<p><b>bray</b> 2007-01-18 16:37:20 -0700 (Thu, 18 Jan 2007)</p><p>Remove duplicate sections of the WG4 website<br>
</p><hr noshade><pre><font color="gray">Modified: trunk/wrfvar/wg4_website/index.html
===================================================================
--- trunk/wrfvar/wg4_website/index.html        2007-01-18 21:20:10 UTC (rev 35)
+++ trunk/wrfvar/wg4_website/index.html        2007-01-18 23:37:20 UTC (rev 36)
@@ -440,7 +440,7 @@
<h3 style="text-align: justify;">2. Links, Documentation</h3>
<ul style="margin-top: 0in;" type="disc">
<li class="MsoNormal" style="text-align: justify;"><a
- href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm">The WRF-Var Homepage
+ href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar/wrfvar.htm">The WRF-Var Homepage
</a> &#8211; Learn about the WRF-Var system
.</li>
<li class="MsoNormal" style="text-align: justify;"><a
Modified: trunk/wrfvar/wg4_website/wrfvar/wrfvar-tutorial.htm
===================================================================
--- trunk/wrfvar/wg4_website/wrfvar/wrfvar-tutorial.htm        2007-01-18 21:20:10 UTC (rev 35)
+++ trunk/wrfvar/wg4_website/wrfvar/wrfvar-tutorial.htm        2007-01-18 23:37:20 UTC (rev 36)
@@ -1 +1 @@
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<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b>The WRF Variational Data
Assimilation System (WRF-Var)</b></span><span style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-ali!
gn:justify'><span lang=EN-US
style='font-size:18.0pt;fon!
t-family
:Arial'><b>1. Introduction</b></span><span
lang=EN-US style='font-family:Arial'><b><o:p></o:p></b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Data assimilation is the technique by which <b>observations</b></span><span
lang=EN-US style='font-family:Arial'> are combined with an NWP product (the <b>first
guess</b></span><span lang=EN-US style='font-family:Arial'> or background
forecast) and their respective error statistics to provide an improved estimate
(the <b>analysis</b></span><span lang=EN-US style='font-family:Arial'>) of the
atmospheric (or oceanic, Jovian, whatever) state. Variational (Var) data
assimilation achieves this through the iterative minimization of a prescribed
cost (or penalty) function. Differences between the analysis and observations/first
guess are pe!
nalized (damped) according to their perceived error. The difference
between three-dimensional (3D-Var) and four-dimensional (4D-Var) data
assimilation is the use of a numerical forecast model in the latter.</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>MMM Division of NCAR supports a unified
(global/regional, multi-model, 3/4D-Var) model-space variational data
assimilation system (WRF-Var) for use by NCAR staff and collaborators, and is
also freely available to the general community, together with further
documentation, test results, plans etc., from the WRF-Var web-page <a
href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm">http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm</a>.
The documentation you are reading is the &quot;Users Guide&quot; for those
interested in downloaded and running the cod!
e. This text also forms the
documentation for the online tutor!
ial. The
online WRF-Var tutorial is
recommended for people who are<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-align:justify;text-indent:
-.25in;mso-list:l2 level1 lfo2;tab-stops:list .75in'><![if !supportLists]><span
lang=EN-US style='font-size:10.0pt;font-family:Symbol'>·<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Potential
users of WRF-Var who want to learn how to run WRF-Var by themselves;<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-align:justify;text-indent:
-.25in;mso-l!
ist:l2 level1 lfo2;tab-stops:list .75in'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;mso-ansi-language:EN-GB'>·<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]><span
lang=EN-US style='font-family:Arial'>New users who plan on coming to the NCAR
WRF-Var tutorial - for you we recommend that you try this tutorial before you
come to NCAR whether you are able or unable to register for practice sessions,
and this will hopefully help you to understand the lectures a lot better;</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;tex!
t-align:justify;text-indent:
-.25in;mso-list:l2 level1 lfo2;ta!
b-stops:
list .75in'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;mso-ansi-language:EN-GB'>·<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]><span
lang=EN-US style='font-family:Arial'>Users who are looking for references to
diagnostics, namelist options etc - look for 'Miscellanies' and 'Trouble
Shooting' sections on each page.</span><span style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>If you are a new WRF-Var user, this tutorial is designed
to take you through WRF-Var-related programs step by step. If you have familiar
with 3/4D-Var systems, you may find useful information here too as the WRF-Var
implementation of 3/4D-Var contains a number of unique capabilities (e.g.
multiple bac!
kground error models, WRF-framework based parallelism/IO, direct
radar reflectivity assimilation). If you don't know anything about 3D-Var, you
should first read the WRF-Var tutorial presentations available from the WRF-Var
web-page <a href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm">http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm</a>.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'><b><u>Goals Of This WRF-Var Tutorial</u></b></span><span
lang=EN-US><u><o:p></o:p></u></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>In this WRF-Var tutorial, you will learn how to run
the various components of the WRF-Var system. In the online tutorial, you are
supplied with a test case including the following input data: a) observation
fil!
e, b) WRF NETCDF background file (previous forecast used as a !
first gu
ess of
the analysis), and c) Background error statistics (climatological estimate of
errors in the background file). In your own work, you will need to create these
two input files yourselves.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>The components of the WRF-Var system are shown in
blue in the sketch below, together with their relationship with rest of the WRF
system.<o:p></o:p></span></p>
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<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Before using your own data, we suggest that you start
by running through the WRF-Var related programs at least once using the
supplied test case. This serves two purposes: First you can learn how to run
the programs with data we have tested ourselves, and second you can test
whether your computer is adequate to run the entire modeling system. After you
have done this tutorial, you can try <o:p></o:p></span></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Running
other, more computationally intensive, case studies.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal st!
yle='margin-left:.25in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Experimenting
with some of the many namelist variables. WARNING: It is impossible to
test every code upgrade with every permutation of computer, compiler,
number of processors, case, namelist option, etc so please modify only
those that are supported. The ones we support are indicated in the default
run script (DA_Run_WRF-Var.csh). Good examples include withholding
observations and tuning background error coefficients.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal style='margin-left:.25in;text-align:justify'><spa!
n
lang=EN-US style='font-family:Arial'><![if !supportEmp!
tyParas]
>&nbsp;<![endif]><o:p></o:p></span></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Running
with your own domain. Hopefully, our test cases will have prepared you
(and us!) for the variety of ways in which you may wish to run WRF-Var.
Please let us know your experiences.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'>As a professional courtesy, we request
that you include the following reference in any publications that make!
s use of
any component of the community WRF-Var system:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial;color:red'>Barker, D. M., W. Huang, Y. R.
Guo, and Q. N. Xiao., 2004: A Three-Dimensional (3DVAR) Data Assimilation
System For Use With MM5: Implementation and Initial Results. <i>Mon. Wea. Rev</i></span><span
lang=EN-US style='font-family:Arial;color:red'>., <b>132</b></span><span
lang=EN-US style='font-family:Arial;color:red'>, 897-914.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>As you!
are going through the online tutorial, you
will download prog!
ram tar
files and data to your local computer, compile and
run on it. Do you know what machine you are going to use to run WRF-Var related
programs? What compilers do you have on the machine?</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Running WRF-Var requires a Fortran 90 compiler. We
currently support the following platforms: <b>IBM</b></span><span lang=EN-US
style='font-family:Arial'>, <b>DEC, SGI</b></span><span lang=EN-US
style='font-family:Arial'>, <b>PC/Linux</b></span><span lang=EN-US
style='font-family:Arial'> (with <a href="http://www.pgroup.com/">Portland
Group</a> compiler), Cray-X1, and Apple G4/G5. Please let us know if this does
not meet your requirements, and we will attempt to add other machines to our
list of supp!
orted architectures as resources allow. Although we're interested
to hear of your experiences modifying compile options, we do not yet recommend
making changes to the configure file used to compile WRF-Var.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'><b><u>Tutorial Schedule<o:p></o:p></u></b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>We recommend you follow the online tutorial in the
order of the sections listed below. This tutorial does not cover parts of the
larger WRF system, required if you wish to go beyond the test case supplied
here, e.g. the WRF <i>Standard Initialization</i></span><span lang=EN-US
style='font-family:Arial'> (SI) and <i>real</i></span><span lang=EN-US
style='font-family:Arial'> pre!
-preprocessors are needed to create your own
background field.!
<o:p&
gt;</o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>The online tutorial is broken down into the following
sections.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>a)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><a
href="wrfvar-download.htm">Download Test Data</a>: This page describes how to
access test datasets to run WRF-Var.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in!
;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>b)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="3dvar_obsproc.htm">The 3D-Var Observation Preprocessor (3DVAR_OBSPROC)</a></u>:
Describes how to create an observation file for subsequent use in WRF-Var, and
plot observation distributions.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&!
amp;nbsp
;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-setup.htm"><span style='color:blue'>Setting up WRF-Var</span></a></u>:
In this part of the tutorial you will download and compile the codes that form the
WRF-Var system (3DVAR_OBSPROC, WRF-Var, WRF_BC).<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>d)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-casestudy.htm"><span styl!
e='color:blue'>Run WRF-Var CONUS Case
Study</span></a></u>: In this section, you will learn how to run WRF-Var for a
test case.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>e)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-diagnostics.htm"><span style='color:blue'>WRF-Var Diagnostics</span></a></u>:
WRF-Var produces a number of diagnostics file that contain useful information
on how the assimilation has performed. This section will introduce you to some
of these f!
iles, and what to look for.<u><o:p></o:p><!
;/u>&
lt;/span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>f)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-wrf_bc.htm">Updating WRF lateral boundary conditions</a>: </u>Before
using the WRF-Var analysis as the initial conditions for a WRF forecast, the
lateral boundary file must be modified to take account of the differences
between first guess and analysis.<o:p></o:p></span></p>
<div class=MsoNormal align=center style='margin-left:.25in;text-align:center'><span
lang=EN-US styl!
e='font-size:10.0pt;font-family:Times;color:windowtext'>
<hr size=2 width="100%" align=center>
</span></div>
<p style='margin-left:.5in'><span lang=EN-US style='font-family:Arial'>Once you
are able to run all these programs successfully, and have spent some time
looking at the variety of diagnostics output that is produced, we hope that
you'll have some confidence in handling the WRF-Var system programs when you
start your cases. Good luck!</span><span lang=EN-US> </span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial;color:#FF6666'>For comments, send email to</spa!
n><span
lang=EN-US style='font-family:Arial;color:#00009!
9'> &
lt;a
href="mailto:wrfhelp@wrf-model.org"><span style='font-family:"Times New Roman"'>wrfhelp@wrf-model.org</span></a></span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial'>Last Modified: January 25 2006</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
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<div class=Section1>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b>The WRF Variational Data
Assimilation System (WRF-Var)</b></span><span style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b>1. !
Introduction</b></span><span
lang=EN-US style='!
font-fam
ily:Arial'><b><o:p></o:p></b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Data assimilation is the technique by which <b>observations</b></span><span
lang=EN-US style='font-family:Arial'> are combined with an NWP product (the <b>first
guess</b></span><span lang=EN-US style='font-family:Arial'> or background
forecast) and their respective error statistics to provide an improved estimate
(the <b>analysis</b></span><span lang=EN-US style='font-family:Arial'>) of the
atmospheric (or oceanic, Jovian, whatever) state. Variational (Var) data
assimilation achieves this through the iterative minimization of a prescribed
cost (or penalty) function. Differences between the analysis and observations/first
guess are penalized (damped) according to their perceived error. The difference
between three-dimensional!
(3D-Var) and four-dimensional (4D-Var) data
assimilation is the use of a numerical forecast model in the latter.</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>MMM Division of NCAR supports a unified
(global/regional, multi-model, 3/4D-Var) model-space variational data
assimilation system (WRF-Var) for use by NCAR staff and collaborators, and is
also freely available to the general community, together with further
documentation, test results, plans etc., from the WRF-Var web-page <a
href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm">http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm</a>.
The documentation you are reading is the &quot;Users Guide&quot; for those
interested in downloaded and running the code. This text also forms the
documentation for the online tutorial. The online WRF-Var tutoria!
l is
recommended for people who are<o:p></o:p><!
/span>
;</p>
<p class=MsoNormal style='margin-left:.75in;text-align:justify;text-indent:
-.25in;mso-list:l2 level1 lfo2;tab-stops:list .75in'><![if !supportLists]><span
lang=EN-US style='font-size:10.0pt;font-family:Symbol'>·<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Potential
users of WRF-Var who want to learn how to run WRF-Var by themselves;<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-align:justify;text-indent:
-.25in;mso-list:l2 level1 lfo2;tab-stops:list .75in'><![if !supportLists]><span
style='font-s!
ize:10.0pt;font-family:Symbol;mso-ansi-language:EN-GB'>·<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]><span
lang=EN-US style='font-family:Arial'>New users who plan on coming to the NCAR
WRF-Var tutorial - for you we recommend that you try this tutorial before you
come to NCAR whether you are able or unable to register for practice sessions,
and this will hopefully help you to understand the lectures a lot better;</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-align:justify;text-indent:
-.25in;mso-list:l2 level1 lfo2;tab-stops:list .75in'><![if!
!supportLists]><span
style='font-size:10.0pt;font-famil!
y:Symbol
;mso-ansi-language:EN-GB'>·<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]><span
lang=EN-US style='font-family:Arial'>Users who are looking for references to
diagnostics, namelist options etc - look for 'Miscellanies' and 'Trouble
Shooting' sections on each page.</span><span style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>If you are a new WRF-Var user, this tutorial is designed
to take you through WRF-Var-related programs step by step. If you have familiar
with 3/4D-Var systems, you may find useful information here too as the WRF-Var
implementation of 3/4D-Var contains a number of unique capabilities (e.g.
multiple background error models, WRF-framework based parallelism/IO, direct
radar reflectivity assimilat!
ion). If you don't know anything about 3D-Var, you
should first read the WRF-Var tutorial presentations available from the WRF-Var
web-page <a href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm">http://www.mmm.ucar.edu/wrf/WG4/wrfvar.htm</a>.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'><b><u>Goals Of This WRF-Var Tutorial</u></b></span><span
lang=EN-US><u><o:p></o:p></u></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>In this WRF-Var tutorial, you will learn how to run
the various components of the WRF-Var system. In the online tutorial, you are
supplied with a test case including the following input data: a) observation
file, b) WRF NETCDF background file (previous forecast used as a first guess of
the analysis), a!
nd c) Background error statistics (climatological estimate of
!
errors i
n the background file). In your own work, you will need to create these
two input files yourselves.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>The components of the WRF-Var system are shown in
blue in the sketch below, together with their relationship with rest of the WRF
system.<o:p></o:p></span></p>
<p style='margin-left:.5in'><span lang=EN-US style='font-family:Arial'><!--[if gte vml 1]><v:shapetype
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src="wrfvar_files/image001.png" v:shapes="_x0000_i1025"!
><![endif]><o:p></o:p></span></p!
>
&l
t;p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Before using your own data, we suggest that you start
by running through the WRF-Var related programs at least once using the
supplied test case. This serves two purposes: First you can learn how to run
the programs with data we have tested ourselves, and second you can test
whether your computer is adequate to run the entire modeling system. After you
have done this tutorial, you can try <o:p></o:p></span></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Running
other, more computationally intensive, case studies.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal style='margin-left:.25in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![i!
f !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Experimenting
with some of the many namelist variables. WARNING: It is impossible to
test every code upgrade with every permutation of computer, compiler,
number of processors, case, namelist option, etc so please modify only
those that are supported. The ones we support are indicated in the default
run script (DA_Run_WRF-Var.csh). Good examples include withholding
observations and tuning background error coefficients.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal style='margin-left:.25in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]>&l!
t;o:p></o:p></span></p>
<ul style='ma!
rgin-top
:0in' type=disc>
<li class=MsoNormal style='text-align:justify;mso-list:l1 level1 lfo5;
tab-stops:list .5in'><span lang=EN-US style='font-family:Arial'>Running
with your own domain. Hopefully, our test cases will have prepared you
(and us!) for the variety of ways in which you may wish to run WRF-Var.
Please let us know your experiences.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'>As a professional courtesy, we request
that you include the following reference in any publications that makes use of
any component of the community WRF-Var system:<o:p></o:p></span></p>
!
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial;color:red'>Barker, D. M., W. Huang, Y. R.
Guo, and Q. N. Xiao., 2004: A Three-Dimensional (3DVAR) Data Assimilation
System For Use With MM5: Implementation and Initial Results. <i>Mon. Wea. Rev</i></span><span
lang=EN-US style='font-family:Arial;color:red'>., <b>132</b></span><span
lang=EN-US style='font-family:Arial;color:red'>, 897-914.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>As you are going through the online tutorial, you
will download program tar files and data to your local com!
puter, compile and
run on it. Do you know what machine you are!
going t
o use to run WRF-Var related
programs? What compilers do you have on the machine?</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>Running WRF-Var requires a Fortran 90 compiler. We
currently support the following platforms: <b>IBM</b></span><span lang=EN-US
style='font-family:Arial'>, <b>DEC, SGI</b></span><span lang=EN-US
style='font-family:Arial'>, <b>PC/Linux</b></span><span lang=EN-US
style='font-family:Arial'> (with <a href="http://www.pgroup.com/">Portland
Group</a> compiler), Cray-X1, and Apple G4/G5. Please let us know if this does
not meet your requirements, and we will attempt to add other machines to our
list of supported architectures as resources allow. Although we're interested
to hear of your experiences modifyin!
g compile options, we do not yet recommend
making changes to the configure file used to compile WRF-Var.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'><b><u>Tutorial Schedule<o:p></o:p></u></b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>We recommend you follow the online tutorial in the
order of the sections listed below. This tutorial does not cover parts of the
larger WRF system, required if you wish to go beyond the test case supplied
here, e.g. the WRF <i>Standard Initialization</i></span><span lang=EN-US
style='font-family:Arial'> (SI) and <i>real</i></span><span lang=EN-US
style='font-family:Arial'> pre-preprocessors are needed to create your own
background field.<o:p></o:p></span><!
/p>
<p style='margin-left:.5in;text-align:justify'>&!
lt;span
lang=EN-US
style='font-family:Arial'>The online tutorial is broken down into the following
sections.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>a)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><a
href="wrfvar-download.htm">Download Test Data</a>: This page describes how to
access test datasets to run WRF-Var.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US styl!
e='font-family:
Arial;color:#0000EE'>b)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="3dvar_obsproc.htm">The 3D-Var Observation Preprocessor (3DVAR_OBSPROC)</a></u>:
Describes how to create an observation file for subsequent use in WRF-Var, and
plot observation distributions.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>c)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
!
</span></span><![endif]><span lang=EN-US !
style='f
ont-family:Arial'><u><a
href="wrfvar-setup.htm"><span style='color:blue'>Setting up WRF-Var</span></a></u>:
In this part of the tutorial you will download and compile the codes that form the
WRF-Var system (3DVAR_OBSPROC, WRF-Var, WRF_BC).<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>d)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-casestudy.htm"><span style='color:blue'>Run WRF-Var CONUS Case
Study</span></a></u>: In this section, you !
will learn how to run WRF-Var for a
test case.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify;text-indent:-.25in;mso-list:l0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>e)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-diagnostics.htm"><span style='color:blue'>WRF-Var Diagnostics</span></a></u>:
WRF-Var produces a number of diagnostics file that contain useful information
on how the assimilation has performed. This section will introduce you to some
of these files, and what to look for.<u><o:p></o:p></u></span></p>
<p st!
yle='margin-left:.5in;text-align:justify;text-indent:-.25in;ms!
o-list:l
0 level1 lfo9;
tab-stops:list .75in'><![if !supportLists]><span lang=EN-US style='font-family:
Arial;color:#0000EE'>f)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'><u><a
href="wrfvar-wrf_bc.htm">Updating WRF lateral boundary conditions</a>: </u>Before
using the WRF-Var analysis as the initial conditions for a WRF forecast, the
lateral boundary file must be modified to take account of the differences
between first guess and analysis.<o:p></o:p></span></p>
<div class=MsoNormal align=center style='margin-left:.25in;text-align:center'><span
lang=EN-US style='font-size:10.0pt;font-family:Times;color:windowtext'>
<hr size=2 width="100%" alig!
n=center>
</span></div>
<p style='margin-left:.5in'><span lang=EN-US style='font-family:Arial'>Once you
are able to run all these programs successfully, and have spent some time
looking at the variety of diagnostics output that is produced, we hope that
you'll have some confidence in handling the WRF-Var system programs when you
start your cases. Good luck!</span><span lang=EN-US> </span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial;color:#FF6666'>For comments, send email to</span><span
lang=EN-US style='font-family:Arial;color:#000099'> <a
href="mailto:wrfhelp@w!
rf-model.org"><span style='font-family:"Times !
New Roma
n"'>wrfhelp@wrf-model.org</span></a></span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial'>Last Modified: January 25 2006</span><span
style='mso-ansi-language:EN-GB'><o:p></o:p></span></p>
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<div class=Section1>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b>The WRF Variational Data
Assimilation System (WRF-Var)</b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
s!
tyle='font-size:18.0pt;font-family:Arial'><b>1. Introduction</b></span><span
lang=EN-US style='font-family:Arial'><b><o:p></o:p></b></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>MMM Division of NCAR supports a unified
(global/regional, multi-model, 3/4D-Var) model-space variational data
assimilation system (WRF-Var) for use by NCAR staff and collaborators, and is
also freely available to the general community, together with further
documentation, test results, plans etc., from the links below.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>The components of the WRF-Var system are shown in
blue in the sketch below, together with their relationship with rest of the WRF
system.<o:p></o:p></span></p>
<p style='margin-lef!
t:.5in'><span lang=EN-US style='font-family:Arial'>&l!
t;!--[if
gte vml 1]><v:shapetype
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height:297pt'>
<v:imagedata src="wrfvar_files/image001.png" o:title="Slide0021.gif"/>
</v:shape><![endif]--><![if !vml]><img width=396 height=297
src="wrfvar_files/image002.png" v:shapes="_x0000_i1025"><![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'>As a professional courtesy, we request
that you include the following reference in any publications t!
hat makes use of
any component of the community WRF-Var system!
:<o:p
></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify'><span
lang=EN-US style='font-family:Arial;color:red'>Barker, D. M., W. Huang, Y. R.
Guo, and Q. N. Xiao., 2004: A Three-Dimensional (3DVAR) Data Assimilation
System For Use With MM5: Implementation and Initial Results. <i>Mon. Wea. Rev</i></span><span
lang=EN-US style='font-family:Arial;color:red'>., <b>132</b></span><span
lang=EN-US style='font-family:Arial;color:red'>, 897-914.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b>2. Background<o:p></o:p></b&!
gt;</span></p>
<p class=MsoNormal style='text-align:justify;mso-pagination:none;tab-stops:
28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>The WRF-Var system has been developed in four major
stages.&nbsp;<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt!
336.0pt;
mso-layout-grid-align:none;text-autospace:none'>&!
lt;span
lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>a) The basic system (June 2003)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
n!
one;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>The basic system contained the necessary
infrastructure, but not all the complexities (e.g. radiance assimilation,
anisotropic recursive filters) of subsequent research and advanced
versions.&nbsp; The characteristics of the basic WRF 3D-Var system were:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.!
0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2!
level1
lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>i.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Incremental
formulation.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list!
:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>ii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>MPI ready.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagin!
ation:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left!
16.0pt
list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>iii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Flexible
observational F90 structures.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;ms!
o-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>iv.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Weak balance
constraint through the choice of analysis variables.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text!
-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;!
mso-pagi
nation:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>v.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Unstaggered
grid.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-!
.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>vi.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Model space
solution.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;t!
ext-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:n!
one;mso-
list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>vii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>3D-
isotropic but inhomogeneous background error covariance matrix generated
through the use of recursive filters<o:p></o:p></span></p&!
gt;
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>viii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Ar!
ial'>Observation
operators and covariances will assume unco!
rrelated
observational errors.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>ix.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span !
lang=EN-US style='font-family:Arial'>Platform
specific quality control to be performed prior to analysis (WG12).&nbsp;
Multi-platform quality control to be performed within analysis system.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>x.<span style='font:7.0pt "Time!
s New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;!
&nbs
p;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Primary input
data to be in BUFR format.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>xi.<span style='font:7.0pt "Times New Roman&!
quot;'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Comprehensive
performance diagnostics.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l2 level1 lfo7;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp!
;
</span>xii.<span style='font:7.0pt "Times New !
Roman&qu
ot;'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Code
management using CVS.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;text-indent:-16.0pt;
mso-pagination:none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:
none;text-autospace:none'><span lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>b) Upgraded basic version (WRF 3DVAR V2.0)<o:p></o:p></span></p>
<p clas!
s=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>This version was released in May 2004 as part of the
WRFV2.0 package. It incorporated the following additional capabilities:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196!
.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-al!
ign:none
;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>i.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&am!
p;nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Re-ordering
of grid-points to i=x and k=1 at bottom (and removal of MM5 I/O).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>ii.<span style='font:7.0pt!
"Times New Roman"'>&nbsp;&nbsp;&nbsp!
;&nb
sp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Variational
quality control via inner/outer loop structure.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>iii.<span style='fo!
nt:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Assimilation
of radar radial velocities.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n!
bsp;&nbsp;&nbsp;
</span>iv.<span style='font:!
7.0pt &q
uot;Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Improved
minimization flexibility (option for conjugate gradient for linear inner-loop).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;!
&nbsp;&nbsp;&nbsp;&nbsp;
</span>v.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Sophisticated
surface observation operators (uses PBL physics).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l8 level1 lfo8;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp!
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&!
amp;nbsp
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>vi.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Changes to
permit WRF 3D-Var to be cycled with WRF.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layou!
t-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>c) Research version (WRF-Var V2.1)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>This version was released in August 2005 as part of
the WRFV2.1 package. It incorporates the following additional capabilities:<o:!
p></o:p></span></p>
<p class=MsoNorma!
l style=
'margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l5 level1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none!
;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>i.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>First-guess
at analysis time (FGAT) - to make better use of asynoptic observations in
3DVAR.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l5 leve!
l1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layo!
ut-grid-
align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>ii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Radar
reflectivity assimilation capability (already in pre-operational trials in
Korea).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagina!
tion:none;mso-list:l5 level1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>iii.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Prototype
global 3D-Var capability.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.0in;text-align:justify;te!
xt-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:no!
ne;mso-l
ist:l5 level1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>iv.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>A utility
(gen_be) to enable users to calculate estimates of background errors for their
own domains.<o:p></o:p></span></p>
<p class=MsoNorm!
al style='margin-left:1.0in;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l5 level1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>v.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Porting to
Cray-X1 and Apple G4/G5 platforms.<o:p></o:p>&!
lt;/span></p>
<p class=MsoNormal style='margin-le!
ft:1.0in
;text-align:justify;text-indent:
-1.0in;mso-text-indent-alt:-.25in;mso-pagination:none;mso-list:l5 level1 lfo9;
tab-stops:right 5.3pt left 16.0pt list 1.0in;mso-layout-grid-align:none;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-family:
Arial'><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>vi.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span lang=EN-US style='font-family:Arial'>Unification
of 3D-Var and WRF in the V2.1 framework. This is in preparation !
for the 4D-Var
capability of WRF-Var that is under development.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>c) Advanced Version (2006)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.!
0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.!
0pt;
mso
-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>The advanced version will incorporate new
developments from the WRF team to create an improved 3/4D-Var system.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![end!
if]><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-size:18.0pt'><b>3. Process for inclusion of new capabilities in the
WRF-Var repository<o:p></o:p></b></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></b></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style=!
'font-family:Arial'>The development of WRF-Var is a joint e!
ffort ac
ross a
number of international organizations. To avoid duplication of work, and to
coordinate multiple code changes, the following procedure has been adopted:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span
style="mso-spacerun: yes">&!
amp;nbsp; </span>Change proposed with draft of methodology
and impact in initial tests (if any).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span
style="mso-spacerun: yes">&nbsp; </span>If approved for potential inclus!
ion,
reviewer assigned and schedule for development decided.&l!
t;o:p>
;</o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span
style="mso-spacerun: yes">&nbsp; </span>Contributed code tested in repository
system (including standard tests and additional tests which show the new
capability in action).<o:p>&!
lt;/o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span
style="mso-spacerun: yes">&nbsp; </span>Developer/reviewer present results to
working group.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;!
text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0p!
t 84.0pt
112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span
style="mso-spacerun: yes">&nbsp; </span>When approved, change is added to
repository (including change file describing code changes and impacts).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0!
pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-size:18.0pt'><b>4. </b></span><span lang=EN-US style='font-size:
18.0pt;font-family:Arial'><b>Summary of current status of development efforts<o:p></o:p></b></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-size:18.0pt;font-family:Arial'><b><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></b></span><!
/p>
<p class=MsoNormal style='margin-left:.5in;text-ali!
gn:justi
fy;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>Version 2.1 of WRF-Var was released in August 2005.
This version is intended for use by knowledgeable, friendly users.&nbsp; While
the release has no known errors, it is known that deficiencies exist e.g.
radiance assimilation is not yet included, and background errors are currently
only climatological estimates.&nbsp; The developers would appreciate
notification of any problems with the WRF-Var code, but cannot promise prompt
response or solution to the problems.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'>!
<span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>See the WRF <a
href="http://www.mmm.ucar.edu/wrf/users/download/get_source.html"><span
style='color:blue;text-decoration:none;text-underline:none'>download page</span></a>
for details on how to access the WRF-Var system. We recommend that you follow
the <a href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar/wrfvar-tutorial.htm"><span
style='color:blue;text-decoration:none;text-underline:none'>WRF-Var Tutorial</span></a>
to understand what WRF-Var is doing!<o:p></o:p>&!
lt;/span></p>
<p class=MsoNormal style='margin-le!
ft:.5in;
text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none'><span lang=EN-US
style='font-family:Arial'>Work is now focusing on the research version of
3/4D-Var described above.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-size:18.0pt'><b>5. Links, Documentation<o:p></o:p></b></span></p>
<p class=MsoNormal style='margin-left:!
.5in;text-align:justify;mso-pagination:
none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:none;text-autospace:
none'><span lang=EN-US style='font-family:Arial'>a) <a
href="http://www.mmm.ucar.edu/wrf/WG4/wrfvar/wrfvar-tutorial.htm"><span
style='color:blue;text-decoration:none;text-underline:none'>WRF-Var Tutorial</span></a>
- an introduction to running WRF-Var.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:none;text-autospace:
none'><span lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:none;text-autospace:
none'><span lang=EN-US styl!
e='font-family:Arial'>b) <a
href="http://www.mmm.uc!
ar.edu/w
rf/users/docs/arw_v2.pdf"><span
style='color:blue;text-decoration:none;text-underline:none'>Advanced Research
WRF (ARW) Technical Note</span></a> - see chapter 9 for WRF-Var (pdf).<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:none;text-autospace:
none'><span lang=EN-US style='font-family:Arial'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;text-align:justify;mso-pagination:
none;tab-stops:right 5.3pt left 16.0pt;mso-layout-grid-align:none;text-autospace:
none'><span lang=EN-US style='font-family:Arial'>c) <a
href="http://www.mmm.ucar.edu/wrf/users/docs/user_guide/contents.html"><span
style='color:blue;text-decoration:none;text-underline:none'>WRF User Guide</spa!
n></a>
- see Chapter 6 for a description of WRF-Var.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-align:justify'><span lang=EN-US
style='font-family:Arial'>d) <a href="http://www.mmm.ucar.edu/3dvar"><span
style='color:blue;text-decoration:none;text-underline:none'>MM5 3DVAR Homepage</span></a>
- useful for download, general documentation related to the MM5 version of WRF
3DVAR.</span></p>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial;color:#FF6666'>For comments, send email to</span><span
lang=EN-US style='font-family:Arial;color:#000099'> <a
href="mailto:wrfhelp@wrf-model.org"><span style=!
'font-family:"Times New Roman"'>wrfhelp@wrf-model!
.org<
/span></a></span></p>
<p align=center style='margin-left:.5in;text-align:center'><span lang=EN-US
style='font-family:Arial'>Last Modified: August 4 2005</span></p>
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