[Dart-dev]  DART/trunk/assim_tools/assim_tools_mod.html: New paragraph in the vert_normalization section pointing the way
nancy at ucar.edu
nancy at ucar.edu
Thu Jan 20 15:19:38 MST 2011
Date: 2011-01-20 15:19:38 -0700 (Thu, 20 Jan 2011)
New paragraph in the vert_normalization section pointing the way
to the location_mod documentation for help setting up vertical
localization in the desired units.
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--- DART/trunk/assim_tools/assim_tools_mod.html 2011-01-20 22:18:29 UTC (rev 4660)
+++ DART/trunk/assim_tools/assim_tools_mod.html 2011-01-20 22:19:38 UTC (rev 4661)
@@ -46,6 +46,7 @@
to it at the same time is described in Anderson (2007).
Available observation space filter types include:
@@ -63,9 +64,9 @@
<em>Localization</em> controls how far the impact of an observation extends.
The namelist items related to localization are spread over several
different individual namelists, so we have made a single collected
@@ -143,8 +144,21 @@
cutoff will be a perfect sphere. If you want to localize over a larger
distance in the vertical than horizontal, use a larger value. If you want
to localize more sharply in the vertical, use a smaller number.
+The type of localization used is set by which type of vertical coordinate
+the observations and state vector items have.
+If you have observations with different vertical coordinates (e.g. pressure
+and height), or if your observations have a different vertical coordinate
+than your state vector items, or if you want to localize in a different
+type of unit than your normal vertical coordinate (e.g. your model uses
+pressure in the vertical but you wish to localize in meters), then you
+will need to modify or add a <em class=code>get_close()</em> routine
+in your <em class=file>model_mod.f90</em> file. See the discussion in
+the <a href="../location/threed_sphere/location_mod.html">location module</a>
+documentation for how to transform vertical coordinates before localization.
<em>&assim_tools_nml :: adaptive_localization_threshold<br></em>
valid values: integer counts, or -1 to disable
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