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<p class=MsoNormal>Hi all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We’ve been experimenting with the use of CFSR data to
initialize and force WRF, as opposed to NNRP. In case anyone isn’t
aware of it, CFSR is the Climate Forecast System Reanalysis, while the NNRP is
the older NCEP/NCAR Reanalysis Project. We’re using the 6-hour
forecasts (4x/day), choosing the WRF forcing option at:<o:p></o:p></p>
<p class=MsoNormal> <a
href="http://dss.ucar.edu/datasets/ds093.0/">http://dss.ucar.edu/datasets/ds093.0/</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>First, I was wondering whether anybody has any particular
advice or impressions about using this data. Any tricks or suggestions?
Can I generally just use the same methodologies I’ve been using with NNRP
data?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Second, the CFSR data only goes through 2010, but we need to
have analogous data going forward. I’ve been told that I should use
Climate Forecast System Version 2 (CFSV2) data, available at:<o:p></o:p></p>
<p class=MsoNormal> <a
href="http://rda.ucar.edu/datasets/ds094.0/">http://rda.ucar.edu/datasets/ds094.0/</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The thing is, I’m not sure just how analogous these
two datasets are. It appears to me that while they use the same numerical
model to generate them, the CFSR is a reanalysis product (using maximal data
assimilation), while it _<i>appears</i>_ that the CFSV2 is a forecast product
(with only as much data assimilation as can be done while still generating a
forecast product). Also, it’s not clear to me that both datasets
have “WRF” options at the same resolutions.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>My concern is that between differences in data assimilation
and resolutions between the two datasets, my results from CFSR and CFSV2 won’t
be directly comparable. The goal is to develop climatologies using CFSR results,
and then use current CFSV2 results to determine anomalies.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anybody have thoughts into the potential pitfalls I
mention above, and/or any other issues we might run into?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Mike<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>-- <o:p></o:p></p>
<p class=MsoNormal>Mike Zulauf<o:p></o:p></p>
<p class=MsoNormal>Meteorologist, Lead Senior<o:p></o:p></p>
<p class=MsoNormal>Operational Meteorology <o:p></o:p></p>
<p class=MsoNormal>Iberdrola Renewables<o:p></o:p></p>
<p class=MsoNormal>1125 NW Couch, Suite 700<o:p></o:p></p>
<p class=MsoNormal>Portland, OR 97209<o:p></o:p></p>
<p class=MsoNormal>Office: 503-478-6304 Cell: 503-913-0403<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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