WRFDA reanalyses for analysis nudging?

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bartbrashers
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Joined: Wed Aug 08, 2018 2:21 pm

WRFDA reanalyses for analysis nudging?

Post by bartbrashers » Fri Jun 26, 2020 10:48 pm

This is a very obvious use-case to me, but I can't find any evidence that someone has done this yet.

For hindcasting (simulating the past, for multi-year periods) we often use analysis nudging. For domains with finer grid spacing than the input dataset (which is most domains for me) we objectively re-analyze the met_em files using OBSGRID, which produces metoa_em files. These are then fed to REAL, which produces the desired wrffdda_d0? files.

OBSGRID hasn't been updated in years. WRFDA should do a much better job even using the relatively simple 3DVAR option. Can it be used to provide better wrffdda_d0? files, or even metoa_em-style files?

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