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update the mpas_2024052700 case to use the mpasout files #160

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guoqing-noaa opened this issue Sep 10, 2024 · 9 comments
Open

update the mpas_2024052700 case to use the mpasout files #160

guoqing-noaa opened this issue Sep 10, 2024 · 9 comments
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@guoqing-noaa
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@chunhuazhou has generated background and 30 member mpasout files which include u, uReconstructZonal, uReconstructMeridional variables.

A PR will be created soon to update the mpas_2024052700 case to use these mapsout files.

Hope this helps the further investigation of issue #148

@guoqing-noaa
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guoqing-noaa commented Sep 10, 2024

For reference, this is the ensemble spread at level=23:
image

@guoqing-noaa
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guoqing-noaa commented Sep 10, 2024

Here are the analysis increments from a single observation test:
image

@guoqing-noaa
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guoqing-noaa commented Sep 10, 2024

Here are the analysis increment from the bumploc files generated from the mpasout files:
The max value is changed from 1.68 to 1.64 and there are small pattern changes as well when you zoom in.

image

@guoqing-noaa
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@SamuelDegelia-NOAA @TingLei-NOAA If you want to take a close examination of the two sets of bumploc files, they are at:
/mnt/lfs5/BMC/wrfruc/gge/RDASApp/expr/mpas_2024052700/data/bumploc

Thanks!

@chunhuazhou
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@guoqing-noaa The small difference might be from the model change to tag v8.2.1, which I used for the mpasout/mpasin testing previously.

@guoqing-noaa
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@guoqing-noaa The small difference might be from the model change to tag v8.2.1, which I used for the mpasout/mpasin testing previously.

The differenences between the above two analysis increment fields only come from using different bumploc files (the bkg and ensembles are the same)
@TingLei-NOAA @SamuelDegelia-NOAA Does the bump localization depend on the model meteorological fields? Correct me if I am wrong, but I had an impression that they are invariant with changed meteorological fields.

@SamuelDegelia-NOAA
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@TingLei-NOAA @SamuelDegelia-NOAA Does the bump localization depend on the model meteorological fields? Correct me if I am wrong, but I had an impression that they are invariant with changed meteorological fields.

@guoqing-noaa Correct, the bump localization files should not depend on the meteorological fields. I just confirmed by running bump using different ensemble members as the background, and the bumploc files were the same each time.

@guoqing-noaa
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Link issue #89 where we have spread and increments plots using the restart files

@delippi
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delippi commented Sep 16, 2024

I also noticed some strange things happening in the southern part of the domain. Here is the ensemble spread but with the colorbar zoomed in near zero. You can see a similar pattern in @guoqing-noaa's first plot as well. I believe this might be why I was having trouble assimilating obs over that region. I just use the offline domain check to remove obs in that location for now.

Edit: @SamuelDegelia-NOAA @ShunLiu-NOAA, I zoomed out to plot the edges better. I think this might just be an issue with map projection? I think the edges (east, west, and south) are supposed to be concave? I've tried some other projection options and haven't got things to plot nicely yet.

spread_airTemperature

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