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GEOS-ESM / GEOSana_GridComp

Repository containing code for data analysis for the GEOS Earth System Model data assimilation
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Update gmao_global_tlapmean.txt #78

Closed gmao-msienkie closed 2 years ago

gmao-msienkie commented 2 years ago

Modify tlapmean values for IASI MetOp-C to match those being used in the x-experiments and in FPP. Previously had fitted tlapmean values but the experiments were using tlapmean values copied from those used for MetOp-A and MetOp-B.

gmao-msienkie commented 2 years ago

I was creating a "master" radiance bias coefficient restart file and noticed that the 'tlapmean' values in the table differed from those that we were using in the x-experiment runs and in FPP. I had previously added mean lapse rate values that I had fitted for MetOp-C IASI but the experiments used a the lapse rate mean values copied from the original MetOp-A values. (Those were also used for MetOp-B IASI.) These values are a little off from the ones I fitted but that was mostly in the mid-wave channels that we are not assimilating.

We should have consistent values in the gmao_global_tlapmean.txt file and in the bias correction files in the assimilation experiments we run, otherwise it leads to confusion. So we should change to the values used in the x-experiments. If it appears that there is any problem with the values, they can be adjusted later.

gmao-msienkie commented 2 years ago

f5293_fp pyradmon showed the following assimilated channels where the absolute value of the mean of the lapse-rate-mean term exceeded 0.1K Ch 70 (22) -0.118 Ch 72 (23) -0.128 Ch 83 (30) -0.1 Ch 282 (118) -0.126 Ch 294 (120) -0.1 Ch 306 (125) -0.206 Ch 323 (129) -0.148 Ch 329 (132) -0.172 Ch 335 (134) -0.175 Ch 347 (136) -0.181 Ch 354 (138) -0.177 Ch 360 (140) -0.165 Ch 366 (142) -0.143 Ch 371 (143) -0.1 Ch 373 (145) -0.117 Ch 379 (148) -0.118 Ch 386 (151) -0.126 Ch 389 (152) -0.156 Ch 1579 (254) 0.103 Ch 1643 (261) 0.168

gmao-msienkie commented 2 years ago

Labeled as 'zero-diff' since we are changing the table to match the values used in the assimilation tests - the current table values have not been used in any runs.