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NOTE: The SE Advection error and CLM time-averaging errors are fixed in recent versions of CESM2.2.

CLUBB interface and water vapor

Date of report: June 2024
Title: CLUBB conversion from wet to dry mixing ratios
Issue: CLUBB (Cloud Layers Unified By Binormals) is a sub-gridscale parameterization of clouds and turbulence. It includes a conversion from wet to dry mixing ratios, that was incorrectly set to "double dry", and wet tracers were not converted to dry.
Model tags affected: The issue was committed in tag cam6_3_094 and remained later versions.
Model response: Impacts on stratospheric water vapor and potential influence on the "tape recorder".
Fix: Correct code in clubb_intr.F90.
More information: Issue described here: ESCOMP GitHub issue 1053
Code fix here: AMWG GitHub Issue 545

FHIST and F2000climo compsets not defined properly

Date of report: December 2023
Title: Failure to build FHIST and F2000climo compsets
Issue: For CESM2.2 on Derecho, the default FHIST and F2000climo compsets are not defined properly. 
Fix: Try using: 
--compset HIST_CAM60_CLM50%SP_CICE%PRES_DOCN%DOM_MOSART_SGLC_SWAV_SIAC_SESP

Regridding error

Date of report: November 2023
Title: Regridding code throws an error
Issue: Regridding meteorological data for regional refined simulations intermittently fails throwing an error in the log file. Sometimes the regridding completes, even if the error is noted.IPT NCL regridding code does not recognize ncl
Issue: Casper has problems loading modules within a script (should be fixed by Dec 1), such as https://github.com/NCAR/IPT/blob/master/Meterological_Reanalysis_Data/Spectral_element_dycore/Gen_Data_ne0CONUSne30x8/Gen_MERRA2_ne0CONUSne30x8_mt12.csh
Model tags affected: Pre-simulation input data processing.
Fix: Initial CISL fix required...: within a PBS script use:

source /etc/profile.d/z00_modules.csh 
module load ncl

More information: 

Sometimes the script crashes because it cannot find the log directory. Add the following lines to fix:

if( ! -d $MYLOGDIR ) then
     mkdir $MYLOGDIR
else
     echo "Directory exists"
endif

Topography file error

Date of report: February 2023
Title: Topography file error 2022
Issue: Regional refined topography was in the incorrect location/orientation
Model tags affected: NCAR_Topo_2_0_1 files for regional refinement. An erroneous topography file was specified for use when creating variable resolution grids between April 2022 and Jan 2023. 
Model response: Gravity waves impacted, incorrect transport, chemistry fields displaced
Fix: Reprocess topography and re-run model simulations. If you created your own grid during that period please checkout the updated code at:  https://GitHub.com/NCAR/Topo and recreate your topography file for your grid and re-run any simulations. To check if your topography file has this error, plot ANGLL vs ANGLX.  In a "good" topo-file these variables should have large differences. In a "bad" file they will be very close everywhere.

Also be sure to recreate any regridded met (GEOS or MERRA2) files that used the incorrect topo file.
More information: AMWG Github issue 213

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