Add NOAA UFS UGWP suite of physics parameterizations #1276
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…tmosphere This commit adds three new source files mpas_gsl_oro_data_sm_scale.F mpas_gsl_oro_data_lg_scale.F mpas_init_atm_gwd_gsl.F to the init_atmosphere core, along with modifications to the main core_init_atmosphere Makefile to compile these source files. At present, none of the code in these files is called from the init_atmosphere core.
…re core
This commit defines new static fields, a new package, a new namelist option, and
a new output stream for the GSL GWDO scheme. Also included in this commit are
changes to the init_atm_setup_packages() routine to set the new
'gwd_gsl_stage_out' package if and only if the new namelist option
'config_native_gwd_gsl_static' is true.
When 'config_native_gwd_gsl_static' is set in the namelist, the init_atmosphere
core will write the twenty new static fields (var2d, con, oa{1,2,3,4}, and
ol{1,2,3,4}) for large scale (ls) and small scale (ss) to a new 'ugwp_oro_data'
output stream.
As of this commit, code to actually compute the twenty new static fields is not
being called, and so the fields are expected to be zero everywhere.
When the namelist option config_native_gwd_gsl_static is .true., the init_atm_setup_case() routine now calls thecalc_gsl_oro_data() routine to compute the twenty GSL GWDO static fields.
This commit adds an entry to the Externals.cfg file to obtain the GSL UGWP code from a GitHub repository. Also included in this commit are changes to the main physics Makefile to compile the UGWP code. At present, none of the UGWP code is called.
Also included in this commit is logic for setting up packages related to the GSL UGWP scheme in the atm_setup_packages() routine.
…emes This commit adds a new module, module_bl_ugwp_gwdo, in the core_atmosphere/physics/physics_wrf directory. This module serves as a wrapper for the UGWP physics that is compatible with the MPAS-A physics drivers. Changes to the Makefile in the physics_wrf directory ensure that the module_bl_ugwp_gwdo.F file is compiled, but at present the code in that module is not actually called.
With this commit, the UGWP physics can now be used in MPAS-A simulations
* Setting the 'config_gwdo_scheme' namelist option to 'bl_ugwp_gwdo' selects the
GSL GWDO scheme.
NOTE: If the GSL GWDO scheme is selected, the 'ugwp_oro_data_in' input stream
must specify a valid input file with UGWP static fields.
* Setting the 'config_ngw_scheme' namelist option to 'true' will activate the
non-stationary gravity wave drag scheme.
NOTE: If the NGW scheme is activated, the 'ugwp_ngw_in' input stream
must specify a valid input file.
* Setting the 'config_ugwp_diags' namelist option to 'true' will compute UGWP
diagnostic fields, which will be written by the 'diag_ugwp' output stream.
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This PR incorporates NOAA's Unified Forecast System (UFS) Unified Gravity Wave Physics (UGWP) suite of physics parameterizations into MPAS: https://ufs.epic.noaa.gov/wp-content/uploads/2021/07/UGWP_in_UFS_July_2021-1.pdf.
NOTE: This physics package is the "NOAA/GSL" orographic gravity wave drag (GWD) suite introduced in WRF Version 4.3 (activated by WRF namelist option "gwd_opt=3"), but with the addition of a non-stationary GWD parameterization that represents gravity wave sources such as deep convection and frontal instability.
Thanks to @mgduda for help and advice on how to incorporate the NOAA/GSL code into the MPAS-Dev repository.