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Stochastic MP and cloud perturbations #553

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merged 24 commits into from
Mar 19, 2021
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This PR references ufs-weather-model issue ufs-community/ufs-weather-model#371
Updates include cloud fraction perturbations, currently only available with RRTMG radiation, stochastic perturbations to all microphysics tracers, not just specific humidity, and option to turn off radiative heating perturbations for SPPT.

All of these are controlled with namelist options, and the default is the all new features are off.

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! perturb cld cover
if (pert_clds) then
do i=1,im
tmp_wt= -1*log( ( 2.0 / ( sppt_wts(i,38) ) ) - 1 )
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Will the hard-coded '38' index cause any future problems?

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It may in the future, but for L64 and L127 this works.

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Looks OK to me. Approved.

@climbfuji climbfuji merged commit 0f9b52d into NCAR:master Mar 19, 2021
HelinWei-NOAA pushed a commit to HelinWei-NOAA/ccpp-physics that referenced this pull request Feb 26, 2023
* ccpp physics: Fix RAP (Grell Freitas) decomp b4b issues; moninshoc.meta missing mfpbl.f dependency
* dycore: Fixes failure of decomposition test for regional case with nrows_blend > 0. Also fixes a bug where nrows_blend=1 caused a crash.

Co-authored-by: Dom Heinzeller <dom.heinzeller@icloud.com>
Co-authored-by: Jun.Wang <Jun.Wang@noaa.gov>
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4 participants