Only reset snow north of 45N and between 100W - 0W #3047
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Description of changes
Similar to #3036 , this is a draft that I'm opening to document this change that may be used in a CESM3 test run. This currently hard-codes a region for snow resetting. But, if desired, we could implement namelist variables to give a bounding box for snow resetting - though my feeling is that that probably is not worth doing.
Specific notes
Contributors other than yourself, if any:
CTSM Issues Fixed (include github issue #):
Are answers expected to change (and if so in what way)?
Any User Interface Changes (namelist or namelist defaults changes)?
Does this create a need to change or add documentation? Did you do so?
Testing performed, if any:
SMS_D_Ld3_P8x1.f10_f10_mg37.I2000Clm50BgcCropQianRs.green_gnu.clm-default with reset_snow = .true. and reset_snow_glc = .true.: passes; manual inspection of SNOW_DEPTH suggests this new code is working as intended