Hi,
I am using WRFv4.1, sf_surface_physics=2 (unified Noah Land surface model), and sst_update =1. I would like to change the dominant land use category for a region. I could change LU_INDEX and LANDUSEF in geo_em.d0x.nc, but I do not know how to modify GREENFRAC accordingly.
My questions are:
1. How will GREENFRAC be processed in later modeling processes, in metgrid, real.exe and wrf.exe? What output variables will be influenced?
2. Should I modify other variables in geo_em.d0x.nc: ALBEDO12M, LAI12M, and URB_PARAM etc.?
3. For a certain land use category, are there reference values for GREENFRAC? How should I modify GREENFRAC according to landuse changes?
Thanks for your help!
Siyu
I am using WRFv4.1, sf_surface_physics=2 (unified Noah Land surface model), and sst_update =1. I would like to change the dominant land use category for a region. I could change LU_INDEX and LANDUSEF in geo_em.d0x.nc, but I do not know how to modify GREENFRAC accordingly.
My questions are:
1. How will GREENFRAC be processed in later modeling processes, in metgrid, real.exe and wrf.exe? What output variables will be influenced?
2. Should I modify other variables in geo_em.d0x.nc: ALBEDO12M, LAI12M, and URB_PARAM etc.?
3. For a certain land use category, are there reference values for GREENFRAC? How should I modify GREENFRAC according to landuse changes?
Thanks for your help!
Siyu