madhavijain
New member
I was using NUDAPT dataset provided on the WPS_GEOG data website for running BEPBEM WRF simulations. I later developed my own set of UCPs required from the explicit building footprints and building heights data we had. I followed some of the older documentations of NUDAPT (https://ral.ucar.edu/sites/default/files/public/product-tool/NUDAPT_44_Documentation.pdf) and AMS presentation of Jason Ching for this. There seems to be some confusion around computation of Distribution of Building Hgts UCP (0-75m)- should it be computed as percentages (range 0-100%) or as fractions (range 0-1), when ingesting in WPS?
When I plot the NUDAPT distribution of building hgts (URB_PARAM Index 118-132) from geo_em.nc or from wrfinput.nc, this specific UCP shows up as a fraction ranging from 0-1. I computed my custom UCPs at a 500m resolution as fractions (Image attached below)
But several new publications suggest that it should be computed as a percentage? A new dataset UT-Globus had computed fractions for the the 15 layers of Dist of Building hgts UCP, but later ask to recompile the WRF, so that this UCP can be read as a percentage. Can anyone please clarify on what is the correct methodology for this particular UCP.
How to run BEP-BEM model in WRF using UT-GLOBUS urban canopy parameters (GLObal Building heights for Urban Studies (UT-GLOBUS))
Step 0: Before compiling WRF, go to 'dyn_em' folder and open 'module_initialize_real.F'.
Change line 3121 (in version 4.5.2):
From
grid%HI_URB2D(i,k,j) = grid%URB_PARAM(i,k+117,j)
To
grid%HI_URB2D(i,k,j) = grid%URB_PARAM(i,k+117,j)*100.
When I plot the NUDAPT distribution of building hgts (URB_PARAM Index 118-132) from geo_em.nc or from wrfinput.nc, this specific UCP shows up as a fraction ranging from 0-1. I computed my custom UCPs at a 500m resolution as fractions (Image attached below)
But several new publications suggest that it should be computed as a percentage? A new dataset UT-Globus had computed fractions for the the 15 layers of Dist of Building hgts UCP, but later ask to recompile the WRF, so that this UCP can be read as a percentage. Can anyone please clarify on what is the correct methodology for this particular UCP.
How to run BEP-BEM model in WRF using UT-GLOBUS urban canopy parameters (GLObal Building heights for Urban Studies (UT-GLOBUS))
Step 0: Before compiling WRF, go to 'dyn_em' folder and open 'module_initialize_real.F'.
Change line 3121 (in version 4.5.2):
From
grid%HI_URB2D(i,k,j) = grid%URB_PARAM(i,k+117,j)
To
grid%HI_URB2D(i,k,j) = grid%URB_PARAM(i,k+117,j)*100.
