Is there a way to directly turn off "urban" ?

[11438023@zju_edu_cn]

Dear all,For some seasons I want to turn off urban type from CLM4_0 (replace urban type grids with bare ground maybe).Before trying modifying files/codes, I would like to ask if there is any way to directly achieve this?  Thanks!Best,
Duan 

 

[oleson]

One way is to create a new surface dataset with urban percentage set to zero.  You could do this by setting urban to zero in the "mksrf_urban" file that is used as input to the surface dataset creation tool.  The code replaces urban fraction preferentially with bare ground.

 

[11438023@zju_edu_cn]

Thanks oleson.I did try this way and the model works good! 

 

[stuecker@uw_edu]

Hi,I am also using CLM4.0 (in CESM1.2.2 with the F2000_CN compset with f09_f09 resolution) and tried setting the PCT_URBAN variable in the surfdata file to zero eveywhere. However now I get an error message stating that the land type percentages don't add up to a 100 at each grid point. What would be the best way to address this and/or is there another way to switch off the urban model? Thanks!

 

[oleson]

As previously posted, you will need to either create a new surface dataset with the mksurfdata tool, or add the pct_urban to the bare soil pft (or other pfts).