clm

Hi,all! my CESM version is 2.1.3.I wonder if CESM can have SSP scenarios that can be run with few landuse PFTs? The current SSP scenarios have a lot of land use categories set up, with 78 for CROP. Are there any SSP scenarios that can be run where the land types are not as detailed? (For...

Hi,all! I would like to know how to separate biogeological and biochemical effects by setting up the CESM components? I guess it is to turn off the cycling of the carbon and nitrogen pools in the CLM, does this mean I need to use CLM50%BGC (turn on the carbon and nitrogen pools) and CLM50%SP...

Hi,all! We have focused on the output of the GCAM model under future scenarios, but the land use types output in GCAM are mostly aggregated. For example, in CLM vegetation is classified into a total of 16 categories, but in the GCAM outputforest is only distinguished into 5 categories(AR6...

What version of the code are you using? CESM1.2, CLM4.5 Have you made any changes to files in the source tree? Overwrite the error checks in clm_varctl.F90 and surfrdMod.F90 that arise due to the combined use of crop_prog and fpftdyn. Describe every step you took leading up to the problem: I...

While running the clm5.0.35. The model setup and built has been successful. When I submit the case, it shows: PNETCDF not enabled in the build, The case compset is I2000Clm50FatesGs.

Hi all, I want to run two B1850 time series experiments use CESM 2.1.4, and I also changed the surface data in one of them, but it doesn't work (i.e., it outputs the same result as the CTR simulation). I ran two B1850 time series simulations: Control simulation: echo "flanduse_timeseries =...

Hi, I've recently been exploring land-atmosphere interactions and would like to run the 2019 simulation with a more accurate land surface initial field. In the input data, the land surface initial field for the most recent year is clmi.BHIST.2010-01-01.0.9x1.25_gx1v7_simyr2010_c181015.nc. I'd...

Hi, When I use cesm2_3_beta17, I can choose CLM5.0, CLM5.1, or CLM6.0 for the land component. I’m wondering where to see their code difference, is it in the my_cesm_sandbox/components/clm/src directory or other places? Best, Zehui

Hi, all I calculated the gap=ET/28.36-(qsoil+qve+qvt)*24*60*60 (unit: mm/d). But I have find most of the value of gap larger than 0 in vegetation regions. So, which method is accurate to get the ET from CLM, use the ET/28.36 or (qsoil+qve+qvt) ? Best Ru

I'm having some issues downloading input data. I am following this page to do a single point clm 5 run on cesm 2.1.5. I know support for specifying PTS_LAT/PTS_LON in create_newcase was dropped from cime at some point, but I can just change it after the case is created. # create the test...

Hi, I recently tried to run cesm2_3_alpha17c/cesm2_3_alpha17d on a school server (Svante in MIT) and ran into the following problem: 1) I can't run FCnudge's f05_f05_mg17 grid resolution properly in CESM2.3, but it works fine in CESM2.2 version.CESM2.3 reports the following error after...

Hi, I recently tried to run cesm2_3_alpha17c/cesm2_3_alpha17d on a school server (Svante in MIT) and ran into the following problem: 1) I can't run FCnudge's f05_f05_mg17 grid resolution properly in CESM2.3, but it works fine in CESM2.2 version.CESM2.3 reports the following error after...

Hi everyone, I'm using CESM2.3.alpha17, and I've encountered some missing data while running certain cases. Specifically, I'm looking for the files "surfdata_1.9x2.5_hist_78pfts_CMIP6_1850_c230517.nc" and "surfdata_0.9x1.25_hist_78pfts_CMIP6_2000_c230517.nc". If anyone could share these files...

I'm trying to run the CLM model with the compset I2000Clm50BgcCropGs --res f05_g17 (50km), but it gives the following error: I have turned off the crop model in user_nl_clm: use_crop = .false. irrigate = .false. fsurdat =...

Good day! I wanted to ask some clarifications on the CLM gridcell level outputs. I am currently running CLM4.5 coupled with a RegCM model, and I have two experiments, one using the default vegetation cover and the other being the updated 2020 cover with evident deforestation in large areas. Upon...

I would like to turn off the crop model option within the compset: I2000Clm50BgcCropGs with res f19_g16 (200km), so I did add the followings in the namelists user_nl_clm and lnd_in: use_crop = .false. AND irrigate = .false. The model run gives the following error: ERROR: Command...

I've compiled the CLM model at --res f05_g17 (50km) with --compset IHistClm50BgcCropGs. However, model run gives the following error: #### error ##### Attempting to read crop dynamic landuse data ..... (GETFIL): attempting to find local file...

Dear all, My research focuses on the climate response to land use, so I mainly modify the surface energy balance in the CLM module and view the output files from the CAM module. However, I forgot to reflect the changes in albedo in the variables ALBD and ALBI which will export to CAM. And I...

Hi, all I run a ssp simulation following the steps in forum, after build , i get the datm.streams.txt.Anomaly.Forcing* files, then i manually revised the content of datm.streams.txt.Anomaly.Fo* as follow: </variableNames> <filePath>...

Hi, all, I try to make a ssp (e.g. ssp370) simulation (2016-2060) with the anomaly_forcing setting, but the anomaly_forcing folder in ftp://ftp.cgd.ucar.edu/pub/oleson/anomaly_forcing seems not existed? Besides, i want to clarify the process of how to use anomaly_foricng setting (I use mct...