cesm2.1.2

Dear Team, I am running fully-coupled CESM2.1.2 simulations with CLM 5.0 (and BGC-Crop) under an SSP scenario. In my simulations, I am adding tree cover and thus removing shrub/grass/crop to make space for the trees. I ran the first two years of simulations for the baseline (fixed tree cover...

Dear Team, I am trying to add some forest cover and remove some shrub and grass cover in CLM5.0 in CESM2.1.2. Since I could not find it in the technical note for CLM, I wanted to ask here what the albedo and snow-masking properties of the shrub and grass PFTs are and how they differ. Thanks...

Dear Team, I want to run CESM2.1.2 (with CLM5.0) with additional forest cover in some regions. My aim is to use the forest cover of 2015 as a baseline and then afforest transiently until the end of 2100 under an SSP forcing. While I understand how I can adjust the PCT_CROP, PCT_NATVEG and...

Dear Team, I am using CLM5.0 with CESM2.1.2 and want to change a surfdata file to add additional tree cover. Thus, I wrote a python script where I am changing the PCT_CROP, PCT_NATVEG and PCT_NAT_PFT variables in the file surfdata_0.9x1.25_hist_78pfts_CMIP6_simyr2014_c200512.nc. However, I saw...

Hello team, I am using CESM2.1.2 but with corrected SOAG input data (e.g. for BC, DMS, SO2) for BSSP245cmip6, BSSP360cmip6 and BSSP585cmip6, with the new files being called e.g...

Dear fellow data processors, I've been running into an issue with calculating zonal mean heat convergence in the ocean in some custom simulations I've run. Apparently, this was calculated for different FAFMIP and OMIP models as...

Hi, I really don't know where I have a problem here, I just want to run an I2000CLM50CN model, so just do some basic Settings. ./xmlchange STOP_OPTION=nyears,STOP_N=170,NTASKS=164 ./case.setup ./case.build ./case.submit However, I never see the growth of vegetation. In the result, TOTSOMC only...

Hello, I'm a new user and want to use the output of the CESM with the CLM5. I just have a simple question about the variable 'BTRAN2', which is the root zone soil wetness factor. I just want to confirm the depth of the root zone in the CESM is 0-0.5m(as written in Lawrence et al. 2019 or...

Hi, I want to add a section for soil decomposition, to determine how much carbon is decomposed due to the fire area, I made all the changes but it reported an error. do fc = 1,num_soilc c = filter_soilc(fc) f = farea_burned(c) i_s4s1 = 10...

Hi, CESM community, I just want to be clear about the model output so as to clearly interpret my model results. I have "OC", and "SOA" in my model output. Are these OC and SOA completely isolated? OC refers to primary organic aerosol (POA), and SOA refers to Secondary organic aerosol. This is...

I have been conducting a 150-year emission-driven simulation using CESM2. Unfortunately, I lost several decades' worth of data from the early period. I attempted to restore the data by using the original bld file and re-running the model, which led to the reproduction of the same output. I am...

I ran a 60 member ensemble spin-up using CESM w/ CLM release-cesm2.2.01 for the land component using the I2000Clm50BgcCrop compset and CAM4 atmospheric forcing's and the same was run using CTSM w/ CLM release-clm5.0.35. All of the following settings were the same between the two: Number of...

I am getting error during building of CESM 2.1.3. Error is coming from MCT. I am attaching the build log file for reference. Please help me in this regard.

Hi, I am using CESM2.1.3 FMOZ compset. I tried turning on fire (./xmlchange --append CLM_BLDNML_OPTS=" -fire_emis"), but it always ended with an error message within a minute of job run. ERROR: fire_emissions_init: not able to map bc_a1 to chem species/forcing I have also posted this in another...

Dear all, I am trying to run a "F2000climo" compset using CESM2.1.3 and I want to replace the climatology SST and sea-ice with other data. Also I want to force the atmospheric component with SST & sea-ice in different year. Now, I have successfully modified the input data. I have changed the...

Dear Sir/Madam, Hello! I am trying to use the PORT (Parallel Offline Radiative Transfer model) aiming to get the radiative forcing, following the instructions from Example: Using PORT to study flux differences due to 2 x CO2. I successfully passed the ./case.setup and ./case.build (with the...

Dear Sir/Madam, Hello! I am trying to use the PORT (Parallel Offline Radiative Transfer model) aiming to get the radiative forcing, following the instructions from Example: Using PORT to study flux differences due to 2 x CO2 At the first step, "Sample the base run", when running the...

Hi community, we are using CESM2.1.2 and CAM6 to produce 3 hourly output. Everything looks reasonable except Shortwave downward flux FDS and Shortwave clear-sky downward flux FDSC which are both zero at all timesteps and all locations. I am very new to the model but the run was started by...