clm5

Hi, I designed a experiment (startup run, F2000climo in CESM2) in which the soil moisture is prescribed with a given soil moisture climatology file. To reach this purpose, I set use_soil_moisture_streams = .true. in user_nl_clm. I also set stream_fldfilename_soilm =...

Hi, SOILLIQ and H2OSOI both reprsent the soil moisture. I would like to convert SOILLIQ (kg/m^2) to H2OSOI (m^3/m^3), which have different units. But I have no idea how to do. I am looking forward to any suggestions. Thanks in advance. Best, Kaiwen

Hello CLM community, I’m curious whether the I2000 compsets (such as I2000Clm50BgcCropGs and I2000Clm50Sp) average atmospheric/climate conditions over multiple years, -or if they rely on climate data specific to the year 2000. We need to evaluate the model outputs against ERA5-Land data, so...

Hi, I am trying to replace the soil moisture data with a soil moisture data climatology file in the fully coupled CESM1 or CESM2 (CESM1 is better) only when the model is calculating the heat flux (i.e., latent and sensible heat flux), and maintain the coupling state between the land and the...

Hi all, I'm seeing some odd behaviour using anomaly forcing with CLM5. I'm trying to run the compset ISSP245Clm50BgcCrop in CESM2.1.3. I create the case and add the following to user_nl_datm: anomaly_forcing = 'Anomaly.Forcing.Precip', 'Anomaly.Forcing.Temperature', 'Anomaly.Forcing.Pressure'...

Hi all, I am doing some simulation experiments by changing PFT fractions to representing vegetation changes. I run simulations for 90 years with CESM2.1.2 ETEST(2000_CAM60_CLM50%SP_CICE_DOCN%SOM_MOSART_SGLC_SWAV_TEST) compset and with f19_g17 resolution. ./create_newcase --case ETEST_oldsurf...

Hi all, I'm using CESM2.2.0 on Derecho and I want to make some land use data. To do this I need to use the built-in tool at components/clm/tools/mksurfdata_map, which I used before on Cheyenne. When I try to compile the code following the first step of the readme: cd src gmake I get a load of...

I have observed a stark contrast in irrigation coverage (mostly in the northern hemisphere) between cesm2.2.2 and ctsm5.2 CLM runs with identical case setup. Both runs used I2000Clm50BgcCrop compset and were simulated for 12 months starting 2000-01-01. Similar issue in all three irrigation...

Hi all, I'm trying to reproduce some CLM5 input files I generated on Cheyenne a while back, using the mksrfdata_map tool. For consistency reasons I need to use the historical files from CLM5.0 rather than the newer CTSM5.2 ones which have different land use. The filenames are...

Hi all, I have a transient historical run in CLM5 starting in 1901 which fails after the first few timesteps or so. The error in the atm.log is (shr_dmodel_readstrm) file ub...

Hi all, I'm trying to port CESM2.3.alpha17 to my HPC. When I run the ensemble test for F2000climo after installing the model: :/$CESMROOT/tools/statistical_ensemble_test> python ensemble.py --case $CESMROOT/runs/F2000climo_CESM2.3.alpha17.uf.0000 --ect cam --uf --mach archer2 --compset...

Hello, everyone! My compset is 1850_CAM60_CLM50%FATES_CICE_POP2%ECO_MOSART_CISM2%EVOLVE_WW3_BGC%BDRD conducted by CESM2, and all other settings are default. I want to analyze pattern changes in vegetation types, but I couldn't find related variables in the CLM output files. Does the default...

Hi, I tried to run I2000CLM50CN composet for ten model years without making any modifications. However, when I checked the output TLAI or GPP, I found that its value was normal in the first year, but it began to decline rapidly in the second year and approached 0. I understood that this meant...

Hi, all, I perform a simulation using IHIST, but accidently set the namelist as follow: &dynamic_subgrid do_transient_crops = .false. do_transient_pfts = .false. flanduse_timeseries =...

Hi, all, I plan to make a FHIST simulation using modified timeseries land cover data (time period 2000-2010) ,it means land cover in China needed to be changed annually, outside of china the land cover keep consistency as in flanduse_timeseries. Firstly, i change the value of PCT_CROP...

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...

I want to use the ICLMCN model to simulate soil carbon fluxes over historical periods, but there is no Component Set named 'IHISTCLM50CN', so how do I do this? My idea is to use I2000Clm50Cn to spinup the model for 600 years (to reach equilibrium)at first. Since IHISTCLM50CN does not exist...

Hi, Recently I have been trying to modify some of the CLM code to see the impact on the results. I was interested in soil carbon, so I tried to deal with the decomposition of soil carbon, and I did a simple test. Created a CASE - I2000Clm50Cn first, and then I copied...

Hi all, A fairly broad question but hopefully easy for those in the know - how would I go about estimating the water demand from natural PFTs (as opposed to crops)? I'm interested in comparing how much water is used by tree PFTs vs irrigated crops, domestic/industrial use, etc. for SSP...

Hi everyone, According to the CLM5.0 user's guide, If I want to create my own surface data, I need to first generate a SCRIPgrids based on the raw data, then use mkmapdata.sh to generate corresponding map files, and finally use mkserfdata_map generate surface daataset. What I want to know is, if...