clm5.0

Dear colleagues Reposting from the CLM forum. I am running CLM5 regionally in a 3 km resolution over the EU-CORDEX domain. Thus far, our model has worked with forcings that we downscaled to this 3km EU-CORDEX grid without problems. Now, I need to run the same clm5 model but with 12 km resolved...

What version of the code are you using? release-cesm2.2.0 Have you made any changes to files in the source tree? No Describe your problem or question: Hi all, I am currently using CLM5.0 along with the emission_ssp585 dataset to generate land use timeseries data and surface data for my...

Describe your problem or question: Dear NCAR scientists, I am using output from the historical run of CMIP6 (variant_label = 'r1i1p1f1') to analyze photosynthesis. In CLM, plants use C3 and C4 pathways for photosynthesis. I think the input data from CLM should include C3 and C4 plant...

Hello, I've been using CESM2.2.1 for local offline simulations, and I'm constantly confused about the compilation order and module hierarchy in the CESM2.2/components/clm/src/biogeophys/ directory. While there is a CMakeLists.txt file in this directory, it is only used for unit testing and...

Hello Everyone! I am a student and recently started studying the Community Land Model (CLM). I want to estimate soil moisture using CLM. I tried to look for tutorials about soil moisture estimations on YouTube and other platforms. However, I am unable to find any particular tutorials or...

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...

What version of the code are you using? - I ran CESM 2.1.4 on NCAR HPC. Have you made any changes to files in the source tree? - I only changed the default “fsurdat” Describe every step you took leading up to the problem: - Specific steps: 1) create a new case with F2000climo compset...

I want to create a case to make the model use my own downloaded co2 file (cmip6 download rcp2.6 data) : /home/hlh/cesm/inputdata/atm/datm7/CO2/fgco2_Oyr_CanESM5_rcp26 - cmip5_r1i1p1f1_gn_2006 - 2100.nc How can the next operation be completed? Hopefully, you can start by creating a case How...

I would like to ask all seniors, when using CLM5 to simulate fire-related variables, how do you calculate the area and number of fires? Do you calculate it through the variable FAREA_BURNED? I think this variable means the time step area fraction. How to use this? To calculate the fire area of...

./create_newcase --case HistClm50BgcCrop --res f09_g16 --compset IHistClm50BgcCrop --mach myintel --compiler intel --run-unsupported I created this case, I want the model to use my own file download of co2 (cmip6 download rcp2.6 data)...

Dear Team, I was running a CLM5.0-only simulation with the I2000Clm50BgcCrop compset where I planted additional trees. I was reading in a different surfdat file where the tree coverage (natpft 1-8) is increased while the crop area is decreased accordingly (PCT_CROP). As a check that my...

./create_newcase --case HistClm50BgcCrop --res f09_g16 --compset IHistClm50BgcCrop --mach myintel --compiler intel --run-unsupported I created this case, I want the model to use my own file download of co2 (cmip6 download rcp2.6 data)...

Hi @oleson , I'm currently checking the NetCDF file for the anomaly forcing. I found that the fill value for precipitation is set to 1 (with units of mm/s). The file path for the anomaly forcing I’ve checked is...

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...

Hi all, I'm running CESM2.1.3 (CLM5.0) and am interested in outputting certain CLM5 variables to do with fire at PFT level. I set up two identical test cases, with the same input files, where one case specified PFT-level output and the other didn't. The latter case ran fine; the former case...

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...

Dear all We are using the CLM5.0 model to conduct a series of parameter sensitivity experiments. But there are some questions in the process After we modify the parameters, do we need to restart the cold start to make the model reach a new equilibrium and stable state before the final spinup...

Dear all, I used CLM5.0 in CESM2.1.2 for single point simulation, and the simulated site was FR Pue (Puechabon, France) (43.7413, 3.5957) The time is from 2000 to 2014, and the vegetation type is evergreen broad-leaved forest. Atmospheric forcing data from half-hour observations at...

What version of the code are you using? ctsm5.2.023 Have you made any changes to files in the source tree? None Describe every step you took leading up to the problem: Typical steps for regional case: ./create_newcase --case...