clm

Hello, everyone: "I would like to ask if there is a way to change some fixed values in parameterization schemes. I have been searching the source code but I can't find any relevant information. For these fixed constants, is there a separate file where they are stored? For example, I have...

Hi, all, I use a modifed version of CLM5 to run a single-point simulation, after 13 years run (now is 2006), the LAI started to drop to almost 0 (now LEAFC becom to negative), then after continue run 7 years (now is 2013), the model stopped, with netcdf write issues (I thought some extreme...

Hi, I'd like to use SNICAR to get the aerosol on snow forcing diagnostics. I'm using cesm2.1.3 (see ./describe_version results in text file), and haven't made any code changes. create_newcase --case B2010_base --compset...

Hi, CESM team! I'm a bit confused about how to adjust the forest Fraction annually. In CESM, there are PCT_NATVEG and PCT_NATVEG_PFT. As far as I understand, PCT_NATVEG is the land use data determined at the start year when CESM is initiated(in fsurdat ). The landtime series file only contains...

Hi, all The model I'm using with palm tree functionality is based on ctsm1.dev040 (I runs well), but this version doesn't have SSP, so I need to upgrade my development version to the nearest version that does have SSP, which is ctsm1.dev090, and by upgrade I mean copying the src folder of...

Hi, the version of the model I'm using is CESM2.1.3, and the compset is FHIST (HIST_CAM60_CLM50%SP_CICE%PRES_DOCN%DOM_MOSART_SGLC_SWAV). I plan to use annually varying LAI in the model. I can provide a 10-year monthly LAI dataset based on other satellite observations, but I found that the...

./create_newcase --case Myco2case --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 all, I want to investigate the response of atmosphere to the variability of soil moisture over a certain region. I wonder how to modify the soil moisture and which files or setting should be changed. Any reply would be greatly appreciated.

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...

./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,all! Recently I've been trying to use the new GCAM data to convert it into land use data that can be driven by CLM (related post). I still have some questions about how LUH2 is converted to CLM standard format for land use driver data. My CESM version is 2.1.3. 1. When converting to LUH2...

./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,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