cam

Recently I am trying to transport iCESM1.3 to another HPC In old HPC, the output from cam is normal and can run successfully But in the new HPC, the output from cam is all zero while the output from pop is normal.The case can be built and run successfully. When the case come into crush, I can...

Hi, I try to customize CAM outputs, I read the documentation on the topic on the github of NCAR but obviously I made a mistake. I would like to output daily average of the variables U10, LHFLX, and SHFLX so here is how I modified the file user_nl_cam: fincl2 = 'U10','LHFLX','SHFLX' nhtfrq =...

I try to fully remove the seasonal cycle for an uncoupled run. I know how to do that for SST by pointing to a new SST file. In practice, I must hand‐edit dozens of files (atmosphere, land, aerosols, radiations, etc.) to replace them with constant fields. And I felt this way to be error‐prone...

I looked at a run's prescribed SST anomalies and model output TS anomalies (ocean grids only). I noticed that they are different; the structures are largely the same, but the values have hemispheric shifts compared to the prescribed SST anomalies. I'm aware that there's a diddling procedure for...

Hi all, I am currently using the IPT tool to to regrid MERRA2 data. The original MERRA2 data are from NCAR machine. Following the instructions, I attempted to use WRAPIT to compile MAKEIC.so using NCL/6.6.2. However, I keep running into the following error: WRAPIT Version: 120209 *** buffer...

Hi, CESM team. I am using CESM 2.1.3 and running the BSSP126 scenario. The setup command I used is: When submitting the case, I encountered the following error: I have attached the `cesm.log`, `cpl.log`, and `atm.log` files for reference. Here are my attempts: Based on previous posts, I...

Hi all, I intend to regrid an fv09 Cam-Chem_ic_nudge.cam.i.2010-01-08-00000.nc file onto a SE grid. There were no errors shown in the log file during the regridding process. However, when I use it as the ncdata to run CESM2.2, I meet the following error in both the atm.log and cesm.log files...

Hello everyone, my CESM version is 1.2.2. As mentioned in the title, I created a case with a component named FAMIPC5, and its default input data is sst-HadOIBl-bc_1x1_1850_2012_c130411.nc. After searching the CAM5 user guide, I learned that this file is a Historical Time Series. So my question...

Hello, everyone. I am using CESM2.2 to run the FHIST case. I have two questions about the initial file (set by 'ncdata'). Does the initial file represent the state of a specific year, or is it simply a static equilibrium state used to start the model? When the run-type is set to startup, is it...

Hi team, I am setting up some fully coupled CESM2.1.2 simulations and trying to decide which variables to add to the fincl1 stream of the CAM output. I noticed that V10 is not a default output while U10 is. My question now would be: 1. Can I just add V10 to the...

Hi everyone, Following this page, I've successfully added new chemical species and reactions (with rates) to the chem_mech.in file, and mapped dry/wet deposition rates to the closest existing species for simplicity. Now, I’m looking for a quick way to map the radiation properties and modes of...

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 all, Recently I checked the value of ("CLDLOW","CLDMED","CLDHGH","CLDTOT") and CLOUD, but the sum of first 3 cloud type does not equal to CLDTOT, besides CLDTOT and CLOUD are also different . If i plan to use 3-types of cloud and also total cloud, i use first 3 and sum them up as total...

Hello, I am trying to modify CAM (based off of git tag `cam6_3_139`) to implement an updated gravity wave parameterization in `src/physics/cam/gw_drag.F90`. As part of my work I need to operate on some variables using the global grid rather than the chunked grid that has been scattered to...

Hi, I am a student working with a CAM6 model output (not CAM-Chem). I want to derive the mass and number concentrations of a certain aerosol type and I have several questions about the aerosol outputs: 1. For example, if the coarse mode include dust, bc, soa etc... Does the output "num_a1"...

Hi there, I am currently using CESM2.3.ahpha17d with the CAM tag set to cam6_3_144, the compset as FCnudged, and the resolution set to ne30_ne30_mg17. During the check inputdata phase, I encountered an issue where the data MERRA2_ne30_32L is missing. I have checked the repository at...

Hi, I am trying to download input data but get the following error when running ./check_input_data --download: Similar issues seemed to have been solved by modifying the cime/config/cesm/cesm_input.xml file, either by moving the svn download method first (here) or adding "/" at the end of...

Hi, I wanted to restart the two experiments of CESM2.1.3 (with compset "F200climo"). So, I changed the env_run.xml as below. ./xmlchange GET_REFCASE=FALSE ./xmlchange RUN_TYPE=branch ./xmlchange RUN_REFDATE=0053-01-01 ./xmlchange RUN_REFCASE=EXP2 -------> case name so, EXP1 or EXP2...

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 output the 10m wind speed by using U10 variable. Also, I output the TAUX and TAUY(Zonal surface stress) . TAUX and TAUY do not seem to be the U,V variables needed to plot wind direction. UBOT and VBOT seem to be the corresponding variables, but for heights higher than 10 m. Is...