Scheduled Downtime
On Tuesday 24 October 2023 @ 5pm MT the forums will be in read only mode in preparation for the downtime. On Wednesday 25 October 2023 @ 5am MT, this website will be down for maintenance and expected to return online later in the morning.
Normal Operations
The forums are back online with normal operations. If you notice any issues or errors related to the forums, please reach out to help@ucar.edu

cesm1

  1. K

    Fully-coupled simulation with 2000 climatology

    Dear all, I would like to do a fully-coupled simualtion with 2000 climatology with CESM2. I think I should use the BC5L45BGC, which like B_2000_CAM5_CN in CESM1? However, the supported level of BC5L45BGC is just 'defined', and BC5L45BGC does not have a Scientifically Supported Grids. If the...
  2. K

    How to convert SOILLIQ (kg/m^2) to H2OSOI (m^3/m^3) from clm output

    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
  3. K

    Set a specific soil moisture climatology field when calculating the heat flux released from the land

    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...
  4. K

    Set a specific SST climatology field when calculating the heat flux released from the ocean

    Hi, I am trying to replace the SST data with a SST climatology file in the fully coupled CESM1 only when the model is calculating the heat flux (i.e., latent and sensible heat flux), and maintain the coupling state between the ocean and the atmosphere at the same time. In short, ocean component...
  5. Jerry

    CESM1.2.0 porting issues

    What version of the code are you using? CESM1.2.0 Have you made any changes to files in the source tree? Not yet, just for porting now. Describe every step you took leading up to the problem: We want to porting CESM1.2.0 to a HPC machine. We want to port CESM1 instead of CESM2 because most...
  6. K

    How to change the sea upward flux in CPL in CESM1?

    Hi, I am trying to replace the SST data input CPL with a SST climatology file in the fully coupled CESM1, and maintain the coupling state between the ocean and the atmosphere at the same time. So only CPL can see the SST climatology file when the model is calculating the heat flux. But I have no...
  7. T

    CESM1-CAM5 pre-industrial control output

    Hello. I am looking for ocean and atmosphere output variables for the CESM1-CAM5 piControl simulation for comparison with a paleoclimate simulation. I have searched through ESGF nodes and NCAR climate data gateway. I did manage to find data on the ESGF CMIP5 output, but the download for many...
  8. B

    A random error occurred while replacing the POP2 component runtime in CESM version 1.3

    I tried to replace the system's own POP2 component with another ocean component on cesm1_3_beta17_sehires38, and created a case where compset was GIAF and res was f19_g16_rx1, but the following random errors occurred when the run process was repeatedly executed. May I ask why? Using the same...
  9. C

    Can I use the restart file from cesm2 as the start files of the cesm1 continuation?

    Hi all, For some reason, I can't use cesm2 to run. But I got the spinup files from cesm2. I want to use those spinup files as the finit data to drive cesm1 for continue_run. It is possible? What are the corresponding processes and steps?
  10. A

    CESM1 resolution and CESM CMIP6 data

    Greatings, I would like to simulate climate change effects in Brazil using the CESM1 model (CMIP5). I am looking for CESM’s resolution information to realize regional dynamical downscaling with the WRF mesoscale model. According to information catched on NCAR Website, the CESM (CESM1) model...
  11. S

    configure: error: netcdf.mod not found in NETCDF_PATH/include

    Hi, I am using CESM version 1.1.2 to build the B20TRLENS compset. I have attached my config_machines.xml, config_compiler.xml and other machine-specific files. I am using the intel13 compiler with the following specs:- <compiler COMPILER="intel13"> <PNETCDF_PATH></PNETCDF_PATH>...
  12. Y

    CESM 1.2.2 running errors

    Hi All,I am trying to run the CESM 1.2.2 with the B_RCP8.5_CN compset. I was planning to run time slices 2045-2055. I am using the "trop_mozart" mechanism.  I have several error messages: 1) First, I have the error message of "ERROR: chem_surfvals_readnl: Cannot specify both bndtvghg and...
  13. A

    ne5np4 SCRIPgrid required

    Dear all,CESM1/MESSy (geosci-model-dev.net/9/125/2016/) regrids import data online, using SCRIP, which requires the grid corners. These are available on yellowstone, e.g./glade/p/cesmdata/cseg/inputdata/lnd/clm2/mappingdata/grids/SCRIPgrid_ne16np4_nomask_c110512.ncbut are missing for the new...
  14. erik

    CESM1.2.z: for CLM4.5: Important Bad interpretation of maximum rate constant for soil water content in SoilbiogeochemDecompCasc

    The following reference was interpreted wrongly in terms of the maximum rate of soil respiration. This issue goes back to the introduction of CLM4.5 ! calculate the rate constant scalar for soil water content. ! Uses the log relationship with water potential given in <br />! Andren, O...
  15. D

    CESM1.1.2_LENS: E1850LENS and F1850LENS

    Just a heads up that the E1850LENS and F1850LENS compsets do not run out of the box from the special Large-Ensemble (LENS) tag. The fix is easy however. The "CO2" fields need to be removed from CAM's fincl list as co2_cycle is .false. in these compsets and the fincl variables are not recognized...
  16. J

    CESM1.2.z - memory leak when using intel 14.x compiler

    The intel 14 compiler causes a memory leak in the pop model in file diags_on_lat_aux_grid.F90The following change resolves the problem: --- diags_on_lat_aux_grid.F90(revision 64866)+++ diags_on_lat_aux_grid.F90(working copy)@@ -711,8 +711,11 @@         REGION_MASK_LAT_AUX(:,:,2) =...
  17. E

    timing utility bug

    The timing utility code in cesm1_2_2 and earlier (not sure how far back this goes) has a bug in perf_mod.F90 which results in no output being produced when the global statistics are turned off (via setting the namelist variable profile_global_stats=.false.). The fix is to change the value of...
  18. A

    CESM1.1.z and CESM1.2.z - Issue using RESUBMIT option in env_run.xml when setting certain variables in user_nl_pop2

    Affected Releases CESM1.1.z and CESM1.2.z(Bugzilla 1861) There are some variables in the pop2 namelist that are set by build-namelist based on environment variables. For example, init_ts_option is usually 'ccsm_startup', 'ccsm_branch', 'ccsm_hybrid', or 'ccsm_continue' depending on the values of...
  19. A

    CESM1.1.z and CESM1.2.z -The check_input_data script does not grab POP's .hdr files (associated with binary data files) from the

    Affected Releases - CESM1.1.z and CESM1.2.z(Bugzilla 1877) Details included in the Bugzilla report.The check_input_data script does not grab POP's .hdr files (associated with binary data files) from the inputdata repository, so data is not read correctly on new machines until these files are...
  20. A

    CESM1.2.z - Minor -- lake hydrology bug when sudden intense snowstorm occurs preceeded by warm weather.

    Affected Releases - CESM1.2.z(Bugzilla 1717) For CLM4.5, I found one error that is not just a typo but also shows up in a rarely exercised portion of the code (most likely a sudden very intense snowstorm-- ~8 cm/hr -- preceded by warmer weather) in SLakeHydrology, where the top lake layer...
Top