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  1. M

    Very quick question about Paleotoolkit: gridkmt_nc2bin.f90

    Hi NCAR paleo friends, Recently I am using the NCAR paleotoolkit to create a binary KMT file from a .nc one. I used this code: However, when I look at Line 37, this...
  2. Z

    ocean -only MODE use forcing data,and "bulk_NCEP"

    I want to run ocean-only mode, use compset C, with my own forcing data. After created new case. I am tying to force the ocean model with external surface heat flux (SHF) and surface fresh water flux (SFWF). The forcing_shf_nml consist of SST, air temperature, air humidity, downward shortwave...
  3. 9

    POP aborting——FATAL ERROR: SAVG_0D_AREA is zero

    When I ran the case of the simulation of 165Ma with cesm-dt2.0, this error came and I haven't seen this before. So I want to know what the error is and how to solve it. Thx a lot :) and the below is my set in pop2
  4. S

    Accumulating TEND_TEMP only at shallowest model level

    I have modified the POP2 source code before to write out variables only at select depths before and am trying the same for TEND_TEMP at the shallowest model level. My plan is to just create a new 2d variable. Here are the steps I have taken (steps 1 and 2 are from within passive_tracers.F90) 1...
  5. J

    Previously successful run crashes after 18 years

    Hi all, I'm running a coupled atmosphere-ocean compset in CESM2.2.0 on Cheyenne. I have successfully run this compset for 10 years - in the next run of 10 years it crashed at year 18. The error in the cesm.log is: WHL, oc_tavg_helper is already associated; reset the tavg fields 0: sysmem...
  6. W

    UVel USUBM and UISOP

    Hello everyone I am a new user of CESM/pop, and one doubt came to me when analyzing the ocean velocities output. Might be simple to answer, but I couldn't find the answer anywhere. I noticed U/V is separated into three components,e.g., for V = VVEL,VSUBM,VISOP. My question is: does VVEL already...
  7. C

    Preindustrial equilibrium temperature in CESM2.2 vs CESM2.1

    Hi, I'm running a fully coupled simulation at 2 degree resolution (compset: 1850_CAM60_CLM50%BGC_CICE_POP2%ECO%ABIO-DIC_MOSART_CISM2%NOEVOLVE_WW3_BGC%BDRD, resolution: f19_g17), as a hybrid run branching from year 401 of the 2 degree PI control (b.e21.B1850.f19_g17.CMIP6-piControl-2deg.001)...
  8. W

    Too weak AMOC in G_INTERANNUAL compset using f45_g37 grid

    Hi, I am running CESM 1.2.1 using the G_INTERANNUAL compset. Forcings are from the CORE II data set (1949-2009, 62 years per cycle). When I use the f09_g16 grid, the AMOC seems fine. But when I repeat the above simulations using the f45g37 grid, AMOC seems to be pretty weak. I guess the...
  9. M

    Lack of JRA55 data on cheyenne

    I found that there is no SWUP and DN10 data under this direction: /glade/p/cesmdata/cseg/inputdata/ocn/jra55/v1.3_noleap. I'm wondering If I want to use POP2 for OGCM simulation experiments with JRA55 data for forcing, would it affect the results if I use SWUP and DN10 data under the original...
  10. C

    branch run error: (ocn_import): qsw aggregation mismatch exceeds threshold

    Hello, I intend to run G compset(only pop) for 100 years first, then turn on MARBL component from 101th year for the subsequent simulation, in order to shorten spin-up time. So I try to do a branch run at 101th year. First I run G compset(no MARBL) for 100 years to get restart files(CASE1)...
  11. U

    FATAL ERROR: Empty stream

    Hello, everyone. I cp $CCSMROOT/models/ocn/pop2/input_templates/gx1v7_tavg_contents to $CASE/SourceMods/src.pop/ and comment out unnecessary streams (only retain stream 1, which is h.). And I modified the tavg_nml in pop_in the $CASE/run/ to delete unnecessary output stream. Then I run...
  12. D

    Understanding this strange looking MOC output

    Hi, Shown below are two MOC diagnostics which directly plot the Atlantic MOC streamfunction generated by POP2. The one on the left is a PI MOC while the one on the right is for a LGM-like simulation in which the Bering Strait and the Canadian Archipelago are closed and small coastline changes...
  13. T

    Running ocean-only with changing CO2 values

    I want to run a G1850ECO_IAF case with changing CO2 values overtime. For this I changed OCN_CO2_TYPE = diagnostic, CCSM_BGC = CO2A and DATM_CO2_TSERIES = 20tr. It runs for at least 1 month but the output of ATM_CO2 is constantly 0. Did I miss an option or is CCSM_BGC set to the wrong value?
  14. 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) =...
  15. 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...
  16. 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...