specified dynamics

  1. B

    Quadruple CO2 in restart file for branch SD-WACCM-X run, fails with "GHP7 NOT CONVERGING" and "CO2 has exceeded the limit"

    I'm trying to run a quadruple CO2 simulation in SD-WACCM-X by performing a branch run where I quadruple the CO2 in the lower boundary as well as in the restart file that the run is initializing off of. To do this, I first performed a run with standard CO2 for one month, then I did a second...
  2. Y

    Latest MERRA2 forcing files for specified dynamics in WACCM

    Hello, The MERRA2 forcing files used to nudge the atmospheric fields, in the specified dynamics configuration, stop in April 2021: /glade/p/cesmdata/cseg/inputdata/atm/cam/met/MERRA2/0.9x1.25/ Are the newest files for 2021-2023 available somewhere? And if not, is there a plan to make them...
  3. Y

    Confusion about run CESM with specified dynamics and nudging

    Greetings, If I want to run CESM with specified dynamics or nudging in the atmosphere in the future, and I specify the scenario, such as ssp245. Could I do it this way? Could I first simulate the meteorological conditions of 2030 and then use the simulated data for nudging? Thanks in advance.
  4. J

    A question of gathering field in modifying the code in atmocphere dynamic in CESM

    I am researching the roles of WWBs in ENSO, using CESM 1.2. But came to some questions when I am trying to modify the model. I am trying to change the wind or pressure field in the interior atmosphere dynamics. When I tried to modify it, the mpi or chunk problem went out, it seems before I want...
  5. E

    Missing leves in MERRA2

    Hello! I'm using the compset FWSD --res f09_f09_mg17 and I want to nudge toward MERRA2. However I get the error: ERROR: nudging_update_analyses_fv: nlon= 288 Nudge_nlon= 288 ERROR: nudging_update_analyses_fv: nlat= 192 Nudge_nlat= 192 ERROR...
  6. mmills

    Changing the start date for a run with specified dynamics

    A user recently sent me an email about an common issue, so I thought it would be useful to share the solution here: Question: I am running WACCM with the FWmaSD compset and the default start date is 2005-01-01. When I try to change this to say, 2006-01-01 or any other date, the code crashes...
  7. D

    Run SD-WACCM compset with perpetual year (using MERRA)

    Hello everyone,I have succesfully run SD-WACCM compset using GEOS5 dataset. Now I would like to use the MERRA dataset to perform further SD-WACCM runs (I am using version 1.2.2 of CESM).In particular I would like to know if it is possible to set a perpetual year (say 2000) as atmospheric...
  8. S

    Nudging approach in SD-WACCM

    Hi everyone,I have run the SD-WACCM with GEOS-5. I have 2 questions.1, The nudging approach is applied at every 6 hours (default), so the output at 0,6,12,18 o‘clock,is the model predictive field (before nudging)? or the analysis field (after nudging)?2, What’s the difference between SD and SC...
  9. H

    How to get GEOS5 input data for SD-WACCM?

    I could not run SD-WACCM (compset FSDW) for more than 1 month because of following error in atm.log.How can I get GEOS5.1_19x2_20050201.nc and related GEOS5 files mentioned in GEOS5_filenames_list_c110728.txt?Thank you very much for your kind help.    incr_flnm: old filename =...
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