cam

Hi all，I want to know how to turn off the indirect radiation effects of aerosols.

I have created a CIME case, which has been setup and built. As I understand, the namelist files user_nl_xxxx can be edited post-build. If I want to vary a namelist setting X across several runs, I can do that by 1) Running CESM 2) editing X=... in user_nl_xxxx 3) Run again Two problems... 1)...

Hello: There was an error when I use the CAM compset "FC2010climo", something went wrong when I type the "./case.submit" command. Below is error message: ------------------------------------------------------------------------- 2020-12-20 20:09:05 MODEL EXECUTION BEGINS HERE run command is...

Hi, I am trying to run a case using FHIST_BGC compset, ./create_newcase --compset FHIST_BGC --res f09_f09_mg17 --case ~/CESM2/scratch/FHIST_BGC. when check the input data, I found three soa_a1 files are missing that could not found in ftp://ftp.cgd.ucar.edu/cesm/inputdata/. my CESM release is...

Dear everyone: I have got the same error in some F* case (such as FWHIST_BGC, FWmaHist-BGC andFCfireHIST), even if run with default, the error is pio_support::pio_die:: myrank= -1 : ERROR: pionfget_mod.F90:. my cesm release is 2.1.3, my machine plateform is tianhe2. my case...

Hi everyone! Is there a way to get air density from CESM1.2.2? Looks like air density is not included in the master history file for either CAM4 or CAM5. Thanks, Wade http://www.cesm.ucar.edu/models/cesm1.0/cam/docs/ug5_0/hist_flds_fv_cam4.html...

Running a coupled model with F compset and two different CAM physics downloaded its input data from the server. Now, i have few questions for some clarification before analyzing them. 1- Suppose my model is already in a balance state with appropriate recommended spin-up, do i need any extra...

Hello all, I'm doing an LGM run of CESM1 using component set B1850 and following the paleoclimate simulation guide from NCAR. I'm currently working on creating a new initialization file for CAM (bnd_topo). The last step before getting bnd_topo is to run "mod_landm_coslat.ncl". This is all in...

Hello, I am running CESM 2.00 in Cheyenne. I ran a couple of prescribed SST runs with F2000climo. Now I want to change the CO2 concentration with F2000climo compset. I added co2vmr values in the user_nl_cam. However, the model doesn't take the value, and I don't see any changes in the atm_in...

Hello everyone, I frequently encounter below errors on some of my slightly customized CESM 1.2.2 runs. The same errors persist every tens if not several model years, even though I switched to almost default settings with minor changes in co2 mixing ratio etc. Does anyone have clues of possible...

Hello FYI I am using CAM from CESM 2.1. The code logic in cam_diagnostics.F90 near line 1413 is not correct, and produces a wrong Q925 output, which is nonphysical, follows the topography; has a range that straddles negative values; has near-zero values over the ocean, etc. That code logic...

Hi, Could someone confirm whether the SO2 external forcing (emissions-cmip6_SO2) includes both volcanic continuous (degassing) and explosive (eruptions) SO2 emissions? Mvh, Jeani

Hello,I am trying to run CESM2.0 with some modifications of my own. It has been running successfully. Recently I slightly changed the code in chemistry/aerosol/sslt_sections.F90 and chemistry/modal_aero/seasalt_model.F90 (made one parameter have 2 values depending on latitude). Now the model...

Hi all, I'm running CESM1.2.2 with CAM4. I wish to output 3D monthly averages of transient-eddy fluxes in the atmosphere (water vapor, temperature, geopotential, momentum). Are these fluxes available as standard History Fields? I had a look in the CAM4 documnetnation but couldn't find them... If...