cesm2

I am attempting to use the archived CESM2(WACCM6) output available at NSF NCAR GDEX Dataset d651045 for a study of stratospheric mixing and have a question about the tracers AOA1 and AOA2. Their names indicate that they are some sort of age of air, and the distributions of these tracers in the...

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What version of the code are you using? release-cesm2.1.5-0-g7a6c5b0 (describe version attached) Have you made any changes to files in the source tree? No changes to the source tree. Describe every step you took leading up to the problem...

Dear Team, I am analyzing esm-ssp585-ssp126Lu LUMIP simulations of CESM2. I was wanting to plot the treeFrac Daten which I thought could be treated as the "input" / "forcing" difference compared to the esm-ssp585 simulations. However, on ESGF I could not find this output. Thus, I was...

Hi everyone, I use CESM 2.1.4 and have some questions about restart files: 1. When restarting an experiment—whether it's a branch run or recovering a crashed simulation—what is the exact function of the cam.rs file and cam.i file? I understand that cam.r typically contains the initial...

Hi, CESM team. I ran the BSSP126 component in CESM. My CESM version is 2.1.3. I'd like to know how to view the temporal dynamics of carbon emissions resulting from land-use change. I haven't been able to locate the corresponding variable name—or have I overlooked it?

What version of the code are you using? I am using CESM2.1.5 with CLM5.0 Describe every step you took leading up to the problem: I am working with the following component set that enable dynamic vegetation: 2000_CAM60_CLM50%BGCDV-CROP_CICE%PRES_DOCN%DOM_MOSART_CISM2%NOEVOLVE_SWAV The...

I am using CESM2.1.3 and running a CMIP6 SSP5-85 simulation (2015-2100) with the component set SSP585_CAM60_CLM50%BGC-CROP-CMIP6DECK_CICE%CMIP6_POP2%ECO%ABIO-DIC_MOSART_CISM2%NOEVOLVE_WW3_BGC%BDRD. I have been submitting simulations in 3-year chunks. I have successfully run the model through...

What version of the code are you using? CESM2.1.3 Have you made any changes to files in the source tree? sed -i "$ a use_soil_moisture_streams = .true." user_nl_clm sed -i "$ a stream_fldfilename_soilm =...

What version of the code are you using? CESM2.2 and CAM6 Have you made any changes to files in the source tree? Changes in the nudging module and the dust scheme Describe your problem or question: From the documentation I see that besides the AODDUST, it is possible to get the AODDUST for...

Hi all, I’m running a default CESM2 case with F2000climo compset, and I’m trying to assess spin-up stability using Keith Oleson’s script SpinupStability_SP_v10.ncl. I’m surprised that after a 20-year run, several global variables still fail the equilibrium tests unless I loosen thresholds. I...

Hi everyone, I would like to study the climate impacts of a specific volcanic eruption using CESM2.1.5 (CAM6). For example, I want to start from a piControl condition, impose a volcanic forcing corresponding to the 1991 Pinatubo eruption, and simulate the climate response over the following 5...

What version of the code are you using? CESM2.2.2 and ESMF 8.7.0 I create the case through: ./create_newcase --case ~/work/CESM/debug_module --compset FXHIST --res f09_f09_mg17 --mach tylogin02 --run-unsupported Have you made any changes to files in the source tree? For xml file changes: in...

Hi, In a F2000Climo simulation, I set ‘use_soil_moisture_streams = .true. ’. The model automatically reads the monthly average H2OSOI file. I just wonder how the model processes the daily H2OSOI data, as I have observed that the daily H2OSOI values are not entirely consistent year-on-year. Any...

What version of the code are you using? - CESM 2.1.3 Have you made any changes to files in the source tree? - No Describe your problem or question: - I am running a simple test using F2000climo in CESM2.1.3. I have made no modifications and am only conducting a basic control experiment. To...

What version of the code are you using? We use CESM 2.1.4, running on Derecho. Describe every step you took leading up to the problem: We want to explore the effects of land cover change-atmosphere interactions on ecosystem productivity/photosynthesis. We plan to run 4 simulations, the...

I am modifying the POP source code in CESM2.1.3 and having trouble optimizing the performance. In forcing_coupled.F90, which receives surface forcing fields from the coupler, I overwrite the CESM prediction of wind stress with my own statistical prediction based on SST from CAM. My statistical...

I am modifying the POP source code in CESM2.1.3 and having trouble optimizing the performance. In forcing_coupled.F90, which receives surface forcing fields from the coupler, I overwrite the CESM prediction of wind stress with my own statistical prediction based on SST from CAM. My statistical...

What version of the code are you using? release-cesm2.2.2 Have you made any changes to files in the source tree? No Describe every step you took leading up to the problem: I'm testing two experiments with the same compset and model version. ./create_newcase --case...

I am using CESM2.1.3 to try to run a simulation with CMIP6 Historical forcing I intend to initialize the model using restart files (ideally those available on NCAR Derecho) for the year 1970, and execute a simulation with a Historical compset up to the year 2015. The CMIP6 Historical compset I...