cam6

Greetings, I would need to create a new independent module in the components/cam/src/physics/cam which will be need to run and used in here. Besides the module, I also create a modified namelist_definition.xml, which includes the new variables that will called. How can I make that this new...

Hi there, I am encountering a persistent issue with building a case using CESM2.3.alpha17a. My configuration includes CAM tag cam6_3_160, compset B1850, and resolution f19_g17. Each attempt to build the case results in an error. In contrast, switching the compset to...

Using ERA-5 reanalysis data and ERSSTv5 sea surface temperature data as initial conditions, and running a global model with a 25km grid spacing, it seems that the North Pacific High is not well depicted in the East Asian region during July and August when the modeling starts in March...

Dear sir/madam I have successfully build cam6 with the configuration mentioned below. compset : HIST_CAM60_CLM50%BGC-CROP_CICE%PRES_DOCN%DOM_MOSART_CISM2%NOEVOLVE_SWAV grid : f05_f05_mg17 Model is crashed with the following error: --------------------- Opened existing file...

Hi, I want to plot "precipitation - evaporation" using the simulated CAM6 data. So, I will change user_nl_cam. However, I couldn't find the evaporation variable. Through the "CAM history field (https://www2.cesm.ucar.edu/models/cesm2/atmosphere/docs/ug6/hist_flds_f2000.html)"...

Hello all: I was trying to modulate the response of the circulation to the anomalous soil moisture in a specific region in CAM6. I found that there is a variable (atm_in) that may contains the soil data (clim_soilw_file), so, I changed the prescribed soil moisture in it and ran two cases...

Hi Derecho / Cheyenne / CESM users, I am planning to run some simulations but realised while setting up and running some test simulations that there is a performance issue that seems to occur using Derecho. A strong decrease in the performance is visible an I/we do not understand why this...

Greetings, I am trying to run a case using the FHIST compset. ./create_newcase --case $casename --compset FHIST --res f09_f09_mg17 And specifying the date and step tun such as: ./xmlchange RUN_STARTDATE=20100101,STOP_OPTION=ndays,STOP_N=2,DOUT_S=FALSE The case compiles but gives me this...

Hi, I'm trying to run CESM 2.1.2 - CAM6, in the F1850 compset with prescribed historical aerosol, with and without historical solar variations. I'm trying to use the following options in the CAM namelist: ! evolving volcano prescribed_strataero_cycle_yr = -999999...

Greetings, I am trying to make some tests to make runs for years beyond 2015 using CESM2.2 (CAM6.3). I need to get updated emissions inventories because the ones my CESM2.2 is using are from CMIP6 (1849-2015). Anybody knows where could I find and update of this file...

Dear all, My research involves wind resource evaluation, so I have to simulate the wind speed as close to reality as possible. The compset I use is 2000_CAM60_CLM50%SP_CICE_DOCN%SOM_MOSART_SGLC_SWAV_TEST, a all-active compset for long-term climate simulation. I choose the slab ocean mode to...

Greetings, I found the module (~/components/cam/src/physics/cam/aer_rad_props.F90) where aerosol radiative properties are computed in CAM6. In this module from subroutine aer_rad_props_sw returns SW optical props of aerosols, which are mainly extinction optical depth, scattering and asymmetry...

Greetings, How could I know from a simple CESM run, if I am using CAM or CAM-Chem?. How could I switch/change from to another? Thanks.

Hi all, I have a run of CAM6-Chem from CESM2.1.3 with coupled land (CLM5-BGC-Crop) and oceans (POP2) forced by SSP1-2.6 GHGs and land use. I wanted to look at some convection parameters, however the output from the model for CIN was 0 everywhere and the output for CAPE was an order of magnitude...

Hi forum, It's not clear to me how the reaction rate of SO2 (gas) + OH -> H2SO4 (gas) is calculated in CAM6. The equation report in chem_mech.doc gives this reaction as d(H2SO4)/dt = r3*OH*SO2. When looking through mo_usrrxt.F90 I find this expression for the reaction rate (rxt)...

Hi all~ I'm trying to prescribe the dust and sea salt aerosol in two runs with F2010climo compsets, since I hope these two species remain the same when making comparisons. I set the prescribed_aero_nl group in user_nl_cam file as follows: &prescribed_aero_nl prescribed_aero_cycle_yr...

Hello ,everyone: I am planning to conduct volcanic forcing experiments (e.g. 1815Tambora or 1991Pinatubo) with CESM2.1.3-CAM6 to study the influence of a large eruption on climate,. Hoewvwr, I am not sure how to add the needed volcanic forcing file, via ext_frc_specifier or...

Hello everyone, I am trying to run CESM2.1.3 at the resolution f05_f05_mg17. It seems there is no topo file corresponding to 0.47x0.63 available for CAM6 in https://svn-ccsm-inputdata.cgd.ucar.edu/trunk/inputdata/atm/cam/topo. I realize that the resampling tool in interpic_new can create my own...

Hi all, I want to conduct a set of large ensemble that are similar to CMIP6 amip-4xCO2. However, I don't know how the CO2 concentration is set in amip-4xCO2 as the prescribed CO2 concentration is different every year. The compset I am using is FHIST_BGC, and I guess I am supposed to change the...

Hello everyone, I try to get the output including GRAINC_TO_FOOD with 1/2 degree by CESM2.1.3. The surface file and landuse file corresponding to f05_g17 have been generated, and I run this case with compset HIST_DATM%GSWP3v1_CLM50%BGC-CROP_SICE_SOCN_MOSART_SGLC_SWAV and resolution f05_g17...