cam6

Hi, I am looking to produce some nudged simulations in the CESM2 CAM6 subseasonal prediction system. Some of these will be everywhere (constant window function) and some will be in particular boxes using a window function horizontally and vertically (tropical troposphere, extratropical NH...

Hello, everyone, I am using CESM 2.1.3 PC6 compset aiming to diagnosis of radiation flux by PORT. This compset requires a set of input file. I used the h1 file exported from F2000climo as a "base", with modified variables in it. I modified all the variables containing the time and vertical...

Hi all, I am doing some simulation experiments by changing PFT fractions to representing vegetation changes. I run simulations for 90 years with CESM2.1.2 ETEST(2000_CAM60_CLM50%SP_CICE_DOCN%SOM_MOSART_SGLC_SWAV_TEST) compset and with f19_g17 resolution. ./create_newcase --case ETEST_oldsurf...

Greetings, I was wondering if somebody could help me to understand the reason of some outputs I got using CAM6 in CESM2.2.2 (running in Derecho). I asked CAM6 to write frequencies for each history files series each 30 minutes. FCnudge compset and MERRA-2 reanalysis are used for these tests. In...

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...