cam5

Hello, I am trying to run a series of perturbed parameter experiments using CESM1.2.2 with a reduced solar constant. Using the B1850CN compset (with CAM4) I can modify the namelist parameter 'solar_const' in the user_nl_cam file with ease. However, when using the same compset with CAM5...

Hello, I have the input data for B2000CAM5CN (e.g. ar5_mam3_oc_surf_2000_c090726.nc). The unit for OC emission is molecules/cm2/s. I want to compare the emissions from EDAGR (emission unit is [kg/m2/s]) and that from CESM input data. So, how can I convert [molecules/cm2/s] to [kg/m2/s]? I...

Dear all, My research requires me to modify the value of land or soil albedo to calculate the change of radiative foring as a simulation. I use the user_defined compset while all the other components except cam5 are stub, as the PORT guide https://wiki.ucar.edu/display/port/PORT explains. Now...

Hello, I have an issue with rad_diag_2 ,ncdata and &rad_cnst_nl; it is at a default file path and I am unable to change it to my file path because I do not have the data. I have copied my terminal screen: ncdata =...

Dear All, I am interested in increasing the vertical eddy viscosity in CAM5.3 (using diag_TKE) to study Hadley cell dynamics. My goal is to introduce more viscosity, so as to weaken the subtropical jet. The best way I have found so far is through increasing the namelist variable...

Dear all, I would like to use PORT to diagnose radiative forcing in CAM5. I have repeatedly tried to use PORT in the officially released CESM1.2.2 distribution, where lots of CAM5 compsets are available. Unfortunately, the PORT flag (-offline_drv rad) only works with CAM4 radiation (CAMRT) in...

Hi folks, I'm trying to do a set of simulations in CAM5, run in atmosphere-only mode (F_1850_CAM5 compset), that modifies the input emissions of DMS to reduce emissions in a specific region. I'm in search of information on the correct diagnostics for DMS and on how CAM5 handles DMS emissions so...