answered

I am currently conducting sensitivity experiments using CESM, but I have encountered some issues. Could you please explain the meaning of the unit "kg/kg" for the aerosol concentration variables such as so4_a1 and so4_a2 in the model outputs? Additionally, how can these values be converted into...

I am currently conducting sensitivity experiments using CESM, but I have encountered some issues. Could you please explain the meaning of the unit "kg/kg" for the aerosol concentration variables such as so4_a1 and so4_a2 in the model outputs? Additionally, how can these values be converted into...

What version of the code are you using? CESM2.2.2 Have you made any changes to files in the source tree? No Describe your problem or question: Hi all, I am running FCnudged and interested in black carbon radiative forcing. In the user guideline, 8. Physics modifications via the namelist —...

I am currently using CESM2.2.0 to simulate N and S deposition, PM2.5, and AOD values, but I am unable to run it successfully. I encounter the following error during the execution, and I would like to know the cause[ "CAM_CONFIG_OPTS" value="-phys cam6 -chem trop_strat_mam4_vbs -co2_cycle]...

Dear CESM Community, I am currently working on an aquaplanet simulation using CESM, and I would like to disable specific land-based aerosol modes while using MAM7. The aerosol modes I want to remove are as follows: Primary carbon Fine dust Coarse dust However, I still want to keep sea salt...

What version of the code are you using? CESM2.2.2 Have you made any changes to files in the source tree? Some modifications in nudging module Describe every step you took leading up to the problem: I am looking to run CAM6 during the current year 2024 and I would need to update some files in...

What version of the code are you using? CESM2.2.2 Have you made any changes to files in the source tree? Some modifications in the nudging module Describe every step you took leading up to the problem: I ran some tests using new re-analisys data and modifying aerosols and after running a...

Hello, I would like to do an aerosol injection experiment at a specific altitude, specific location, similar to the ARISE-SAI experiment. I have questions regarding the experiment. 1. is it possible to do SAI experiment with CAM6-chem? If yes, how can I set some variables of user_nl_cam to do...

Hi! I am currently using the FHIST compset of CESM2.1.3 for simulation, with a planned simulation period from 2000 to 2014. I have set up two sets of tests: (1) one set of tests defaults to turning on dust emission; (2) Another set of tests turned off dust emission by setting the soil_erod_file...

What version of the code are you using? CESM2.2.2 Have you made any changes to files in the source tree? Some changes in the nudging module Describe every step you took leading up to the problem: I want to run CESM(CAM6) beyond 2015 and I have updated the biomass burning using the emission...

What version of the code are you using? 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 tried to use CAMS anthropogenic emission data in CESM. In the IPT algorithm...

I wanna konw how to change the anthropogenic PM2.5 inventory in cesm, what are the steps and where I can find the guidance? Thanks

Hi everyone, I'm an undergrad student looking to add new aerosol types to CESM for solar geoengineering studies, specifically those that don’t already exist within the model. I’ve been exploring the files under cam/src/chemistry/modal_aero and I’m considering modifying the MAM to incorporate...

Hi, I am using the CESM 2.1.3. If I want to use the HIST component set that combines cam6 with the mozart chemical mechanism, do I use the compset FHIST and set CAM_CONFIG_OPTS=-chem trop_mozart or do I use FCHIST and change to CAM_CONFIG_OPTS=-chem trop_mozart？ Sincerely hope to get your...

Which parameters in the CAM model describe lightning information? I used the compset FWSD.

Hi there, I am currently using CESM2.3.ahpha17d with the CAM tag set to cam6_3_144, the compset as FCnudged, and the resolution set to ne30_ne30_mg17. During the check inputdata phase, I encountered an issue where the data MERRA2_ne30_32L is missing. I have checked the repository at...

I am new to CESM, when I run the CESM2.1.3 and the output of black carbon is confusing for me. There are bc_a1 and bc_a4, also bc_c1, so what the meaning of them? If I want to calculate the bc concentration, is the sum of bc_a1 and bc_a4? The units of bc_a1 is kg/kg, so how to convert it to...

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...

I want to replace the default SO2 emission with my own SO2 emissions in F2000climo. The sulfate emis = SO2_emis * 0.025. What are the proportions of so4_a1 and so4_a2 in the total sulfate emissions, respectively? I really need the help.

Hi, In the chapter 9.5 of CAM tutorial says: Removing species from modes requires us to create new mode definitions. Using black carbon as a specific example, we see from the default definitions of the trop_mam4 modes that black carbon is contained in mam4_mode1 and mam4_mode4.The best way to...