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Configuring a run with aerosol budgets (NorESM2)
In both the default CAM5-aerosol packages (MAM3,MAM7) and the Oslo-aerosol packages, the budget terms can be taken out using a variable in the namelist :
&phys_ctl_nl history_aerosol = .true. /
Fields produced in monthly average files when running with budgets activated
Running with budgets activated will produce the following terms in the monthly output files:
| Output variable name | Meaning | Comment |
|---|---|---|
| SF{Tracer} | Emissions from surface | |
| GS_{Tracer} | gas phase chemistry | 3D-emissions and gas phase washout included in this term |
| AQ_{Tracer} | aquous chemistry | |
| {Tracer}_Mixnuc1 | Activation in clouds and evaporation of cloud droplets | |
| {Tracer}_DDF | Dry deposition flux (aerosol tracers) | |
| {Tracer}_SFWET | Wet deposition flux (aerosol tracers) | |
| {Tracer}_condtend | loss/production in condensation/nuclation | (CAM-Oslo only) |
| {Tracer}_coagTend | loss/production in coagulation | (CAM-Oslo only) |
| DF_{Tracer} | dry deposition flux (gas tracers) | output with history_aerosol with CAM-Oslo only |
| WD_A_{Tracer} | wet deposititon flux (gas tracers) | output with history_aerosol with CAM-Oslo only |
| Tracer_{CLXF} | 3D-emissions (“external forcing”) | output with history_aerosol with CAM-Oslo only |
Note: Since 3D-emissions and and gas washout rates are included in the term GS_{Tracer} in the mozart chemistry solver, the individual terms can be found like this (example for SO2):
ncap2 -O -s GS_ONLY_SO2=GS_SO2-WD_A_SO2-SO2_CLXF infile.nc outfile.nc
Looking at the aerosol budgets (CAM-Oslo only)
- Go to the directory models/atm/cam/tools/diagnostics/ncl/budgets
- Change the filename to use in the file budgets.ncl (“myFileName” around line 18). Should be for example yearly average of month-avg file in a run with budgets
- Run the script budgets.sh to create a pdf-file (output.pdf)
Preparing output for AEROCOM
To prepare output for aerocom, use the script located at models/atm/cam/tools/aerocom/ in the svn repository. The script creates files named like aerocom3.${MODELNAME}_${EXPERIMENTNAME}.SVNR{RevisionNumber}.monthly.${VariableName}.nc
Copy these files to the catalogue XXXX and they will be picked up by scripts which show them on the aerocom webpage