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noresm:aerosolbudgetsnoresm2 [2015-06-08 11:53:59] alfg |
noresm:aerosolbudgetsnoresm2 [2022-05-31 09:29:32] |
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- | ===Configuring a run with more aerosol diagnostics in (NorESM2) === | ||
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- | 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 : | ||
- | |||
- | < | ||
- | & | ||
- | history_aerosol = .true. | ||
- | / | ||
- | </ | ||
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- | Two more diagnostics are useful: | ||
- | * Enable estimates multiple calls to radiation which are necessary for effective radiative forcing estimates | ||
- | * Enable diagnostics for AEROCOM | ||
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- | To enable this, take the file cam/ | ||
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- | Change both preprocessor definitions to true | ||
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- | < | ||
- | #define AEROCOM | ||
- | #define AEROFFL | ||
- | </ | ||
- | |||
- | The AEROCOM-token turns on diagnostics needed for AEROCOM | ||
- | The AEROFFL-token tells the model to do additional radiation-diagnostics for aerosol indirect effect | ||
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- | ===Fields produced in monthly average files when running with budgets activated=== | ||
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- | Running with budgets activated will produce the following terms in the monthly output files: | ||
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- | ^ Output variable name ^ Meaning | ||
- | | SF{Tracer} | ||
- | | GS_{Tracer} | ||
- | | AQ_{Tracer} | ||
- | | {Tracer}_Mixnuc1 | ||
- | | {Tracer}_DDF | ||
- | | {Tracer}_SFWET | ||
- | | {Tracer}_condtend | ||
- | | {Tracer}_coagTend | ||
- | | DF_{Tracer} | ||
- | | WD_A_{Tracer} | ||
- | | {Tracer}_CLXF | ||
- | | {Tracer}_clcoagTend | ||
- | |||
- | 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 | ||
- | </ | ||
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- | More info on SO2 budgets (see / | ||
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- | GS_SO2 contains the SO2 budget terms for all that goes on in the chemistry-routine, | ||
- | 1) Gas phase chemistry, 2) Wet deposition, and 3) 3D-emissions.\\ | ||
- | Gas phase chemistry is both production from DMS (GS_DMS) and loss through OH (GL_OH) \\ | ||
- | For calculations of net loss, e.g. used to calculate SO2 life-times, we're interested in the \\ | ||
- | loss through OH from the chemistry-term (GL_OH).\\ | ||
- | GS_SO2 = GL_OH + SO2_CLXF - WD_A_SO2 - GS_DMS*64/ | ||
- | or \\ | ||
- | GL_OH = GS_SO2 - SO2_CLXF + WD_A_SO2 + GS_DMS*64/ | ||
- | |||
- | Estimating chemical loss w.r.t. S (instead of SO2 or DMS), for comparison with CAM4-Oslo numbers:\\ | ||
- | net chemial loss gas phase = (GS_SO2/ | ||
- | net chemical loss = net chemial loss gas phase + AQ_SO2/ | ||
- | |||
- | Finally, total net loss (used to calculate life-time = -load/(net loss), where load = cb_SO2/ | ||
- | net loss = \\ | ||
- | - WD_A_SO2/ | ||
- | - DF_SO2/ | ||
- | + AQ_SO2/ | ||
- | + (GS_SO2 - SO2_CLXF + WD_A_SO2)/ | ||
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- | ===Looking at the aerosol budgets (CAM-Oslo only) === | ||
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- | * Go to the directory models/ | ||
- | * Change the filename to use in the file budgets.ncl (" | ||
- | * Run the script budgets.sh to create a pdf-file (output.pdf) | ||
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- | ===Preparing output for AEROCOM === | ||
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- | To prepare output for aerocom, use the script located at **models/ | ||
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- | The script requires < | ||
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- | The script creates files named like | ||
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- | “aerocom3_< | ||
- | |||
- | < | ||
- | < | ||
- | < | ||
- | < | ||
- | < | ||
- | < | ||
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- | Note that VerticalCoordinateType is dependent on the variable!! It is not a question about " | ||
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- | The script copies files on norstore into | ||
- | **/ | ||