noresm:aerosolbudgetsnoresm2

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noresm:aerosolbudgetsnoresm2 [2015-03-10 07:39:01]
alfg 		noresm:aerosolbudgetsnoresm2 [2022-05-31 09:29:32] (current)
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 +===Configuring a run with more aerosol diagnostics in (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 :  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 : 
  
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 </file> </file>
  
-This will produce the following terms in the monthly output files: +Two more diagnostics are useful: 
 +  * Enable estimates multiple calls to radiation which are necessary for effective radiative forcing estimates 
 +  * Enable diagnostics for AEROCOM 
 + 
 + 
 +To enable this, take the file cam/src/physics/cam_oslo$ vim preprocessorDefinitions.h and copy it to your SourceMods/src.cam folder 
 + 
 +Change both preprocessor definitions to true 
 + 
 +<file> 
 +#define AEROCOM 
 +#define AEROFFL 
 +</file> 
 + 
 +The AEROCOM-token turns on diagnostics needed for AEROCOM 
 +The AEROFFL-token tells the model to do additional radiation-diagnostics for aerosol indirect effect 
 + 
 +===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| 
 +| {Tracer}_clcoagTend     | loss of tracer due to coagulation with cloud droplets  | 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):  
 +<file> 
 +ncap2 -O -s GS_ONLY_SO2=GS_SO2-WD_A_SO2-SO2_CLXF infile.nc outfile.nc 
 +</file> 
 + 
 +More info on SO2 budgets (see /models/atm/cam/tools/diagnostics/ncl/ModIvsModII/ for scripts with info on all tracers):  
 + 
 +GS_SO2 contains the SO2 budget terms for all that goes on in the chemistry-routine, which is \\ 
 +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*64/62 \\ 
 +or \\ 
 +GL_OH = GS_SO2 - SO2_CLXF + WD_A_SO2 + GS_DMS*64/62 \\ 
 + 
 +Estimating chemical loss w.r.t. S (instead of SO2 or DMS), for comparison with CAM4-Oslo numbers:\\ 
 +net chemial loss gas phase = (GS_SO2/1.998 - SO2_CLXF + WD_A_SO2)/1.998  + GS_DMS/1.938 \\ 
 +net chemical loss = net chemial loss gas phase + AQ_SO2/1.998 \\ 
 + 
 +Finally, total net loss (used to calculate life-time = -load/(net loss), where load = cb_SO2/1.998):\\ 
 +net loss = \\ 
 +- WD_A_SO2/1.998    ;wet deposition in kg/m2/sec (positive in output file) \\ 
 +- DF_SO2/1.998      ;dry deposition in kg/m2/sec (positive in output file) \\ 
 ++ AQ_SO2/1.998      ;wet phase production of SO4 in kg/m2/ses (negative in output file) \\ 
 ++ (GS_SO2 - SO2_CLXF + WD_A_SO2)/1.998 + GS_DMS/1.938  ; net chemical loss gas phase \\ 
 + 
 +===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) 
 + 
 +===Making ncl plots of often used aerosol and cloud fields, including ERFs, for two model versions (CAM-Oslo only) === 
 + 
 +  * Make a local copy (on Linux) of the directory models/atm/cam/tools/diagnostics/ncl/ModIvsModII 
 +  * Assuming that you have produced output data from 4 simulations: two different model versions, each with PD and PI emissions, and all run with #define AEROCOM & AEROFFL:    
 +  * In ModIvsModII.csh (note: read the header info): 
 +  * - edit model info for the first model (shown to the left in the plots): modelI = CAM4-Oslo or modelI = CAM5-Oslo ? 
 +  * - provide paths and partial file names of the model data (PD and PI) for Model I (CAM4-Oslo or CAM5-Oslo) and Model II (must be CAM5-Oslo) 
 +  * - choose desired plot format (plotf=ps, eps, pdf or png) 
 +  * Run the script: ./ModIvsModII.csh 
 +  * Furthermore, to display the plots in an organized form by use of a web browser (only possible if the chosen plot format is png):     
 +  * - download htm template files from ftp://ftp.met.no/projects/noresmatm/upload/NorESM2Diagnostics/ModIvsModII/htm-templates/ 
 +  * - edit general model info (only) in ModIvsModII.htm, and manually cut and paste the mass budget numbers from the script output into this file  
 +  * - copy all png (plots) and htm files to the desired output (common) directory 
 +  * - open ModIvsModII.htm in your browser: hyper-links to all other htm files, including plots, are found here 
 +  * Example: ftp://ftp.met.no/projects/noresmatm/upload/NorESM2Diagnostics/ModIvsModII/revision610inclSOA-Nudged_1984-12to1985-11_vs_CAM4-Oslo/ModIvsModII.htm 
 + 
 +===Preparing output for AEROCOM analysis=== 
 + 
 +To prepare output so that it is processed automatically by the aerocom tools, use the script located at **models/atm/cam/tools/aerocom/** in the svn repository. The script prepares files such that the idl aerocom tools prepare plots for the aerocom webinterface: 
 +[[http://aerocom.met.no/cgi-bin/aerocom/surfobs_annualrs.pl?PROJECT=NorESM&MODELLIST=NorESM&FULL=explicit&INFO=nohover&PERFORMANCE=ind&YEARFILTER=ALLYEARS&PSFILTER=ALLVARS&Type0=ZONALOBS&Ref0=AERONETSun&Run0=CAM53-Oslo_r773bNudge_151215AG_PD_DMS_733b&Parameter0=OD550_AER&Station0=WORLD&Year0=an9999&Period0=mALLYEAR | URL link to NorESM on AeroCom webinterface]] 
 + 
 +The script requires <ModelName>_<ExperimentName> and <Period> as input. 
 + 
 +<Period>: for a climatological average and run choose 9999 , for nudged simulations choose the year of the meteorology 
 + 
 +<ModelName>_<ExperimentName>: is the dataset identifier under which the plots appear on the AeroCom webinterface \\  
 +of the form NorESM-CAM5_svn{RevisionNumber}_YYMMDD{initials}_Freetext. \\ 
 +Example: "NorESM-CAM5_svn1094_151201AG_CMIP6endelig" \\ 
 +Initials AG: Alf Grini, AK: Alf Kirkevåg, DO: Dirk Olivie... 
 + 
 +The script creates files named like 
 + 
 +“aerocom3_<ModelName>_<ExperimentName>_<VariableName>_<VerticalCoordinateType>_<Period>_<Frequency>.nc” 
 + 
 +<ModelName> ⇒ eg NorESM-CAM53 \\ 
 +<ExperimentName> ⇒ svn{RevisionNumber}_YYMMDD{initials}_Freetext \\ 
 +<VariableName> ⇒ aerocom variable names \\ 
 +<VerticalCoordinateType> ⇒ “Surface”, “Column”, “ModelLevel”, “SurfaceAtStations”, “ModelLevelAtStations” \\ 
 +<Period> ⇒ eg “2008”, “2010”, "9999" \\ 
 +<Frequency> ⇒ “timeinvariant”,”hourly”, “daily”, “monthly”, “sat1000”, “sat1330”, “sat2200”, “sat0130” \\
  
-^ Output variable name             ^ Meaning                      ^ Comment               ^ +Note that VerticalCoordinateType is dependent on the variable!! It is not a question about "vertical coordinate type used in model simulations"!
-| 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                                    |                                | +
-| {Tracer}_condtend                  | loss/production in condensation/nuclation              | (CAM-Oslo only)                | +
-| {Tracer}_coagTend                  | loss/production in coagulation                         | (CAM-Oslo only)                |+
  
 +The script copies files on norstore into
 +**/projects/NS2345K/CAM-Oslo/DO_AEROCOM/<ModelName>_<ExperimentName>/renamed/**
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