WRF-Chem 3.9.1.1 Emissions Guide - National Oceanic and ...

1 WRF-Chem Emissions Guide Table of Contents Introduction2 The WRF-Chem Emissions utilities overview2 Placement of chemical-emission input data files2 Preparation of anthropogenic Emissions for use with WRF-Chem5 Using the global- Emissions data set5 Seting-up prep_chem_sources6 Compiling the prep_chem_sources code7 Running prep_chem_sources utility with WRF-Chem7 The 4-km resolution NEI data set (2005 NEI Emissions data for USA only)9 Anthropogenic- Emissions construction methodology for WRF-Chem9 Construction of an anthropogenic- Emissions -inventory conversion table10 Additional details for running with the NEI-05 anthropogenic- Emissions data set14 The anthro-emiss utiltiy17 Preparation of biogenic Emissions for use with WRF-Chem19 No biogenic emissions19 Guenther biogenic emissions19 BEIS biogenic emissions19 MEGAN biogenic emissions21 Compiling MEGAN preprocessor22 Preprocessing MEGAN data files22 Running WRF-Chem with MEGAN23 Preparation of biomass burning emissions25 Using prep_chem_sources for biomass burning emissions25 Using FINN biomass burning emissions27 Preparation of volcanic Emissions for use with WRF-Chem28 Volcanic ash emissions28 Volcanic SO 2 degassing

2 Emissions29 Preparation of tracer Emissions for use with WRF-Chem30 The CO 2 tracer option31 The Greenhouse Gas tracer option31 Boundary conditions with WRF-Chem32 The wrfchembc utility32 The mozbc utility33 Including an upper boundary boundary condition for chemical species33 Converting binary intermediate file to a WRF-Chem data file35 Binary data file format36 Building the WRF-Chemistry Emissions conversion code37 Namelist settings for running convert_emiss37 Summary40 WRF-Chem and utility program related publications40 1 2 WRF-Chem Emissions Guide WRF-Chem Overview Table of Contents Introduction2 The WRF-Chem Emissions utilities overview2 Introduction TheWRF-ChemEmissionsGuideisdesignedtopro videthereaderwith informationspecifictothepartoftheWRFmode lrelatedtogenerationofemissions (Grelletal.)

3 ,2005)andprimarilyfocusonissuesrelatedto generatingchemicalinputdata ,thereaderisreferred to the WRF-Chem User s Guide . The WRF-Chem Emissions utilities overview Thefollowingfigureshowstheflowchartforth eWRF-Chemmodelingsystem. IntheWRF-Chemmodelthereareseveralwaysinw hichgriddedchemicaldatacanbe ( ,databaseduponlanduseage,or vegetation) temporally( ,anthropogenicemissions)isreadintothesim ulationwhenrunningthe WRF model. Atthistimethereisnosingletoolthatwillcon structthechemistryemissions inputdatasetsforanydomainandanychemicalm echanismthatisselected. Thisplaces therequirementuponyou,theWRF-Chemmodelus er,toconstructtheemissions ,several programsanddatasetsareprovidedbytheWRF-C hemusercommunitythatcanhelpto toknowthepreferreddomainlocationandchemi stryoptionsthatwillbeusedinthe will become clear.

4 Placement of chemical-emission input data files TheWRF-Chememissionsinputdatafilesneedto belocatedinthe WRFV3/ andlinkthefile(s)theWRFV3/test/em_realdi rectory,sincetheywillbeusedoverand over again. Others might leave the Emissions input files in the various directories where 3 4 5 thefilestotheWRFV3/ ,once theemissionfileconstructioniscompleted,t heWRF-Chemcodeexpectstheemissions data files to be located in the WRFV3/test/em_real directory. 6 Chapter 2: Generation of Anthropogenic Emissions Data Files Table of Contents Preparation of anthropogenic Emissions for use with WRF-Chem5 Using the global- Emissions data set5 Seting-up prep_chem_sources6 Compiling the prep_chem_sources code7 Running prep_chem_sources utility with WRF-Chem7 The 4-km resolution NEI data set (2005 NEI Emissions data for USA only)

5 9 Anthropogenic- Emissions construction methodology for WRF-Chem9 Construction of an anthropogenic- Emissions -inventory conversion table10 Additional details for running with the NEI-05 anthropogenic- Emissions data set14 The anthro-emiss utiltiy17 Preparation of anthropogenic Emissions for use with WRF-Chem Programsthatcanbeusedtogenerateanthropog enicemissionsforaWRF-Chem domainlocationisknownalongwiththechemist ryoptionsthatwillbeusedinthe "raw"anthropogenic-emissionsdatasetdescr ibednextcanbeusedifthe domainis(1)locatedeitheranywhereovertheg lobe,or(2)overthe48contiguousstates methodologyforconstructingyourownanthrop ogenic-emissionsdatasetusingthe global anthropogenic Emissions data sets. Using the global- Emissions data set Theuseofaglobal-emissionsdatasetwithWRF- Chemisprobablythemost TROpospheric(RETRO)chemicalcompositionov erthepast40years ( )andEmissionDatabaseforGlobalAtmospheric Research (EDGAR)( ).

6 BothRETROandEDGAR provide globalannualemissionsforseveralgreenhous egases( ,CO 2 ,CH 4andN 2 O)aswellas some precursor gases on a . degree (RETRO) or a 1x1 degree (EDGAR) grid. Asimplegrid-mappingprogramhasbeenmadeava ilabletoWRF-Chemusers. Thisprogram,calledprep_chem_sources,wasd evelopedatCPTEC,Brazilandis availabletoWRF-Chemusers(Freitasetal.,20 11).Theprogramwillmaptheglobal anthropogenicemissionsdatatoaWRF-forecas tdomainusingaMercator,polar programandassociatedRETRO/EDGAR emissionsisavailablefromtheWRF-Chemftp 7 site( ).Aftertheemissionsare mappedtoWRFdomain,thedataisoutputforRADM 2speciationintobinarydatafile. Theintermediatebinarydatafilecanthenbeco nvertedintoaWRFinputdatafileusing the convert utility program discussed in chapter 9.

7 Seting-up prep_chem_sources In this section the set-up and running of the prep_chem_sources utiltity will be discussed. The code can be obtained from the WRF-Chem ftp site ( ). After untaring the code it can be seen that the code exists in several subdirectories. These subdirectories are: bin -- Scripts for maintenance, execution, compilation src -- Source codes aux_src -- Auxiliary codes There are several libraries that are not normally needed to compile WRF that are needed to compile prep_chem_sources. These libraries are: JPEG distributionrelease6b( ).Youmaydownloadthesoftwarefrom ( ) the site. ( , ) software from ( ).Youmaydownloadthesoftwarefrom WhencompilingPREP-CHEM-SRCcodesonaLinuxs ystemmakesurethenetCDF andHDFlibraryhasbeeninstalledusingthesam eFORTRANandCcompilersthatare ,youwillprobablyneedtoconfiguretheHDFlib rarybuild using command lines.

8 /configure --prefix=path_hdf5 \ --with-jpeg=path_jpeg \ --with-zlib=path_zlib \ --disable-netcdf as these are what is often used with WRF. And then to compile the HDF library one uses the make command: make && make install 8 Compiling the prep_chem_sources code Tocompiletheprep_chem_sourcescodeoneneed stochangedirectorytothe bin/build directory cd bin/build <yourcompiler>make ( ,byte swapping)asusedfortheWRF-Chemcodecompila tionotherwisethecodemightnot compileorthebinaryintermediateoutputwill beunreadablebytheWRF-Chemconvert ,oncethemakeoptionincludefileisconfigure dforyourcomputer system,themakecommandisissuedwiththecomp ileroption( ,PGI)andthe chemistry option (ie.)

9 , RADM_WRF_FIM) listed in the command line make OPT= CHEM=RADM_WRF_FIM And with this command the code should compile and the file being placed in the prep_chem_source/bin directory. Running prep_chem_sources utility with WRF-Chem Toruntheprep_chem_sourcesexecutableonemu stfirsteditthenamelistinput projection settings used in the WPS input file That is: NINEST=i_parent_start, NJNEST=j_parent_start, POLELAT=ref_lat, POLELON=ref_lon, STDLAT1=truelat1, STDLAT2=truelat2. Theprep_chem_sourcessettingsCENTLATandCE NTLON arenotusedforWRF,but are most often the latitude and longitude of the central grid point for your domain. Aftersettingtheprep_chem_sourcesnamelist onecanrunthe PREP-CHEM-SRCexecutable( , )for biogenic-emissionsfile( ),thebiomassburning-emissionsfile(ending ),andtheGOCART backgrounddata( ).

10 Whilea typicalrunconfigurationwillproducealloft heseemissionsfiles,thefocusinthissection 9 beenrunthebinaryintermediatefilesitprodu cesforWRF-Chemwillneedtobe chapter8ofthisGuidesotherunningofthecode fortheanthropogenicemissionswill be outlined next. Foreachsimulationthatyouaregoingtousethe globalemissionsdata,youneed , startandendtimesettoyouryear,month,day,a ndstarthourgenerateawrfinput_d01 ( , WRFV3/test/em_real) with commands similar to the following: ln -sf ../../WRFV3/test/em_real/wrf_gocart_back g ln -sf ../../WRFV3/test/em_real/emissopt3_d01 ln -sf ../../WRFV3/test/em_real/emissfire_d01 ln -sf.