emis_wrf returns a dataframes with columns lat, long, id, pollutants, local time and GMT time. This dataframe has the proper format to be used with WRF assimilation system: "ASimilation System 4 WRF (AS4WRF Vera-Vala et al (2016))

emis_wrf(sdf, nr = 1, dmyhm, tz, crs = 4326, islist, utc)



Gridded emissions, which can be a SpatialPolygonsDataFrame, or a list of SpatialPolygonsDataFrame, or a sf object of "POLYGON". The user must enter a list with 36 SpatialPolygonsDataFrame with emissions for the mechanism CBMZ.


Number of repetitions of the emissions period


String indicating Day Month Year Hour and Minute in the format "d-m-Y H:M" e.g.: "01-05-2014 00:00" It represents the time of the first hour of emissions in Local Time


Time zone as required in for function as.POSIXct


Coordinate reference system, e.g: "+init=epsg:4326". Used to transform the coordinates of the output


logical value to indicate if sdf is a list or not




data-frame of gridded emissions (mass)/h. Remember convert to mol.


The reference of the emissions assimilation system is Vara-Vela, A., Andrade, M. F., Kumar, P., Ynoue, R. Y., and Munoz, A. G.: Impact of vehicular emissions on the formation of fine particles in the Sao Paulo Metropolitan Area: a numerical study with the WRF-Chem model, Atmos. Chem. Phys., 16, 777-797, doi:10.5194/acp-16-777-2016, 2016. A good website with timezones is http://www.timezoneconverter.com/cgi-bin/tzc The crs is the same as used by sp package It returns a dataframe with id,, long, lat, pollutants, time_lt, time_utc and day-UTC-hour (dutch) The pollutants for the CBMZ are: e_so2, e_no, e_ald, e_hcho, e_ora2, e_nh3 e_hc3, e_hc5, e_hc8, e_eth, e_co, e_ol2, e_olt, e_oli, e_tol, e_xyl, e_ket e_csl, e_iso, e_no2, e_ch3oh, e_c2h5oh, e_pm25i, e_pm25j, e_so4i, e_so4j e_no3i, e_no3j, e_orgi, e_orgj, e_eci, e_ecj, e_so4c, e_no3c, e_orgc, e_ecc

See also


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