README -- Describes contents of CH4/v2022-11 folder
28 Nov 2022
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu

Files:
===============================================================================

EDGARv6/

 -- EDGAR v6.0 emissions grid maps (0.1x0.1) in kg CH4/m2/s by sector.

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%% This folder contains updated EDGAR v6.0 emission files, correcting %%%
    %%% a bug in the timestamp of files in HEMCO/CH4/v2022-01/EDGARv6/.    %%%
    %%%                                                                    %%%
    %%% See https://github.com/geoschem/geos-chem/issues/1484 for details. %%%
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 -- EDGAR v6 reference: https://edgar.jrc.ec.europa.eu/dataset_ghg60

    Resolution  : 0.1 deg lat x 0.1 deg lon (1800 x 3600 boxes)
    Units       : molec cm-2 s-1
    Timestamp   : 2000-2018/01-12
    Compression : Level 1 (e.g. nccopy -d1)
    Chunking    : nccopy -c lon/3600,lat/1800,time/


GEPA/GEPA_Annual.nc
     GEPA_Monthly.nc
     GEPA_Daily.nc
     
 -- Gridded EPA methane emissions; various sectors
    (cf Maasakkers et al. 2016; http://doi.org/10.1021/acs.est.6b02878)

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%% NOTE: These files contain the same data as in ../v2017-10/GEPA,    %%%
    %%% but were edited to adhere to the COARDS netCDF conventions.        %%%
    %%% This was necessary in order for these files to be read by GCHP.    %%%
    %%%                                                                    %%%
    %%% See https://github.com/geoschem/geos-chem/issues/1528 for details. %%%
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    Resolution  : 0.1 deg lat x 0.1 deg lon (1800 x 3600 boxes)
    Units       : molec cm-2 s-1
    Timestamp   : 2012/01
    Compression : Level 1 (e.g. nccopy -d1)
    Chunking    : nccopy -c lon/3600,lat/1800,time/1
    Source : https://www.epa.gov/ghgemissions/gridded-2012-methane-emissions


Lakes/

 -- Monthly mean methane emissions from lakes 
    (cf. Maasakkers et al. 2019, https://doi.org/10.5194/acp-19-7859-2019)

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%% NOTE: This folder contains the same files previously in            %%%
    %%% HEMCO/CH4/v2017-10/Lakes, but now with the correct time units.     %%%
    %%%                                                                    %%%
    %%% See https://github.com/geoschem/geos-chem/issues/1523 for details. %%%
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    Resolution  : 0.1 deg lat x 0.1 deg lon (1800 x 3600 boxes)
    Units       : molec cm-2 s-1
    Timestamp   : 2009-2015/01-12
    Compression : Level 4 (e.g. nccopy -d4)
    Chunking    : nccopy -c lon/3600,lat/1800,time/12


Scarpelli_Mexico/
     
 -- CH4 emissions over Mexico 
    (cf. Scarpelli et al 2020; https://doi.org/10.1088/1748-9326/abb42b)

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%% NOTE: These files contain the same data as in ../v2017-10/GEPA,    %%%
    %%% but were edited to adhere to the COARDS netCDF conventions.        %%%
    %%% This was necessary in order for these files to be read by GCHP.    %%%
    %%%                                                                    %%%
    %%% See https://github.com/geoschem/geos-chem/issues/1528 for details. %%%
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    Resolution  : 0.1 deg lat x 0.1 deg lon (250 x 350 boxes)
    Units       : molec cm-2 s-1
    Timestamp   : 2015/01
    Compression : Level 1 (e.g. nccopy -d1)
    Chunking    : nccopy -c lon/350,lat/250,time/1

4x5/

 -- Contains the files gmi.ch4loss.geos5_47L.4x5.nc and termites.geos.4x5.nc.

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%% NOTE: These files contains the same data as in ../2014-09/4x5/,    %%%
    %%% but the "lon" variables have been converted from type "int" to     %%%
    %%% type "float".  This was necessary in order for these files to be   %%%
    %%% read in by GCHP.                                                   %%%
    %%%                                                                    %%%
    %%% See: https://github.com/geoschem/geos-chem/issues/1527 for details %%%
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    Resolution  : 4 deg lat x 5 deg lon (1800 x 3600 boxes)
    Units       : s-1
    Timestamp   : 1985-01-01 thru 1985-12-0101-12
    Compression : Level 1 (e.g. nccopy -d1)
    Chunking    : nccopy -c lon/3600,lat/1800,lev/1,time/1