README -- Describes contents of HEMCO/CO2/v2014-09/FOSSIL
04 Sep 2015
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu


Overview:
===============================================================================

This data directory contains updated annual and monthly fossil fuel CO2 
emissions and scale factors from different sources as described below.


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

CDIAC_CO2.monthly.generic.1x1.nc

 -- Monthly Carbon Dioxide Information Analysis Center (CDIAC) emissions 
    version 2014 (no internatonal bunker fuels) obtained from R.J. Andres

    Resolution  : GENERIC 1 x 1 grid (360 x 180 boxes)
    Units       : kg/m2/s
    Timestamps  : Monthly, 2000/01 thru 2014/12
    Compression : Level 1 (e.g. nccopy -d1)

    %%%%% NOTE from Ray Nassar (04 Sep 2015) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    1) CDIAC gridded fossil fuel emissions v2014 for 1980-2014.  I originally 
    said that this file would follow very soon after the May CO2 update, but 
    it took Bob Andres a long time to get the data ready since he was busy and 
    I guess it was more labour intensive for him than I initially realized.  
    (Note, although I simply call this “CDIAC”, CDIAC v2014 actually ends in 
    2011 and for 2012-2014, I have scaled CDIAC year 2011 based on the BP 
    Statistical Review of World Energy.)
    %%%%% NOTE from Ray Nassar (04 Sep 2015) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


ODIAC_CO2.monthly.generic.1x1.nc

 -- Monthly Open-source Data Inventory for Anthropogenic CO2 (ODIAC) emissions 
    version 2013 (no internatonal bunker fuels) obtained directly from Tom Oda

    Resolution  : GENERIC 1 x 1 grid (360 x 180 boxes)
    Units       : kg/m2/s
    Timestamps  : Monthly, 2000/01 thru 2014/12
    Compression : Level 1 (e.g. nccopy -d1)


Aviation_SurfCorr_SclFac.1x1.nc

 -- Domestic Aviation Surface Correction Unitless Scale Factors to remove the 

    Resolution  : GENERIC 1 x 1 grid (360 x 180 boxes)
    Units       : 1 (aka "unitless")
    Timestamps  : 2004/01/01
    Compression : Level 1 (e.g. nccopy -d1)


TIMES_diurnal_scale_factors.nc

 -- Temporal Improvements for Modeling Emissions (TIMES) diurnal scale factors
    from Ray Nassar 

    Resolution  : GENERIC 0.25 x 0.25 grid (1440 x 720 boxes)
    Units       : 1 (aka "unitless")
    Timestamps  : Hourly, 2006/01/01 00 GMT thru 2006/01/01 24:00 GMT
    Compression : Level 1 (e.g. nccopy -d1)


TIMES_weekly_scale_factors.nc

 -- Temporal Improvements for Modeling Emissions (TIMES) weekly scale factors
    from Ray Nassar 

    Resolution  : GENERIC 0.25 x 0.25 grid (1440 x 720 boxes)
    Units       : 1 (aka "unitless")
    Timestamps  : Daily, 2006/01/01 thru 2006/01/07
    Compression : Level 1 (e.g. nccopy -d1)


References:
===============================================================================

CDIAC 

Andres. R.J., J.S Gregg, L. Losey, G. Marland, T.A. Boden (2011), Montly,
  global emissions of carbon dioxide from fossil fuel consumption, Tellus 63B,
  309-327.

ODIAC

Oda, T. and S. Maksyutov (2011), A very high-resolution (1 km x 1 km) global 
  fossil fuel CO2 emission inventory derived using a point source database and 
  satellite observations of nighttime lights, Atmos. Chem. Phys., 11, 543?556.

TIMES

Nassar, R., L. Napier-Linton, K.R. Gurney, R.J. Andres, T. Oda, F.R. Vogel, 
  F. Deng (2013), Improving the temporal and spatial distribution of CO2 
  emissions from global fossil fuel emission datasets, Journal of Geophysical 
  Research: Atmospheres, 118, 917-933, doi:10.1029/2012JD018196.

Aviation

Kim, B., Fleming, G., Balasubramanian, S., Malwitz, A., Lee, J., Waitz, I., 
  Klima, K., Locke, M., Holsclaw, C., Morales, A., McQueen, E., and Gillette, 
  W.: System for assessing Aviation's Global Emissions (SAGE) Federal Aviation 
  Administration Office of Environment and Energy, Version 1.5, Global Aviation
  Emissions Inventories for 2000 through 2004 (FAA-EE-2005-02), September 2005.

Olsen, S.C., D.J. Weubbles, B. Owen (2013) Comparison of global 3-D aviation 
  datasets, Atmos. Chem. Phys., 13, 429?441, doi:10.5194/acp-13-429-2013.

Simone, N., M. Stettler, S. Eastham, S. Barrett, Aviation Emissions Inventory
  Code (AEIC) User Manual (R1), Laboratory for Aviation and the Environment, 
  Massachusetts Institute of Technology, January 2013, Report No:
  LAE-2013-001-N, www.LAE.MIT.edu.

Also see our wiki page: http://wiki.geos-chem.org/CO2_simulation