README -- describes contents of MASAGE_NH3/v2015-02 directory
18 Apr 2018
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu


Overview
===============================================================================

MASAGE_NH3 is an inventory of agricultural NH3 emissions developed by Fabien
Paulot.  A full description is given in this publication:

  Paulot F., Jacob, D.J., Pinder R.W., Bash J.O., Travis, K., Henze D.K., 
  "Ammonia emissions in the United States, Europe, and China derived by 
  high-resolution inversion of ammonium wet deposition data: Interpretation 
  with a new agricultural emissions inventory (MASAGE_NH3)", J. Geophys. Res., 
  119, 4,343-4,364, 2014. 

  For PDF see this link:
  http://acmg.seas.harvard.edu/publications/2014/paulot2014_emissions.pdf


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

masage_nh3_2006.2x25.nc 

  -- File containing MASAGE_NH3 emissions for various agricultural sectors, 
     as described in the Paulot et al 2014 paper cited above.  

     This data file contains monthly mean NH3 emissions placed on the 
     GEOS-Chem 2 x 2.5 horizontal grid.  The base year of emissions is 2006.  
     Units of NH3 emissions are given as kg NH3 m-2 s-1.  Level 1 compression
     (aka "nccopy -d1") has been applied.

     If we convert these emissions from kg NH3 m-2 s-1 to Gg N (i.e. multiply
     by the factor 14/17/1e6) and sum over all 12 months, we can directly 
     compare to the global totals listed in Table A1 of Paulot et al 2014:

     EMISSION TOTALS, compare to Fabien's table A1
     COTTON               [kg N] 731.352
     FRUITS_VEGETABLES    [kg N] 820.576
     GROUNDNUT            [kg N] 80.8127
     MAIZE                [kg N] 1743.05
     OIL_PALM             [kg N] 112.432
     OTHER_CEREALS        [kg N] 122.545
     OTHER_CEREALS_WINTER [kg N] 336.14
     OTHER_CROPS          [kg N] 987.441
     PULSES               [kg N] 44.6072
     RAPESEED             [kg N] 155.898
     EARLY_RICE           [kg N] 554.186
     LATE_RICE            [kg N] 323.54
     SOYBEANS             [kg N] 85.5041
     SUGAR_CANE           [kg N] 428.529
     TEMPERATE_ROOTS      [kg N] 459.644
     TROPICAL_CEREALS     [kg N] 92.0221
     TROPICAL_ROOTS       [kg N] 160.903
     WHEAT                [kg N] 423.498
     WHEAT_WINTER         [kg N] 1606.97
     BEEF_CROP            [kg N] 1998.11
     BEEF_HOUSING         [kg N] 5900.38
     BEEF_PASTURE         [kg N] 1672.35
     BEEF_STORAGE         [kg N] 549.203
     BUFFALOES_EMISSION   [kg N] 1525.14
     DAIRY_CROP           [kg N] 685.603
     DAIRY_HOUSING        [kg N] 1112.69
     DAIRY_PASTURE        [kg N] 668.778
     DAIRY_STORAGE        [kg N] 811.267
     GOATS_EMISSION       [kg N] 690.562
     PORK_CROP            [kg N] 775.642
     PORK_HOUSING         [kg N] 2055.58
     PORK_PASTURE         [kg N] 608.831
     PORK_STORAGE         [kg N] 680.933
     POULTRY_CROP         [kg N] 928.715
     POULTRY_HOUSING      [kg N] 2186.11
     POULTRY_PASTURE      [kg N] 546.004
     POULTRY_STORAGE      [kg N] 323.869
     SHEEP_EMISSION       [kg N] 967.568


     Resolution  : GEOS-Chem 2 x 2.5 grid (144 x 91 boxes)
     Units       : kg m-2 s-1
     Timestamp   : 2006/01/01
     Compression : Level 1 (e.g. nccopy -d1)
     Chunking    : nccopy -c lon/144,lat/91,time/1