README -- Contents of pnoy_200106/
Bob Yantosca
bmy@io.harvard.edu
18 Dec 2003


Files:
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pnoy_nox_hno3.geos1.2x25      : Files containing production rates of PNOY 
pnoy_nox_hno3.geos3.2x25      :  [v/v/s] and concentrations of NOy species 
pnoy_nox_hno3.geos4.2x25      :  HNO3, O3, NO, and NO2 [v/v], for the GEOS-1,
pnoy_nox_hno3.geoss.2x25         GEOS-3, GEOS-4, and  GEOS-STRAT 2 x 2.5 grids

pnoy_nox_hno3.geoss.2x25.rvm  : File containing the same data as 
 			        "pnoy_nox_hno3.geoss.2x25", but recomputed
			        by Randall Martin for TPCORE flags 3,3,7
				for the GEOS-STRAT 2 x 2.5 grid.

pnoy_above_10mb.geos1.2x25    : File containing the same data as 
				"pnoy_nox_hno3.geos1.2x25", but at pressure-
			        altitudes above 10 hPa.  

All files are in binary punch format.


Source:
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The data was taken from the 2-D (lat, alt) stratospheric model of Hans 
Schnieder and Dylan Jones.  The original data, which comes in bins of
5 degrees latitude and on 36 pressure levels, is stored in the file:

	~bmy/archive/data/pnoy_200106/raw/PNOY.data

and was regridded to GEOS-CHEM 2 x 2.5 and 4 x 5 grids by the IDL code:

	~bmy/IDL/regrid/regridvh_noy.pro

Randall Martin (rvm@io.harvard.edu) at one point recomputed the P(NOy) and 
concentration data to correspond to TPCORE flags IORD=3, JORD=3, KORD=7, and 
stored the results in "pnoy_nox_hno3.geoss.2x25.rvm".

Qinbin Li (qli@io.harvard.edu) also collected P(NOy) data above 10 hPa,
which is stored in file: "pnoy_above_10mb.geos1.2x25"


Notes:
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(1) pnoy_nox_hno3.geos*.2x25* are read into GEOS-CHEM by routine "upbdflx_noy"
    of F90 module "upbdflx_mod.f".

(2) The data contained in pnoy_nox_hno3.geos*.2x25 is used to compute the
    stratospheric flux of NOy for the full chemistry simulation.

(3) There is a substantial amount of P(NOy) at altitudes higher than 10 hPa. 
    The GEOS-1 grid ends at 10 hPa, and so this production needs to be added 
    into the top layer of the model from the "pnoy_above_10mb.geos1.2x25" file.
    We don't have to do this for the GEOS-3 or GEOS-STRAT grids, since these
    grids extend to well higher than 10 hPa, and so the regridding process
    will capture the P(NOy) in the stratosphere.