README -- describes contents of MEGAN_200510 directory
24 Aug 2007
Bob Yantosca              and Philippe Le Sager
yantosca@seas.harvard.edu     plesager@seas.harvard.edu

Files:
======

MEGAN_AEF_ISOP.geos.1x1 -- MEGAN annual emission factors for ISOPRENE 
                           in bpch format on GEOS 1x1 grid

MEGAN_AEF_MBO.geos.1x1  -- MEGAN annual emission factors for METHYL 
                           BUTENOL in bpch format on GEOS 1x1 grid

MEGAN_AEF_MTP.geos.1x1  -- MEGAN annual emission factors for MONOTERPENES
   			   in bpch format on GEOS 1x1 grid

MEGAN_AEF_OVC.geos.1x1	-- MEGAN annual emission factors for OTHER VOC's
   			   in bpch format on GEOS 1x1 grid 

MEGAN_AEF_ISOP.updated_200708.geos.1x1 
	                -- More recent MEGAN annual emission factors for 
                           ISOPRENE in bpch format on GEOS 1x1 grid.  This
                           file supercedes the MEGAN_AEF_ISOP.geos.1x1 file.

                           Alex Guenther says that we should be using these
                           new MEGAN AEF's instead of the older ones, which
                           he says are now obsolete.

			   This file was prepared by Dylan Millet.

References:
=========== 
(1) Guenther, A., T. Karl, P. Harley, C. Wiedinmyer, P.I. Palmer, and C. 
     Geron (2006), Estimates of global terrestrial isoprene emissions using 
     MEGAN (Model of Emissions of Gases and Aerosols from Nature), 
     Atmospheric Chemistry and Physics, 6, 3181-3210.

(2) MEGAN website: http://bai.acd.ucar.edu/Megan/index.shtml 

                          
NOTES: 
(1) Files may be GZIPPED to save space!
(2) Data were provided to us by May Fu (tmf@io.as.harvard.edu)
(3) Annual emission factors in these files have units of [ug C/m2/hr].
     These get converted to [kg C] in GEOS-Chem.