EPTOMS data for PEM-Tropics B and gif images of Pacific region
==============================================================
Martin Schultz, Harvard University, 23 April 1999


The data was downloaded as ASCII files from http://jwocky.gsfc.nasa.gov
(daily files of Earth Probe TOMS) for the time period 04 March - 19 April 1999.
An IDL program is available to read these files. The data has been plotted
with the GAMAP (Global Atmospheric Modeling Analysis Package) tool developed
here at Harvard and gif images were created that show the Pacific region with
enhanced resolution between 220 and 350 DU.

Tropical tropospheric ozone images were downloaded as 3 day averages from
http://metosrv2.umd.edu/~tropo .


work note:
----------
call to read EP toms data files

read_eptoms

(this will create datainfo structures for use with GAMAP. You can also add
a data parameter to return the 2D array of EP TOMS data)

call to GAMAP:

myct,27,ncol=32,bot=20,range=[0.15,0.8]
c_lev = [150,200,220,230,240,250,260,270,280,290,300,310,320,330,340,350,375,400]
gamap,/nofile,c_lev=c_lev,c_col=[0,17,2*indgen(21)+18],/cbar,mlinethick=2,  $
    ncolors=32,bottom=18,cbmin=220,cbmax=400,div=10,frame0=4

(the frame0 keyword is for March only)

Enter the following ranges:
records : ad lib.
level: 1 1
longitude: 90 -60
latitude : -50 50
no averaging (0)
plot mode 2 (filled contours)
save gif files: Y
file name: eptoms9903%NN%.gif  (or 9904%NN% for April)