Shengpan: I went ahead and ran the tgcm processor to calculate the OH emission using Sam Maklhouf's code. There are now 4 more files on ftp.hao.ucar.edu in /pub/foster: total 4560 -rw-r--r-- 1 foster ftp 455040 Apr 5 11:45 shengpan3.eq.cgm -rw-r--r-- 1 foster ftp 490236 Apr 5 11:45 shengpan3.eq.dat -rw-r--r-- 1 foster ftp 430560 Apr 5 11:55 shengpan3.sol.cgm -rw-r--r-- 1 foster ftp 490236 Apr 5 11:55 shengpan3.sol.dat -rw-r--r-- 1 foster ftp 89280 Apr 6 11:50 shengpan_oh83.eq.cgm -rw-r--r-- 1 foster ftp 109404 Apr 6 11:50 shengpan_oh83.eq.dat -rw-r--r-- 1 foster ftp 89280 Apr 6 11:50 shengpan_oh83.sol.cgm -rw-r--r-- 1 foster ftp 109404 Apr 6 11:50 shengpan_oh83.sol.dat the *oh83* files contain Sam's OH-83 emissions at latitudes 2.5, 17.5, and 42.5, at the 75-110km height scale only (it is not available in pressure coordinates at this time). I'll also attach the main part of Sam's ohrad.f code that was used. --Ben