Ray:

I have put new mod decks for timesgcm.nmc in your times directory.
These two files (timesgcm.nmc.mods and timesgcm.nmc.mods1) now
have the mods for secondary histories. (I have saved the original
mod decks as timesgcm.nmc.presech.mods and timesgcm.nmc.presech.mods1.)

To write secondary histories add the following to the lexical reads:

C
C Secondary histories (comment all SECxxxx out if sec hist not needed)
C (these histories contain a max of 29 fields at the current time step)
C (they can be used with post-model processors, but cannot be used to
C  restart the model)
C
C SECOUT = mss secondary history output volumes
C SECHIST = disk write frequency of secondary histories (day:hr:min)
C SECSAVE = mss write frequency of secondary history files (day:hr:min)
C SECSTART,STOP = start,stop times for writing secondary histories 
C   (day:hr:min)
C
 SECOUT = 'FOSTER','SECTST','SECNMC1','FOSTER','SECTST','SECNMC2',
          'FOSTER','SECTST','SECNMC3','FOSTER','SECTST','SECNMC4',
          'FOSTER','SECTST','SECNMC5'
 SECHIST = 0,0,10
 SECSAVE = 0,0,30
 SECSTART = 17,13,0
 SECSTOP = 17,14,0
C
C SECFLDS = set each field to be saved on secondary histories to 1
C (The number of selected fields will influence number of histories 
C  that will fill a volume, however 4 volumes (SECOUT) will always 
C  be enough for 24 secondary histories)
C
C          tn un vn o2 ox n4s noz co co2 h2o h2 hox o+ ch4 o21d
 SECFLDS =  0, 1, 1, 0, 1,  1,  1, 1,  1,  1, 1,  1, 1,  1,   1,
C          no2  no o3  o1 oh ho2 h n2d ti te ne o2+  w  z
             0,  0, 0,  1, 0,  1,1,  1, 1, 1, 1,  1, 1, 1

SECOUT, SECHIST, SECSAVE, SECSTART and SECSTOP are analogous to 
OUTPUT, HIST, SAVE, START, and STOP, and have most of the same
restrictions. As we discussed, t,o2,o1,z will always be on the
secondary histories, even if not set in SECFLDS. Also, if ox,
hox, or noz are set in SECFLDS, then their respective component
species will also be forced on the secondary histories. 

The number of histories that will fill a secondary volume is dependent
on the number of fields requested. However, with the max number
of fields (29), 6 histories are saved per volume, so 4 names in
SECOUT will always cover a 24-hr run with hourly secondary histories.

Note that I have not provided for appending histories to an existing
secondary history volume with successive runs -- it will always start 
writing at the beginning of the SECOUT files, overwriting any histories
from previous runs. I may provide for this later if you want. 
Remember, the utility "rdgcm" allows you to read any type of history 
file and find out times and fields that are on it (run rdgcm interactively 
on shavano)

Timesproc does not yet work with secondary histories containing 
less than 29 fields, but I will fix that this week and let you
know.

--Ben