Atmospheric Chemistry Model (ACM)

The AGCM has three parameters that control the calling of the the ACM and the number of chemical species that will be advected by the AGCM.

C_Sflag
Turns the chemistry module on or off in an AGCM run. A value of 0 (zero) turns the ACM off and any different integer value turns it on.

N_SPC
specifies the number chemical species that will be advected by the AGCM.

NHYC_S
controls how often the Chemistry model will be called. These three parameters are set in the esminput file described in the "instructions on how to compile, run, and execute the UCLA AGCM" of this documentation.

In addition to the above paramters, the ACM needs the following data files:

came03.ctl
Sets options and parameters to control an ACM run

chem.dat
Contains the description of the chemical species reactions and photoprocesses.

init.dat
Contains initial Chemical species concentrations to cold start the ACM

surflux.dat
Contains the chemical species surface flux dataset.

initconc.dat
Contains the chemical species restart datase

rad.dat
Contains the photo-chemical cross sections and quantum fields.

CHEMSPCxxxxxxxxxx.x
Contains the chemical species history/restart datasets. Where "xxxxxxxxxx.x" is time stamp of the history.

For further information, please, contact: Joseph Spahr