Dear RegCM users,
  I am having some query in the 'chemparam' section of 'regcm.in'.
Actually when I am making a fresh run of the model the 'chemparam'
section in 'regcm.in' shows some default value.

$chemparam
idirect  =    2,
chtrname  =    'SO2',
chtrsol  =  0.20,
chtrdpv  = 0.00300,0.00800,
dustbsiz  =  0.01, 1.00,
$
But after completion of the fresh run it creats another
'regcm.in' file for the restrt run of the model. In this time
the 'chemparam' section contains following value.

$chemparam
idirect  =    1,
chtrname  =                    '^@^@^@^@^@',
chtrsol  =  0.00,
chtrdpv  = 0.00000,0.00000,
dustbsiz  =  0.00, 0.00,
$

Actually which setup we should use in the model, if I am not
using any chemistry model. I am in doubt, shall I need to change all the option like seocond set of upper section before making a fresh run.
Please give me suggestions regarding this.

Thanking you.
Sincerely yours
Satyaban Bishoyi Ratna