c     -----------------------------------------------------------------
c     file 'm1sim.inc'

c     This block common is contains variables used for a simulation run
c     for MAIN.

c     + + + VARIABLE DECLARATIONS + + +

      integer          ntstep
      integer          am0jd
      real             amalat
      real             amalon
      real             amzele


      common /m1sim/
     i                 am0jd, ntstep,
     r                 amalat, amalon, amzele

c     + + + VARIABLE DEFINITIONS + + +

c     ntstep  - Number of timesteps per day for erosion.

c              range values      min       max
c              ------------   ---------  ---------
c              fixed              1        96
c              typical           24        24
c              ------------   ---------  ---------

c            - This variable contains the number of timesteps
c              per day for which erosion is calculated.

c     am0jd  - Current julian day of simulation

c              range values      min       max
c              ------------   ---------  ---------
c              fixed              1      variable
c              typical         variable  variable
c              ------------   ---------  ---------

c            - This variable contains the current julian day
c              the simulation run.

c     amalat - Latitude of simulation site (degrees)

c              range values       min        max
c              ------------   ---------  ---------
c              fixed            0.00      90.00
c              typical         15.00      75.00
c              ------------   ---------  ---------

c            - This variable contains the latitude of
c              simulation site.

c     amalon - Longitude of simulation site (degrees)

c              range values       min        max
c              ------------   ---------  ---------
c              fixed            0.00      360.00
c              typical         70.00      170.00
c              ------------   ---------  ---------

c            - This variable contains the longitude
c              of simulation site.

c     amzele - Average site elevation (m)

c              range values       min        max
c              ------------   ---------  ---------
c              fixed          fmin       fmax
c              typical        tmin       tmax
c              ------------   ---------  ---------

c            - This variable contains the average value of elevation
c              relative to sea level for the site.

c-----------------------------------------------------------------------