• How to get started:
1. Download the compressed files in zip  format.
2. Uncompress the file (use Winzip in Windows or Mac or gunzip in Unix/Linux) in a directory of your choice.
3. You should see nine FORTRAN 90 files (each ending in *.f90), eight sample input files (each ending in *.inp), and  one sample sky distribution file generated using MODTRAN (skydist.inp_0deg)
4. Use your favorite FORTRAN 90 compiler to compile the code. For example, if you are using Lahey's LF95, type the following at a command prompt inside the directory where the code resides ( check the compiler's documentation for the desired switches to use when compiling):

lf95  global.f90 modules.f90 light_internal.f90 interface.f90 logbin.f90 geom2.f90 vsf.f90 water.f90 mc.f90 -out aomc.exe

If you are compiling the code in Linux using Intel's F90 compiler, type the following:

ifc global.f90 modules.f90 light_internal.f90 interface.f90 logbin.f90 geom2.f90 vsf.f90 water.f90 mc.f90 -o aomc

5. Running the program requires that all input files (all ending in *.inp) be in the same directory where the executable is run. The main input file amc.inp
   

• Listing of subroutines/functions/modules:

Modules	Functions/subroutines
anglesum aop_global const_global light_global log_global math_global physical_global propagation_global rand_global randmod	anglesum (contains module anglesum) check_even check_odd check_range_int geom2 global interface_sub light logbin mc (main program) olayer rand rot3D vsf water

• Description of each FORTRAN files:

geom2.f

Subroutine computes the new X,Y and Z position of the photon after a scattering event.

global.f90

Subroutine contains all the global variables used in the AOMC model.

interface.f90

Determines the outcome of the photon's interaction with the air-water interface.

light_internal.f90

Subroutine computes the incident angle of the new photon on the water surface.

logbin.f90

Subroutine logs the photon's trajectory.

mc.f90 (main program)

This is the main program.

modules.f90

Contains the random number generator function "rand", and the angle summation routine "anglesum".

rand_global.f90

Module is contained in subroutine "modules.f90" and computes the random number "rand".

vsf.f90

Subroutine determines the photon's angle of scatter using the scattering phase function.

water.f90

Subroutine traces the path of a photon from the moment it enters the water to the moment when it lost from the system.

• The output files:

The AOMC model will output 4  " *.out "  files:

• aop.out:  A listing by depth and wavelength of all of the apparent optical properties except radiance.
• iop.out:   A listing of the inherent optical properties.
• rad.out:  A listing by depth and wavelength of radiance at various angles
• wave.out: A listing by wavelength of the "just below the surface (0-)" values for several apparent optical properties (this is a subset of the data presented in the aop.out file).
  

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Last Modified on Sunday, November 23, 2003