A possibility to specify pigment concentration (in mg/m3) for the Cox and Munk ocean BRDF with the help of an netCDF file, which is used in combinition with options latitude, longitude, and time.
cox_and_munk_pcl_map file [variable_name]
where file is the location of the netCDF file. libRadtran reads the value at the nearest pixel to the given latitude and longitude. No spatial interpolation or averaging of the values is done.

The default name of the pigment concentration variable is chlorophyll, but can be changed with the optional argument variable_name. The pigment concentration must be provided as function of latitude and longitude, chlorophyll(lat, lon), or additionally may also depend on time chlorophyll(time, lat, lon). If a time-dependent pigment concentration is specified, the pigment concentration will be interpolated according to the option time_interpolate. All grids must be provided in the file as double lat(lat), double lon(lon), and double time(time).





Arve Kylling 2010-03-10