ld_penman.h

 
#ifndef  LD_PENMAN_H_
#define  LD_PENMAN_H_
 
#include <cbm_errors.h>
 
namespace ldndc {
 
enum
surface_type
{
    water,
    bare_soil,
    short_grass
};
 
double
penman(
       surface_type /* surface charaterization */,
       int /* day of year */,
       int /* number of days of year */,
       double /* albedo */,
       double /* latitude */,
       double /* short-wave radiation */,
       double /* temperature */,
       double /* wind speed */,
       double /* vapour pressure */);
 
double
wind_function(
              surface_type /* surface charaterization */,
              double /* wind velocity */);
 
lerr_t
saturated_vapour_pressure(
                          double /* temperature */,
                          double * /* saturated vapour pressure */,
                          double * /* slope */);
 
} /* end namespace ldndc */
 
#endif  /*  !LD_PENMAN_H_  */