Set cox54a,cox54b ocean BRDF properties.
brdf_cam variable value
variable can be one of the following:
- pcl
-
Pigment concentration for cox54a,cox54b ocean BRDF (in mg/m
). The default value is 0.01 mg/m
.
- sal
-
Salinity for cox54a,cox54b ocean BRDF (in ”per mille”, 0.1%; this unit is equivalent to the other common units for salinity, ppt - parts per thousand, psu - practical salinity unit). The default value is 34.3.
- u10
-
Wind speed for cox54a,cox54b ocean BRDF (in m/s). The wind speed is the most important parameter affecting ocean BRDF. The minimum allowed wind speed is 1 m/s because otherwise the strong specular reflection causes numerical problems. If a lower value is specified, the wind speed is automatically set to 1m/s.
- uphi
-
Wind direction for cox54a,cox54b ocean BRDF. Default value is 0 degrees, which is wind from the South. 90 degrees corresponds to wind from the West, etc. (Honestly, this was never truly validated. It could possibly be that 0 is wind from the North, 90 is wind from the East, etc.)
At present only available with rte_solver cdisort, rte_solver montecarlo and rte_solver fdisort2. The number of streams (number_of_streams) is automatically increased to 16 if cox_and_munk BRDF is switched on, to avoid numerical problems. To switch on Cox and Munk BRDF, specify any of the brdf_cam options and define at least brdf_cam u10.