aop.out

The aop.out file contains the Apparent Optical Properties (AOPs) computed by the Monte Carlo simulation. The file contains a table of AOPs at various depths. The output is structured in blocks, one for each wavelength defined in lambbot.inp.

The table has the following columns:

• depth (m): The depth at which the AOPs are calculated. The first depth = 0 represents the values at the water surface. The second depth = 0 represents the values just below the air/water interface.
• Eu: Upward planar irradiance. This is the total upward-flowing light energy across a horizontal plane.
• Ed: Downward planar irradiance. This is the total downward-flowing light energy across a horizontal plane.
• E: Net planar irradiance, calculated as Ed - Eu.
• R*: Irradiance reflectance, calculated as Eu / Ed.
• Eou: Upward scalar irradiance. This is the total upward-flowing light energy from all directions at a point.
• Eod: Downward scalar irradiance. This is the total downward-flowing light energy from all directions at a point.
• meancosUP: Average cosine for upward irradiance, calculated as Eu / Eou. It represents the average direction of the upward light field.
• meancosDown: Average cosine for downward irradiance, calculated as Ed / Eod. It represents the average direction of the downward light field.
• meancos: Average cosine for the total light field, calculated as (Ed - Eu) / (Eod + Eou).
• rd: Diffuse attenuation coefficient for downward irradiance.
• rup: Diffuse attenuation coefficient for upward irradiance.
• Ld: Downward radiance in the polar direction (0 degrees).
• Lu: Upward radiance in the nadir direction (180 degrees).

Each block of output for a given wavelength is terminated by the line: * The above water reflectance is actually an albedo calculation