Aggregates MODTRAN data over SCOPE bands by averaging

aggreg reads a MODTRAN .atm output file and averages six relevant atmospheric radiative transfer quantities (extraterrestrial solar irradiance, hemispherical reflectance, direct and diffuse transmittances, and path radiance) onto the (possibly coarser, multi-resolution) SCOPE spectral band definition.

Usage

aggreg(atmfile, SCOPEspec)

Arguments

atmfile

character. Path to a MODTRAN .atm text file with a header row, wavelength in column 2, and the relevant transmittance/radiance functions in columns 3-20.

SCOPEspec

list. SCOPE spectral band definition, with elements nreg (number of spectral regions), start (start wavelength of each region, nm), end (end wavelength of each region, nm), and res (spectral resolution of each region, nm).

Value

numeric matrix with nwS rows (total number of SCOPE bands across all regions) and 6 columns. The six columns correspond to: (1) Eso*cos(tts)/pi, (2) rdd, (3) tss, (4) tsd, (5) tssrdd, (6) La (path radiance).

Author

Carlos Camino

Examples

if (FALSE) { # \dontrun{
M <- aggreg(atmfile, SCOPEspec)
} # }