Transmittance due to water vapor

Calculates transmittance due to water vapor.

trans_vapor(...)

# S3 method for numeric
trans_vapor(air_mass_rel, precipitable_water, ...)

# S3 method for weather_station
trans_vapor(weather_station, ...)

Arguments

...	Additional parameters passed to later functions.
air_mass_rel	Relative optical air mass.
precipitable_water	Precipitable water in cm.
weather_station	Object of class weather_station.

Value

Transmittance due to water vapor (0-1).