photobiologyInOut (version 0.4.29)

qtuv_clouds: Clouds descriptor

Description

Constructor of a named list of parameter values to be used as argument to parameter clouds of function qtuv_s.e.irrad().

Usage

qtuv_clouds(cloud.type = "clear.sky")

Value

A one-row data frame with members "optical.depth", "base", "top" and "label".

Arguments

cloud.type

character One of "clear.sky", "cirrus", "stratocumulus" or "overcast".

Details

This function provide a rough approximation for parameter values. In reality there is large variation in the cloud optical depths (COD) and in the elevation at which clouds are located, within each type of cloud. The TUV model assumes a continuous uniform cloud layer, thus the normally discontinuous cover of cumulus clouds cannot be described.

Examples

qtuv_clouds("clear.sky")
qtuv_clouds("cirrus")
qtuv_clouds(c("clear.sky", "cirrus"))