Clouds descriptor

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")

Arguments

cloud.type

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

Value

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

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")
#>   optical.depth base top     label
#> 1             0    4   5 clear.sky
qtuv_clouds("cirrus")
#>   optical.depth base top  label
#> 1             5    6   8 cirrus
qtuv_clouds(c("clear.sky", "cirrus"))
#>   optical.depth base top     label
#> 1             0    4   5 clear.sky
#> 2             5    6   8    cirrus