H2O

Water vapor (H2O) column concentration

Attributes

float | continuous | dynamic | g·cm-2 | basic

Description

The variable H2O overwrites the predefined H2O total column concentration from the selected atmospheric model in MODEL by the user input H2O value (in [g·cm-2]). Typical worldwide and annual H2O concentrations range from 1 g·cm-2 to 6 g·cm-2, with typical mean values around 3 g·cm-2.
If the value is not know, user can set H2O=-1 (default value) to use the predefined atmospheric model H2O concentration.

In the spectral range covered by 6SV (i.e., 400-2500 nm), H2O has specific absorption features at 550 nm, 700 nm, 800 nm, 950 nm, 1020 nm, 1400 nm, 1900 nm and 2500 nm with typical transmittances at the bottom of the absorption band of 95%, 75%, 75%, 40%, 30% 0%, 0% and 0% respectively.