IVULCAN

Stratospheric aerosol model

Attributes

integer | discrete | dynamic | unit-less | medium

Description

The variable IVULCAN selects one of the predefined stratospheric aerosol model, thus defining the aerosol optical properties (i.e., extinction, absorption and scattering) and vertical profile used for the stratospheric-layer (10-30 km). The available options are shown in the Table below:

Value(s)Description

1

Background stratospheric Default value

2

Moderate volcanic aerosols

3

High volcanic aerosols

4

Extreme volcanic aerosols

This variable, therefore, has an impact on the simulation of the absorption-scattering processes caused by suspended particles in the sun-target-sensor optical path.

The amount/vertical profile of suspended particles is fixed .