SUPERFICIE TERRESTRE

• Albedo – Bidirectional Reflectance Function

• Tipo Land Use• Indici di Vegetazione

(NDVI, LAI)• Snow cover• Umidita’• Temperatura

http://edc2.usgs.gov/glcc/gifs.php

Land use

TESSEL scheme in a nutshell

High and lowvegetationtreated separately

Variable root depth

Revised canopyresistances,including airhumidity stress onforest

No rootextraction ordeep percolationin frozen soils

New treatmentof snow underhigh vegetation

+ 2 tiles (ocean & sea-ice)

• Tiled ECMWF Scheme for Surface Exchanges over Land

Processi rappresentati nei modelli di clima

2001

Processi rappresentati nei modelli di clima

2007

Soil moisture

• Passive MW• Thermal inertia• Active MW (scatterometer)