[GRASS-user] negative ET values with i.evapo.senay

[Niels Thevs]

Dear all,

just recently, I used the evapotranspiration command i.evapo.senay in 
order to calculate ET maps from MODIS data for irrigation fields in 
Central Asia. The maps for the summer months contain a few negative 
values in the desert areas, while the spring month maps are completely 
negative. How could I correct for those values ?

Regards

Niels

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Dr. Niels Thevs
Institute of Botany and Landscape Ecology
Greifswald University
Grimmer Strasse 88
17487 Greifswald
Germany

Tel.: +49-3834-86-4131
Fax:  +49-3834-86-4114

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