[Dhsvm-users] RE: Input ET to DHSVM?

[Waichler, Scott R]

Mohammad,

DHSVM is a detailed model and one of the major outputs is ET.  If you
wanted to supply ET yourself it would take a major recoding effort.  My
opinion is that you would be better off selecting a simpler model, whose
complexity is commensurate with the unknowns of your meteorologic data,
or you need to run DHSVM with a range of meteorologic inputs and try to
bracket the uncertainty caused by it.

Scott Waichler
Senior Research Scientist
Pacific Northwest National Laboratory
scott.waichler at pnl.gov
http://hydrology.pnl.gov
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> Does anyone tried to use ET as input in DHSVM? I have climate 

> data for 9 years but this is not the period I want to 

> simulate. So I was trying to extrapolate using the regression 

> between these stations and a near by station. I also used 

> Ryan (1977) model to account for the shading and elevation 

> effect but no success. The extrapolated values do not show 

> any correlation with observed especially the peak values are 

> missing. And that's the reason why I am looking forward about 

> the possibility of giving the ET as input. 

> 

> I was wondering if some one used this or knows about what is 

> the best way to extrapolate the climate data. It will be 

> great help for me.