<DIV>Hello every body,</DIV>
<DIV> I use ERA-40 draw time serial of area mean temperature. I wonder weather the "surface" means height above sea level.</DIV>
<DIV> If it is height above sea level, How to do area mean? Can AAVE function works? ( terrain of my concerned area is complex, it contains high montain, desert, basin, river,ice covered ground and so on. the variation of height is large too)</DIV>
<DIV> Thanks for any suggestion!!!</DIV>
<DIV> </DIV><p>
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