advection

Hi,

I need to calculate the advection and I'm not sure that I've got the right
result. The plot looks rather strange.

I need to calculate the term

u*(dT/dx)+v(dT/dy)

I used gradsg operator to calculate dt/dx and dt/dy (see the attachments).

-- 
regards
*******************************************************
*Alexander Semenov*
*
*
PhD Student - Research Assistant
International Arctic Research Center
Department of atmospheric sciences
University of Alaska Fairbanks
930 Koyukuk dr, 408c3
Fairbanks, AK, USA, 99775
work phone +19074742672

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