Re: [ferret_users] Re: Calculating stream function from known velocityfield.

["E. D. Cokelet" <Edward.D.Cokelet@xxxxxxxx> (Ned)]

A real wind field, such as in the COADS data, is three-dimensional.  It cannot be represented by a two-dimensional stream function.  There is vertical flow.  You might try constructing a theoretical, two-dimensional velocity field and see if it satisfies the test you are attempting.  If it fails, it should only do so to the precision caused by truncation error due to the lack of significant digits inherent in the computer word size.  

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Edward D. (Ned) Cokelet, Ph.D.		Oceanographer
NOAA/PMEL							off:  (206) 526-6820
7600 Sand Point Way NE				fax: (206) 526-6485
Seattle, WA 98115-6439

Edward.D.Cokelet@noaa.gov

The contents  of this message are mine personally and do not necessarily reflect any position of the Government or the National Oceanic and Atmospheric Administration.