divergence functions

From: Fiaz Ahmed <fiaz.500_at_nyahnyahspammersnyahnyah>
Date: Tue Jan 29 2013 - 16:26:34 MST

I have horizontal wind fields u(time,level,lat,lon) and v on a fixed grid.
(15S to 15N ; 40E to 160E). I computed the horizontal wind divergence using
the following three functions:

1) div=uv2dvF(u,v)
2) div1=uv2dv_cfd(u,v,lat,lon,2)
3) div2=
center_finite_diff_n(u,lon,False,0,3)+center_finite_diff_n(v,lat,False,0,2)

Is there any reason why, the above values would not be approximately equal?
My divergence values differ from each other by at least one order of
magnitude.

-- 
Fiaz Ahmed
Graduate Research Assistant
Department of Atmospheric Sciences
Texas A&M University
<fiaz.500@tamu.edu>

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Tue Jan 29 16:26:44 2013

This archive was generated by hypermail 2.1.8 : Tue Jan 29 2013 - 22:44:26 MST