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Finding Backward trajectory of wind data [message #84642]

Thu, 01 December 2011 22:51

shambhu
Messages: 41
Registered: December 2011

Member

Hi all,

Am having a file(air.2000.nc) which consists of
lat,lon,level(height),time(date) which is 6 hourly data. M trying to
find nearest point & then to find trajectory. Am not getting how to
find for lat=42, lon=79. Below is the code am using, which is answered
in this forum. But am facing some probs.

pro ConnectGrids
; First grid
n1 = 72
x1 = air ;file var
y1 = air

; Find closest: method 1
triangulate, x1, y1, c ; Compute Delaunay triangulation
connect = GRIDDATA(x1,y1, air, Xout=x2, Yout=y2,$
/NEAREST_N,TRIANGLES =c)

please help me on this. looking forward

thanks in adv

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