[ferret_users] geostropic currents

[Mahesh Shinde <mashinde05@xxxxxxxxx>]

Dear friends,

I am computing geostropic currents using Aviso altimetry. it plots the currents, please see the figure below....
here I am also attaching the script .....

the ferret script ...

 can data/all
 can viewport
 use dt_ref_med_merged_madt_h_20090610_20090610_20100602.nc !(aviso ssh)
 let g=9.8
 let pi=3.141
 let omega = 0.729e-4
 let yy = y[g=GLZ2] !( please note that this 'GLZ2' is coming from ferret
 let f=2.0*omega*sin(yy*pi/180.0)
 let ssh=GRID_0001
 let ug = -1.0*(g/f)*ssh[y=@ddc] !(centered difference scheme is used)
 let vg = (g/f)*ssh[x=@ddc]!(centered difference scheme is used)
!plot geostropic winds
 vec/l=1/xskip=4/yskip=4/nolab ug,vg
 go land

!-------------------------------------------------------------------------------------------------------------

please tell why currents are looks like.....


thanks

regards
mahesh

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(Permanent Affiliaiton)

Mr. Mahesh Shinde

Climate and Global Modeling Division,
Indian Institute of Tropical Meteorology,
NCL POST, Dr. Homi Bhabha Road,
Pashan, Pune-411008, INDIA 
email: samurai@xxxxxxxxxxxxxx
cell: +91-9822050959
skype : mashinde2k9
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Attachment: aviso_geos_currents.gif
Description: GIF image