Difference between 3/4DVAR and OBSGRID

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Difference between 3/4DVAR and OBSGRID

Postby dmoreno1 » Thu May 16, 2013 10:18 am

Hello,

I want to assimilate wind observations (speed/direction) in my WRF simulations, and I saw I have 3 alternatives: 3DVar, 4DVar or OBSGRID.

I was reading the manual, and although I understood quite well the differences between 3DVar and 4DVar, I could not understand what is the difference between 3/4DVar and OBSGRID.

Can soemone give me a quick insight about this?

Thank you
dmoreno1
 
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