WRFDA in 3DVAR mode with multiple satellite sensors

Issues with running 3DVAR.

WRFDA in 3DVAR mode with multiple satellite sensors

Postby hnlim » Sun Mar 27, 2011 7:46 pm


Wonder had anyone ran assimilation using multiple sensors using
WRFDA in 3DVAR mode and with VarBC turned on.

I ran into the situation that I am not reaching convergence for 2 outer
loops using both CV3.

My aim now is to actually be able to converging solution where eps*norm of gradient
is fulfilled and the maximum of inner iterations note exceeding the preset of 200.

I had tried with test case and it works. And for my own case study. I can only achieve
convergence when I add conventional data.

If anyone out there has any idea on why
i wasn't able to attain convergence, please advice.


PS according to user guide if convergence is not met,
this could be due to observations or first guess.
I had look at them and they look ok.
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