Digital filter initialization and negative time steps

General scientific issues regarding ROMS

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coccines
Posts: 6
Joined: Mon Apr 06, 2009 5:12 pm
Location: CMRE

Digital filter initialization and negative time steps

#1 Post by coccines » Wed Oct 22, 2014 3:36 pm

Dear All,

is anyone aware of the possibility of using digital filter initialization with ROMS?
Also, is there a possibility of setting negative time steps (i.e., modelling back in time)?

Thanks for your time.
Regards,
Ines

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jivica
Posts: 130
Joined: Mon May 05, 2003 2:41 pm
Location: The University of Western Australia, Perth, Australia

Re: Digital filter initialization and negative time steps

#2 Post by jivica » Thu Oct 23, 2014 6:33 am

I had problem with data assimilation and shocks when applying all increments to the initial state at t0.
As far as I know Andy is working on it and in the near? future it should be available.
This is "normal" approach to use in the atmospheric DA.
Ivica

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