Ocean Assimilation System (PEODAS)
Yonghong Yin, Oscar Alves, Peter Oke and Magdalena Balmaseda*
Centre for Australian Weather and Climate Research (CAWCR)
(* ECMWF)
PEODAS SystemThe PEODAS system is an extention of the BODAS system developed as part of the BLUElink Project into a pseudo Ensemble Kalman Filter. It uses a time evolving ensemble to specify the covariances for the OI assimilation.
An ocean re-analyses from 1980 to 2006 has been completed using the PEODAS systems.
In a collaborative project with Magdalena Balmaseda of ECMWF an intercomparison with the ECMWF systems is being performed.
Preliminary results are show below.
Control - POAMA model with no assimlation (but includes 3D relaxation of T/S with a 2 year timescale)
A012 - POAMA-1 assimilation system (Univariate OI as in Smith et al 1981)
PEODAS - The new ACCESS PEODAS system
ECMWF - the ORA-S3 ECWMF Ocaen Analysis system
For further information: email the POAMA group
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