Thursday, April 24, 2008

Status April 24

The three streams are holding at the end of their spin up periods. Some refinements are being made to the budget output diagnostics for better closure. We have also been reviewing our input data holdings. A gap in the PAOB data set was found from 1997 through the end of 2000. The PAOB data starts back up in 2001 through our CDAS input data stream.

After checking this issue with Jack Woolen at NCEP, we found that he had just finished preparing revised PAOB data set (including about 4x more data) from 1985-2000 using JRA25 and ERA40's data holdings. In short, we are aiming to implement these data (many thanks to Jack, and counterparts at JMA and ECMWF). So, the restarts will be delays a few days to test this implementation.

For further information on PAOB, see http://www.bom.gov.au/bmrc/basic/wksp16/papers/Seaman.pdf

A consistent positive impact from the PAOB data suggests that this is worth a couple days to put into the system.

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