December, 2008 updated
In March 2006, the Japan Meteorological Agency (JMA) started real-time operation of the JMA Climate Data Assimilation System (JCDAS). JCDAS takes over the same system as JRA-25, and the data assimilation cycle is extended up to the present. Its products have been available since January 2005. Using JCDAS and JRA-25 products enables users to conduct climate diagnosis with a homogeneous dataset covering since 1979.
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