Japanese 25-year ReAnalysis (JRA-25) and JMA Climate Data Assimilation System (JCDAS)

Last updated: April 2015

The Japan Meteorological Agency (JMA) and the Central Research Institute of Electric Power Industry (CRIEPI) conducted the Japanese 25-year Reanalysis (JRA-25) project to produce a climate dataset for the period from 1979 to 2004.

JMA also continued the production on a near real-time basis using the same data assimilation system as used for JRA-25, called the JMA Climate Data Assimilation System (JCDAS), to monitor the present state of climate.

The provision of these data was terminated in February 2014.

The source of the datasets should be duly acknowledged in scientific and technical papers, publications, press releases and other communications involving the data.

Example for JRA-25:

The dataset used for this study is provided from the Japanese 25-year Reanalysis (JRA-25), a cooperative research project carried out by the Japan Meteorological Agency (JMA) and the Central Research Institute of Electric Power Industry (CRIEPI).