JRA-25 Atlas

JRA-25 Atlas

The Japan Meteorological Agency (JMA) and the Central Research Institute of Electric Power Industry (CRIEPI) jointly conducted the Japanese 25-year Reanalysis (JRA-25) project for five years from 2001. Quality-controlled observational data from past decades and the latest numerical assimilation and prediction technology were used to produce a long-term record of the state of the atmosphere. The reanalysis covers the 26-year period from 1979 to 2004, and provides consistent and high-quality data. The JRA-25 product is widely used for research on meteorology and climatology, as well as for operational climate monitoring and seasonal forecasting.

Maps of annual, seasonal and monthly averaged climate fields of various meteorological variables from the JRA-25 products have been archived as the JRA-25 Atlas. We hope that the Atlas will be widely used for research and education.

Contents of JRA-25 Atlas

Elements or projections Maximum and minimum values
Invariants
Surface orography and vegetation
not plotted
Surface climatologies
Pressure, wind, temperature
plotted / not plotted
Radiation
plotted / notplotted
Precipitation, snow depth, tropical cyclone
plotted / not plotted
Cloud cover, soil water content
plotted / not plotted
Column climatologies
Heating, water vapor, ozone
plotted / not plotted
Pressure level climatologies
Latitude-longitude projections (wind, vertical velocity, absolute vorticity and divergent wind, stream function and velocity potential)
plotted / not plotted
Polar stereographic projections (geopotential height, isotachs, temperature, kinetic energy)
plotted / not plotted
Latitude-height cross sections (zonal wind, temperature, potential temperature, vertical velocity, northward flux of momentum or heat)
plotted / not plotted
Isentropic level climatologies
Latitude-longitude projections, latitude-height cross sections (pressure, wind, stream function and velocity potential, zonal wind)
plotted / not plotted
Polar stereographic projections (isotachs and Montgomery potential, potential vorticity, pressure, wind)
plotted / not plotted
PV=2 climatologies
Potential temperature, pressure, wind
plotted / not plotted
Time series
Height-time cross sections, indices (zonal wind, MJO index, SOI)
not plotted
Time-longitude cross sections, latitude-time cross sections (zonal wind, velocity potential)
not plotted
Tropical cyclone days
not plotted

Explanation



Links



Credit of the JRA-25 Atlas

The source of the JRA-25 Atlas should be duly acknowledged in papers, publications, press releases or other communications regarding the Atlas.

Example:

The JRA-25 Atlas data used for this study are provided from the cooperative research project of the JRA-25 long-term reanalysis by the Japan Meteorological Agency (JMA) and the Central Research Institute of Electric Power Industry (CRIEPI).


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Numerical Prediction Division, Information Infrastructure Department
Japan Meteorological Agency
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