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HOME >Climate System Monitoring > Monthly Highlights on the Climate System

Monthly Highlights on the Climate System

'Monthly Highlights on the Climate System' has been issued in PDF format since March 2007 as a monthly bulletin focusing on the monthly highlights of the monitoring results.

Highlights in March 2017

- The monthly anomaly of the global average surface temperature was the second warmest since 1891.
- In the equatorial Pacific, positive SST anomalies were dominant except around the date line.
- Convective activity was enhanced from the Maritime Continent to the east of the Philippines.
- A blocking high developed from Eastern Siberia to the Bering Sea, and a trough was observed to the east of Japan.
- Monthly precipitation amounts were below normal almost all over Japan.


Full version (PDF)

The descriptions until April 2011 are based on the old normal (i.e., the 1979 - 2004 average).
The descriptions until January 2014 are based on the JRA-25/JCDAS datasets.

Figures and Tables



If you would like to subscribe to Monthly Highlights on the Climate System, please send an email to

with your name, affiliation, country and email address.
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Tokyo Climate Center, Climate Prediction Division, 1-3-4 Otemachi, Chiyoda-ku, Tokyo, Japan.
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