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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 September 2017

- Monthly mean temperature in Okinawa/Amami tied with 2014 as the highest on record for September since 1946.
- Monthly sunshine durations were significantly above normal in northern Japan and on the Sea of Japan side of eastern Japan.
- Monthly mean temperatures were extremely high from southeastern Europe to Turkey, from Norway to northeastern Greenland, and from Mauritius to northern Mozambique.
- In the equatorial Pacific, remarkably positive SST anomalies were observed in the western part and negative SST anomalies were observed from the central part to the eastern part.
- Convective activity was enhanced around the Maritime Continent and the western North Atlantic.
- The jet stream displaced southward from its normal position over the area from Japan to the Pacific.
- The Pacific High extended to the south of 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

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Tokyo Climate Center, Climate Prediction Division, 1-3-4 Otemachi, Chiyoda-ku, Tokyo, Japan.
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