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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 June 2020

- The monthly anomaly of the average temperature over Japan was the warmest for June since 1898.
- Monthly mean temperatures were significantly above normal all over Japan, and monthly precipitation amounts were significantly above normal in Okinawa/Amami.
- Monthly mean temperatures were extremely high from the northern part of Eastern Siberia to the northeastern part of Western Siberia, from the eastern part of East Asia to the northwestern part of Southeast Asia, in and around southwestern Russia, from northern to eastern Europe, from the western part of Western Africa to the western part of Middle Africa, from the northeastern to central USA, in the northern part of South America, from northern to eastern Australia, and from western to southwestern Australia.
- In the equatorial Pacific, remarkably positive SST anomalies were observed over the western part, and remarkably negative SST anomalies were observed over the eastern part.
- Convective activity was enhanced over the southwestern tropical Indian Ocean and South Asia, and suppressed from the northern part of the South China Sea to the seas northeast of the Philippines and over the western and central equatorial Pacific.
- In the 500-hPa height field, positive anomalies were seen over the seas south of Greenland, northeastern Europe, and the northern part of Eastern Siberia, and negative anomalies were seen over southern Europe, Western Siberia, the southwestern part of Eastern Siberia, and southern Alaska.
- The subtropical jet stream was stronger than normal over Northern Africa and Central Asia, and shifted northward from its normal position over East Asia.

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.

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