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

Seasonal Highlights on the Climate System

'Seasonal Highlights' has been issued in PDF format since spring 2007 as a seasonal bulletin focusing on the seasonal highlights of the monitoring results. For monthly information, please refer to 'Monthly Highlights on the Climate System.'

Highlights in Autumn (September 2018 - November 2018)

- It is considered that El Niño conditions are present in the equatorial Pacific (see El Niño Outlook updated on 10 December 2018).
- Seasonal mean temperatures were above normal in northern and eastern Japan.
- Seasonal mean temperatures were extremely high from the northern to northwestern part of Southeast Asia, in and around central Europe, in the eastern USA, and in northeastern Australia.
- Convective activity was enhanced over the seas east of New Guinea, over the latitudinal bands of 10ºN and from western Africa to the Middle East.
- In the 500-hPa height field, positive anomalies were clearly seen around Alaska and northern Europe. Negative anomalies were seen from central Canada to the seas west of the UK and around China.
- The subtropical jet stream displaced southward from its normal position from Eurasia to the Pacific Ocean. The westerly jet stream was weaker than normal over mainland Japan.


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