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 July 2019
- The monthly anomaly of the global average surface temperature was the warmest for July since 1891.
- Monthly precipitation amounts were significantly above normal on the Pacific side of eastern and western Japan.
- Monthly mean temperatures were extremely high in and around the southern part of Central Asia, from central Europe to the northern part of Northern Africa, in and around Alaska, and from the southern part of North America to the northwestern part of South America.
- In the equatorial Pacific, remarkably positive SST anomalies were observed in the area near the date line.
- Convective activity was enhanced over the latitude band of 15ºN in Africa, the western equatorial Indian Ocean, and the central tropical Pacific except the equatorial region, and was suppressed from the central tropical Indian Ocean to the Maritime Continent.
- In the 500-hPa height field, wave trains were dominant over the Northern Hemisphere mid- and high-latitudes, with positive anomalies around northern Greenland, over Western to Central Siberia, and Alaska, and negative anomalies over the East Siberian Sea, western Canada and Western Russia.
- The subtropical jet stream shifted southward 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.
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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