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Synoptic climatology of winter daily temperature extremes in Sapporo, northern Japan

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Title: Synoptic climatology of winter daily temperature extremes in Sapporo, northern Japan
Authors: Farukh, M. A. Browse this author
Yamada, Tomohito J. Browse this author →KAKEN DB
Keywords: Aleutian low
geopotential height
maximum daily temperature extreme
minimum daily temperature extreme
sea level pressure
Siberian high
Issue Date: Apr-2018
Publisher: John Wiley & Sons
Journal Title: International journal of climatology
Volume: 38
Issue: 5
Start Page: 2230
End Page: 2238
Publisher DOI: 10.1002/joc.5329
Abstract: Extreme winter daily temperature is an important parameter for determining winter precipitation. This study used a principal component analysis and k-means clustering to characterize the circulation patterns of extreme daily temperatures for 19 winter seasons in Sapporo, Hokkaido, Japan. Climatological anomaly maps were constructed for sea level pressure (SLP) and the 500-hPa geopotential height for the identified minimum (Tmin(10); 239days) and maximum (Tmax(90); 236days) daily temperature extremes. The Tmax(90) SLP anomaly pattern was the opposite (west-east orientation) of the Tmin(10) pattern. The circulation patterns that predominantly contributed to winter rainfall were derived from cyclones over the Sea of Japan via instability created by abundant heat and moisture over the ocean and a strong positive 500-hPa height anomaly over Hokkaido.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山田 朋人

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