INDEX OF DIRECTION CHANGE OF ZONALLY AVERAGED WIND AND CHANGE OF SEASON

• Published in: Journal of Tropical Meteorology Vol. 17; no. 2; pp. 128 - 135
• Main Author: 朱敏 徐建霞 张铭
• Format: Journal Article
• Language: English
• Published: Guangzhou Guangzhou Institute of Tropical & Marine Meteorology 01.06.2011; Meteorological Center of Nanjing Air Force, Nanjing 210018 China%Meteorological Center of Nanjing Air Force, Nanjing 210018 China%Laboratory of Atmospheric Circulation and Short-Range Climate Forecast, Meteorological College, PLA University of Science and Technology, Nanjing 211101 China; Laboratory of Atmospheric Circulation and Short-Range Climate Forecast, Meteorological College, PLA University of Science and Technology, Nanjing 211101 China
• Subjects: February stratospheric reverse; Empirical Orthogonal Function (EOF); Wind Direction Change Index (WI); four-dimensional space-time changes

In this paper, a Wind Direction Change Index （WI）, which can describe four-dimensional spatiotemporal changes of the atmospheric circulation objectively and quantitatively, is defined to study its evolution and seasonal variation. The first four modes can be obtained by EOF expansion of the zonally...