气候变化研究进展 ›› 2008, Vol. 4 ›› Issue (000): 18-21.

• Scientific Basis • 上一篇    下一篇

Changes of Warmer Winter and Winter Temperature over China During 1956-2005

Wang Ling,Zhang Qiang,Chen Yu,Gong Daoyi   

  • 收稿日期:2008-08-01 修回日期:1900-01-01 出版日期:2008-06-30 发布日期:2008-06-30

Changes of Warmer Winter and Winter Temperature over China During 1956-2005

Ling Wang,Qiang Zhang,Yu Chen,Daoyi Gong   

  • Received:2008-08-01 Revised:1900-01-01 Online:2008-06-30 Published:2008-06-30

摘要: A reasonable warmer winter index (IWWI) in the framework of the three equiprobability categories (i.e. warmer, normal and colder categories) is proposed based on the winter temperature data observed at 565 stations in China during 1956-2005, where IWWI is defined as the ratio of the station number of warmer category over the total number of stations. The results suggest that the trend of IWWI was consistent with that of the winter temperature on decadal time scale, and their rates of change were 10%/10 a and 0.4 ℃/10 a, respectively. It is found that only 13 warmer winter events in total were detected by IWWI over the past 50 years, and 85% of them occurred after 1986.

关键词: warmer winter index, winter temperature, interdecadal variation

Abstract: A reasonable warmer winter index (IWWI) in the framework of the three equiprobability categories (i.e. warmer, normal and colder categories) is proposed based on the winter temperature data observed at 565 stations in China during 1956-2005, where IWWI is defined as the ratio of the station number of warmer category over the total number of stations. The results suggest that the trend of IWWI was consistent with that of the winter temperature on decadal time scale, and their rates of change were 10%/10 a and 0.4 ℃/10 a, respectively. It is found that only 13 warmer winter events in total were detected by IWWI over the past 50 years, and 85% of them occurred after 1986.

Key words: warmer winter index, winter temperature, interdecadal variation

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