Spatial-Temporal Characteristics of Regional Extreme Low Temperature Events in China during 1960-2009

被引：0
|
作者：
WANG Xiao-Juan [1 ,2 ]
GONG Zhi-Qiang [3 ]
REN Fu-Min [3 ]
FENG Guo-Lin [3 ]
机构：
[1] Department of Atmospheric and Sciences,Lanzhou University
[2] College of Physics and Electronic Project,Changshu Institute of Technology
[3] National Climate Center,China Meteorological Administration
来源：
AdvancesinClimateChangeResearch | 2012年 / 3卷 / 04期
基金：
中国国家自然科学基金;
关键词：
regional extreme low temperature events; spatial-temporal features; turning point; frequency distribution;
D O I：
暂无
中图分类号：
P468.02 [];
学科分类号：
0706 ; 070601 ;
摘要：
An objective identification technique is used to detect regional extreme low temperature events(RELTE) in China during 1960-2009.Their spatial-temporal characteristics are analyzed.The results indicate that the lowest temperatures of RELTE,together with the frequency distribution of the geometric latitude center,exhibit a double-peak feature.The RELTE frequently happen near the geometric area of 30 N and 42 N before the mid-1980s,but shifted afterwards to 30 N.During 1960-2009,the frequency,intensity,and the maximum impacted area of RELTE show overall decreasing trends.Due to the contribution of RELTE,with long duration and large spatial range,which account for 10% of the total RELTE,there is a significant turning point in the late 1980s.A change to a much more steady state after the late 1990s is identified.In addition,the integrated indices of RELTE are classified and analyzed.
引用
收藏
页码：186 / 194
页数：9
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