首页|The characteristics of clusters of weather and extreme climate events in China during the past 50 years

The characteristics of clusters of weather and extreme climate events in China during the past 50 years

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The pick-up algorithm by the k-th order cluster for the closest distance is used in the fields of weather and climactic events,and the technical terms clustered index and high clustered region are defined to investigate their temporal and spatial distribution characteristics in China during the past 50 years.The results show that the contribution of extreme high-temperature event clusters changed in the period from the 1960s to the 1970s,and its strength was enhanced.On the other hand,the decreasing trend in the clusters of low-temperature extremes can be taken as a signal for warmer winters to follow in the decadal time scale.Torrential rain and heavy rainfall clusters have both been lessened in the past 50 years,and have different cluster characteristics because of their definitions.Regions with high clustered indexes are concentrated in southern China.The spatial evolution of the heavy rainfall clusters reveals that clustered heavy rainfall has played an important role in the rain-belt pattern over China during the last 50 years.

extreme eventclustersdecadal clustered index

Yang Ping、Hou Wei、Feng Guo-Lin

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Institute of Urban Meteorology, China Metrology Administration, Beijing 100089, China

Laboratory for Climate Studies, China Meteorological Administration, Beijing 100081, China

Project supported by the National Natural Science Foundation of ChinaProject supported by the National Natural Science Foundation of China国家重点基础研究发展规划(973计划)National Science and Technology Ministry,ChinaNational Science and Technology Ministry,China

41005043411050332012CB9559012007BAC29B012007BAC03A01

2012

10.1088/1674-1056/21/1/019201

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDCSCDSCIEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2012.21(1)
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