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REGIONAL FEATURES OF INTERANNUAL AND INTERDECADAL VARIATIONS IN SUMMER PRECIPITATION ANOMALIES OVER NORTH CHINA

Lie Chen

Open publisher page 9 citations

Abstract

The spatial distribution of standard deviation of summer precipitation and the regional features of the interannual and interdecadal variations of precipitation anomaly percentage are analyzed by using monthly mean precipitation data from June to August during the period of 1951 to 1997 at 26 stations in North China. Then, based on the consistence of the standard deviation and the drought flood appeared at various stations, the division of precipitation anomalies in North China is made, and the long term variation trend of precipitation anomalies in various regions and their stage and climate jump are studied. Finally, it is an important problem when the drought period started from the mid 1960s over North China will end, we shall have a preliminary discussion on this problem.

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What this paper is about

The spatial distribution of standard deviation of summer precipitation and the regional features of the interannual and interdecadal variations of precipitation anomaly percentage are analyzed by using monthly mean precipitation data from June to August during the period of 1951 to 1997 at 26 stations in North China. Then, based on the consistence of the standard deviation and the drought flood appeared at various stations, the division of precipitation anomalies in North China is made, and the long term variation trend of precipitation anomalies in various regions and their stage and climate jump are studied. Finally, it is an important problem when the drought period started from the mid 1960s over North China will end, we shall have a preliminary discussion on this problem.

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Available abstract

The spatial distribution of standard deviation of summer precipitation and the regional features of the interannual and interdecadal variations of precipitation anomaly percentage are analyzed by using monthly mean precipitation data from June to August during the period of 1951 to 1997 at 26 stations in North China. Then, based on the consistence of the standard deviation and the drought flood appeared at various stations, the division of precipitation anomalies in North China is made, and the long term variation trend of precipitation anomalies in various regions and their stage and climate jump are studied. Finally, it is an important problem when the drought period started from the mid 1960s over North China will end, we shall have a preliminary discussion on this problem.

Key concepts: Precipitation, Anomaly (physics), Climatology, China, Flood myth, Environmental science, Standard deviation, Spatial distribution

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