近39年喀什日照时数变化分析

Abstract

Abstract: In this paper, the change of sunshine duration and its affecting factors are analyzed based on the data of sunshine duration and occurring days of blowing dust, floating dust and sandstorm in Kashgar, Xinjiang during the period 1970-2008. The results show that the sunshine duration was increased notably in recent 39 years. There were the significant seasonal and annual variations of sunshine duration. The sunshine duration was changed insignificantly in the 1970s, sharply decreased in the 1980s, slightly decreased in the 1990s, but sharply increased during the period of 2000-2008. There was a 28-year periodic change of sunshine duration in Kashgar, and also a 25-year one in recent 39 years. An abrupt change of sunshine duration occurred in 1997. The significant increase of annual, spring and summer sunshine durations was mainly caused by the obvious reduction of floating dust, however sandstorm and blowing dust were not the main factors affecting the sunshine duration in Kashgar.

Key words: sunshine duration, floating dust, blowing dust, sand storm, Kashgar, Xinjiang

CLC Number:

P422.11

YANG Xia, CAI Mei, ZHAO Yi-zhou, ZHANG Yun-hui, LUO Ang, JIANG Yuan-an. Analysis on the Change of Sunshine Duration in Kashgar,Xinjiang in Recent 39 Years[J]., 2011, 28(1): 158-162.

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Analysis on the Change of Sunshine Duration in Kashgar,Xinjiang in Recent 39 Years

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