Climate change and its mutation analysis in Shuozhou of Shanxi province during 1960-2010
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    Abstract:

    The climate change characteristics in Shuozhou of Shanxi province in recent 51years is analyzed in detail by using the data of precipitation and temperature observed by 6 meteorological stations during 1960-2010.The climate variation and anomaly are showed and analyzed by statistic tables and methods of moving average,linear tendency,mutation analysis,etc.The results show that the precipitation in Shuozhou was generally in a decreasing trend in recent 51 years,with a linear decreasing rate of -6.21 mm/(10 a),which is lower than that in Shanxi or in the whole nation.The wet years were mostly in 1960s or 1970s,while the dry years were roughly scattered in the whole period.As for the seasonal variation,precipitation decreased in summer and increased in the other 3 seasons,indicating that the annual precipitation decreasing trend is mainly due to the decreased summer precipitation.Yet,no obvious mutation is found in annual or seasonal precipitation variation.The temperature in Shuozhou was generally in a fluctuant increasing trend in recent 51 years,with a linear increasing rate of 0.285℃/(10 a),which is significantly higher than that in Shanxi or in the whole nation.The warming trend is more obvious since 1990s.The temperature is in increasing trend in all the 4 seasons with different increasing range,and temperature rises most significantly in winter with increasing rate of 0.5℃/(10 a).Significant mutations are found in annual and seasonal average temperature variations.The climate in Shuozhou during 1960-2010 can be divided into two periods,namely cool period before mid-1990s,and warm period after mid-1960s.

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ZHANG Xiaoping, ZHOU Jiankun, ZHANG Xiao, LI Zhicai, ZHANG Hongyu, TIAN Fenping. Climate change and its mutation analysis in Shuozhou of Shanxi province during 1960-2010[J]. Journal of Nanjing University of Information Science & Technology,2015,7(2):168-173

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  • Received:December 29,2012
  • Online: April 23,2015
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