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[1]ZHAO Peipei,ZHANG Mingjun,WANG Shengjie,et al.Changes of Extreme Temperature Events in the Chinese Tianshan Mountains During the Perod from 1960 to 2012[J].Research of Soil and Water Conservation,2015,22(06):190-197.

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Changes of Extreme Temperature Events in the Chinese Tianshan Mountains During the Perod from 1960 to 2012

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 06 Page number: 190-197 Column: Public date: 2015-12-28

Title:: Changes of Extreme Temperature Events in the Chinese Tianshan Mountains During the Perod from 1960 to 2012

Author(s):: ZHAO Peipei, ZHANG Mingjun, WANG Shengjie, ZHOU Panpan, LIU Xuemei, WANG Jie; College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China

Keywords:: extreme temperature; spatial and temporal distribution; variation tendency; Chinese Tianshan Mountains

CLC:: K903

DOI:: -

Abstract:: Based on daily maximum and minimum temperature at 8 meteorological stations above 1 500 m in the Chinese Tianshan Mountains observed by the China Meteorological Administration from 1960 to 2012, the spatial and temporal variation characteristics of extreme temperature events were analyzed by the methods of linear regression, Mann-Kendall, Morlet wavelet, factor analysis and correlation analysis. Nine indices of extreme temperature were studied. The results are as follows. (1) The occurrence of cold days, cold nights, ice days, frost days and extreme cold days have significantly decreased by -0.70, -2.36, -1.00, -5.14, -1.12 days/decade, respectively. Meanwhile, the occurrence of warm days, warm nights and growing season length show significant increase at rates of 0.87, 2.70, 4.03 days/decade, respectively; the tendency rate of diurnal temperature range is -0.34 days/decade, respectively. (2) The warming trend of warm night is significantly larger than cold night, and the warming trend of warm (cold) night days are obviously larger than the warm (cold) days. (3) From the point of spatial distribution, the increase or decrease trend of extreme temperature shows obvious difference. (4) Each extreme temperature index in Tianshan Mountain from 53 a shows significantly different periodicity change in certain time series. (5) The factor analysis demonstrates that the extreme temperature indices are closely correlated with each other except diurnal temperature range.

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