Analysis on the Characteristics of Climate Change in Hami Oasis in Recent 64 Years
Abstract: Based on the observational data of temperature and precipitation from 1951 to 2014 from the na-tional weather station of Hami, the inter-annual and seasonal variation and characteristics of temperature and precipitation in recent 64 years of Hami city are analyzed by using the analysis methods of linear regression, 5-year sliding average, and Mann-Kendall test and wavelet analysis, etc. The analysis results show that: 1) In recent 64 years, the average temperature in Hami reveals a general trend of slow increase, and the linear tendency of the annual average temperature is 0.12˚C/10 years. The temperature decreased gradually from 1950s to 1970s, and the temperature between 1980s and 1990s maintained at the climatic value, and the temperature increased ob-viously in recent 14 years. There were seasonal differences on variation of temperature within the year. The temperature in winter and spring showed an upward trend, while it showed an opposite tendency in summer and autumn, and winter air temperature contributed most to the whole year temperature. 2) In recent 64 years, the annual precipitation in Hami shows an increasing trend, and the liner tendency of the annual average precipitation is about 2.3 mm/10 years, and the annual precipitation in 1950s had a slight decrease, and it decreased obviously in 1960s and rose slightly from 1970s to 1980s maintaining around the average for previous years. The precipitation began to increase from 1990s and increased more obviously in the twenty-first century. The whole annual precipitation showed an increasing trend, and the annual precipitation in summer contributed most, and the increasing range of the rest seasons from large to small were spring, winter and autumn. In Hami, a significant change of temperature increase was demonstrated in 1987, whereas perception showed a trend of fluctuation, without any observation of sudden changes.
文章引用: 张 科 , 苗运玲 (2016) 近64 a来哈密绿洲气候变化特征分析。 气候变化研究快报， 5， 63-69. doi: 10.12677/CCRL.2016.51009
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