| 乌鲁木齐市1955—2007年日照特征变化分析 |
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| 引用本文： | 王晓梅,田惠平,刘卫平.乌鲁木齐市1955—2007年日照特征变化分析[J].新疆气象,2008,2(5):38-40. |
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| 作者姓名： | 王晓梅 田惠平 刘卫平 |
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| 作者单位： | 新疆气象信息中心，乌鲁木齐市气象局 |
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| 摘 要： | 利用乌鲁木齐市1955—2007年逐月日照时数以及与日照变化相关的≥0．1mm降水日数、雾日数等实测资料，运用一元线性回归、Mann—Kendall等方法分析了乌鲁木齐市日照的变化特征及影响日照减少的可能气象因素。结果发现：乌鲁木齐市日照呈减少趋势，其中秋季日照时数减少比较显著，突变检验的结果表明年日照时数在1976年发生了突变，之后年日照时数逐渐减少。日照时数和≥0．1mm降水日数、雾日数具有很好相关性，说明日照时数减少可能受降水日数、雾日数的影响。
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| 关 键 词： | 日照时数 趋势 突变 ≥0.1mm降水日数 雾日数 |
Variation of Sunshine Hours in Urumqi from 1 955 to 2007 |
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| WANG Xiao-mei,TIAN Hui-ping and LIU Wei-ping.Variation of Sunshine Hours in Urumqi from 1 955 to 2007[J].Bimonthly of Xinjiang Meteorology,2008,2(5):38-40. |
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| Authors: | WANG Xiao-mei TIAN Hui-ping and LIU Wei-ping |
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| Institution: | WANG Xiao-mei, TIAN Hui-ping, LIU Wei-ping( Xinjiang Meteorological Information Center, Urumqi 830002, China; 2. Urumqi Meteorological Bureau, Urumqi 830002, China) |
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| Abstract: | Based on the monthly sunshine hours, the ≥0.1mm precipitation days and fog days which related to the sunshine change in Urumqi during the period of 1955-2007, by means of the methods of one variable linear regression and Mann-Kendall statistic tests, this paper has analyzed the variation characteristics of sunshine and the factors caused decreasing sunshine hours. The main results are as follow The annual sunshine hours in Urumqi is decreasing by the trend rate of 88.7h/ 10a, and the trend rates are -2.4h/10a, -2.7h/10a, -62.3h/10a, -2.4h/10a respectively for the four seasons, the decreasing trend in autumn is significant. In 1976, the sunshine hours happened abruptly change, thereafter to be decreased gradually. There are the high correlation on the sunshine hours and the ≥0.1mm precipitation days or fog days, these indicate that the cause for the sunshine duration variation are the increase of ≥0.1mm precipitation days and fog days in Urumqi. |
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| Keywords: | sunshine hour trend abrupt change ≥0 1mm precipitation days fog days |
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