天山山区空中水汽含量及与气候因子的关系
作者简介:姚俊强(1987-),男,甘肃通渭人,博士研究生,主要研究方向为气候变化与水资源。E-mail:yaojq1987@126.com
收稿日期: 2012-09-24
要求修回日期: 2013-01-11
网络出版日期: 2013-07-20
基金资助
国家重点基础研究发展计划973项目(2010CB951001)、国家科技支撑计划项目(2012BAC23B01)、新疆维吾尔自治区自然科学基金(200821176)共同资助
Characteristics Analysis of Water Vapor Contents Around Tianshan Mountains and the Relationships with Climate Factors
Received date: 2012-09-24
Request revised date: 2013-01-11
Online published: 2013-07-20
Copyright
姚俊强 , 杨青 , 胡文峰 , 赵玲 , 刘志辉 , 韩雪云 , 赵丽 , 孟现勇 . 天山山区空中水汽含量及与气候因子的关系[J]. 地理科学, 2013 , 33(7) : 859 -864 . DOI: 10.13249/j.cnki.sgs.2013.07.859
Relation formula was established between water vapor content and ground water vapor pressure, and the water vapor content of the Tianshan Mountains was calculated, the spatial and temporal distribution of the water vapor content characteristics and the relationship with the climate factors change was analyzed (i.e. temperature, precipitation, NAO/AO index). The following conclusion was drawn: the high value of the water vapor content area for Tianshan Mountains mainly distributed in the north Tianshan Plain region and the river valley in Turpan Basin, the water vapor content is in 12-20 mm. The east and middle area of Tianshan Mountains is a minimum part, the value is in 4-8 mm. In the past 50 years, the water vapor content in Tianshan Mountains exhibited an increasing trend with the rate of 0.26 mm per decade. However, the different seasons are different in the rates of water vapor content increase. Specifically, it increased most obviously in summer at a slope of 0.16 mm per decade and in autumn increased trend at a slope of 0.32 per decade. EOF decomposition of water vapor content showed the water vapor content distribution of has two types: consistency change in entire area under the background of regional climate change and the reverse change in north and south slope. It was showed that the regional climate change factors have impact on water vapor content. Specifically, precipitation in Tianshan Mountains was correlated significantly with water vapor content, especially atmospheric moisture and precipitation in summer, water vapor content is one of the factors that affect precipitation. The EOF decomposition of precipitation and water vapor content showed that the first two vector field of similarity high between the distribution of spatial and temporal distribution. Water vapor has negative feedback effect to regional temperature under the global change and climate change, through it is a major cause of greenhouse gas and also a cause of climate change in terms of global change. NAO or AO in winter has relevant relations with water vapor, and winter AO has the most significant correlation to summer water vapor. These works are important for discussing the regional water cycling process and regional response of climate change under the background of global change. The results lay scientific foundation for rational develop and utilize water vapor sources in Tianshan Mountains.
Key words: water vapor content; climate change; precipitation; temperature; NAO/AO; Tianshan Mountains
Fig. 1 Location of the research area图1 研究区地理位置 |
Fig.2 Annual average water vapor content in the Tianshan Mountains (mm)图2 天山山区水汽含量空间分布(mm) |
Fig. 3 The change curve of annual average water vapor content图3 年平均水汽含量趋势变化曲线 |
Table 1 Interdecadal variation of water vapor content (mm)表1 水汽含量年代际变化(mm) |
1971~2000 年均值 | 水汽含量距平值 | |||||
---|---|---|---|---|---|---|
1961~1970 | 1971~1980 | 1981~1990 | 1991~2000 | 2001~2009 | ||
年 | 10.6 | -0.53 | -0.28 | -0.12 | 0.40 | 0.43 |
春季 | 9.3 | -0.11 | -0.11 | -0.08 | 0.18 | 0.44 |
夏季 | 19.2 | -0.94 | -0.63 | -0.35 | 0.99 | 0.31 |
秋季 | 10.1 | -0.67 | -0.19 | -0.04 | 0.24 | 0.71 |
冬季 | 3.6 | -0.39 | -0.17 | -0.01 | 0.18 | 0.24 |
Fig.4 The correlation coefficient of the first and second vector fields of water vapor content and precipitation图4 降水和水汽第1、2向量场的相关系数 |
Fig.5 Relationship between winter NAO/AO and summer water vapor content图5 夏季水汽与冬季NAO/AO指数的关系 |
The authors have declared that no competing interests exist.
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[2] |
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[3] |
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[4] |
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[5] |
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[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
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[20] |
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[21] |
|
[22] |
|
[23] |
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[24] |
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