夏季风影响过渡区与非夏季风影响过渡区蒸发皿蒸发趋势的对比分析

doi:10.7522/j.issn.1000-0534.2018.00006

高原气象

2018, Vol. 37

Issue (4): 1017-1024 DOI: 10.7522/j.issn.1000-0534.2018.00006

论文

夏季风影响过渡区与非夏季风影响过渡区蒸发皿蒸发趋势的对比分析

杨司琪¹, 张强^2,3, 奚小霞¹, 乔梁^1,4

1. 兰州大学大气科学学院, 甘肃兰州 730000;
2. 中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局干旱气候变化与减灾重点开放实验室, 甘肃兰州 730020;
3. 甘肃省气象局, 甘肃兰州 730020;
4. 甘肃省气象信息与技术装备保障中心, 甘肃兰州 730020

Comparative Analysis of Pan Evaporation Trends between the Summer Monsoon Transition Region and Other Regions of China

YANG Siqi¹, ZHANG Qiang^2,3, XI Xiaoxia¹, QIAO Liang^1,4

1. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, Gansu, China;
2. Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province;Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou 730020, Gansu, China;
3. Gansu Provincial Meteorological Bureau, Lanzhou 730020, Gansu, China;
4. Gansu Provincial Meteorological Information and Technic Support and Equipment Center, Lanzhou 730020, Gansu, China

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摘要： 以南昌、定西、乌鲁木齐作为季风区、夏季风影响过渡区以及非季风区的代表站，利用南昌、定西、乌鲁木齐3个常规气象站1961-2010年的常规观测资料，对比了不同地区蒸发皿蒸发趋势的变化情况，初步分析了造成差异的原因。结果表明：不同地区蒸发皿蒸发趋势差异较大。定西、南昌和乌鲁木齐蒸发皿蒸发的倾向率分别为50.3 mm·（10a）^-1，-150.7 mm·（10a）^-1和-206.1 mm·（10a）^-1。此外，通过蒸发皿蒸发量对气象因子的敏感性分析，发现不同地区对不同气象因子的敏感程度不同。最后，结合对气象因子的趋势分析和敏感性分析，发现造成夏季风影响过渡区与非夏季风影响过渡区蒸发皿蒸发趋势差异的主要因子为年降水量、平均低云量和平均风速。近年来季风北边缘位置南退，使夏季风影响过渡区与非夏季风影响过渡区年降水量、平均低云量以及平均风速的变化相反，从而使夏季风影响过渡区与非夏季风影响过渡区蒸发皿蒸发趋势截然相反。

关键词： 夏季风影响过渡区; 蒸发皿蒸发量; 敏感性分析; 影响因子

Abstract: In this paper, Nanchang station, Dingxi station and Urumqi station were taken as representative stations of the summer monsoon region, the summer monsoon transition region and non-summer monsoon region. Based on the conventional observation data of Nanchang station, Dingxi station and Urumqi station from 1961 to 2010, the pan evaporation trends in different regions were compared and the reasons for their differences were analyzed. The results show that the pan evaporation trends varied greatly in different regions. The tendency rates of pan evaporation in Dingxi, Nanchang and Urumqi are 50.3, -150.7 and -206.1 mm·(10a)^-1, respectively. Besides, by analyzing the sensitivity of meteorological factors, it was found that the pan evaporation is sensitive with different meteorological factors in different regions. In addition, combining the trends analysis and sensitivity analysis of the meteorological factors, the main factors that cause the differences of pan evaporation trend in different regions are annual precipitation, average low cloud cover and average wind speed. Due to the latitude that the north edge of the monsoon reached was lower and lower in recent years, the trend of precipitation, average low cloud cover and average wind speed in monsoon transition zone are contrary with these in other regions of China. Thus, the pan evaporation trend in monsoon transition zone are opposite to the pan evaporation trend in other regions of China.

Key words: The monsoon transition region pan evaporation pensitivity analysis impact factors

收稿日期: 2017-09-14 出版日期: 2018-08-22

P46

基金资助: 国家自然科学基金项目（41630426）

通讯作者: 张强(1965-),男,甘肃靖远人,研究员,主要从事大气边界层、陆面过程和干旱气候研究.E-mail:zhangqiang@cma.gov.cn E-mail: zhangqiang@cma.gov.cn

作者简介: 杨司琪(1993-),女,内蒙古锡林郭勒盟人,硕士研究生,主要从事气候变化研究.E-mail:yangsq1993@163.com

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杨司琪, 张强, 奚小霞, 乔梁. 夏季风影响过渡区与非夏季风影响过渡区蒸发皿蒸发趋势的对比分析[J]. 高原气象, 2018, 37(4): 1017-1024.

YANG Siqi, ZHANG Qiang, XI Xiaoxia, QIAO Liang. Comparative Analysis of Pan Evaporation Trends between the Summer Monsoon Transition Region and Other Regions of China. Plateau Meteorology, 2018, 37(4): 1017-1024.

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http://www.gyqx.ac.cn/CN/10.7522/j.issn.1000-0534.2018.00006 或 http://www.gyqx.ac.cn/CN/Y2018/V37/I4/1017

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