globalchange  > 气候变化与战略
CSCD记录号: CSCD:5471339
论文题名:
近60年来南北疆日照百分率变化特征分析
其他题名: Variations in sunshine percentage for the last 60 years in the northern and southern regions of the Xinjiang
作者: 何毅; 杨太保; 王琳栋; 王凯; 陈雨
刊名: 兰州大学学报. 自然科学版
ISSN: 0455-2059
出版年: 2015
卷: 51, 期:3, 页码:1504-1512
语种: 中文
中文关键词: 影响因素 ; 突变特征 ; 日照百分率 ; 南北疆
英文关键词: influential factor ; abrupt change point ; sunshine percentage ; the northern and southern of the Xinjiang
WOS学科分类: METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向: Meteorology & Atmospheric Sciences
中文摘要: 利用均匀分布在新疆的12个国家标准气象站1955-2012年日照百分率数据,通过气候趋势分析、气候突变分析、Pearson相关分析及Morlet小波分析等方法,研究近60年来南北疆日照百分率的变化特征.结果表明:南北疆日照百分率总体上均呈下降趋势,日照时间为南疆多于北疆.近60年来,南北疆各站点日照百分率变化趋势较为一致,绝大部分站点呈下降趋势.从各年代来看,北疆日照百分率总体经历了上升-上升-下降-下降-下降的变化过程,而南疆日照百分率总体经历了上升-上升-下降-下降-上升的变化过程.突变特征方面,南北疆发生了0.05及以上显著水平的突变现象,从各站点突变点来看,突变年份和空间分布无明显规律性,突变年份同步性和一致性较差.南北疆绝大部分站点日照百分率与风速、最高气温、平均气温呈正相关关系,与降水和相对湿度呈负相关关系,与最低气温关系不明显.Morlet小波分析结果显示,北疆的日照百分率存在5年和25年比较明显的周期,而南疆存在5年和10年的周期变化规律.
英文摘要: Growing interests in simulating changes in hydrological processes at global and regional scales correspond to increasing floods and draughts at the global scale induced by climate changes, which would have a significant impact on social and economic systems, food security and the survival and development of humans. By connecting sunshine percentage data of twelve national standard meteorological stations evenly distributed in the northern and southern regions of Xinjiang from 1955 to 2012 with the existing climatic regionalization of the place, the rate of linear tendency, the Mann-Kendall test and Morlet wavelet analysis were used to illustrate the change trends and detect abrupt changes of meteorological elements respectively to study the climate changes in northern and southern Xinjiang in the last 60 years. The results showed that a trend that the sunshine percentage decreased obviously existed in these regions, with the sunshine percentage being higher in the north. Variations of sunshine percentage in those years were consistent in northern and southern regions of Xinjiang, with most of these stations observing a down trend. From the point of view of each decade, the sunshine percentage showed an "increase-increase-decrease-decrease-decrease" pattern in the north, but the south showed an "increase-increase-decrease-decrease-increase" pattern. Abrupt changes in sunshine percentage showed no obvious abrupt change points, which might be due to the urbanizing development and increasing cloud coverage. Wind speed or maximum temperature and mean temperature were positively correlated with the sunshine percentage, while precipitation and relative humidity were passively correlated with it. There was not a clear relationship between the minimum and sunshine percentage. The results of the Morlet wavelet analysis showed that in the northern Xinjiang, the presence of sunshine percentage changes exhibited a circle of 5 a and 25 a. In the south the presence of sunshine percentage showed a clear period of 5 a and 10 a around the periodic variation.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/149561
Appears in Collections:气候变化与战略

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作者单位: 兰州大学资源环境学院冰川与生态地理研究所, 兰州, 甘肃 730000, 中国

Recommended Citation:
何毅,杨太保,王琳栋,等. 近60年来南北疆日照百分率变化特征分析[J]. 兰州大学学报. 自然科学版,2015-01-01,51(3):1504-1512
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