Alternative TitleQuantitative Relationship Between the Spatiotemporal Change of Relative Humidity and Climatic Factors in the Arid Region of Northwest China from 1960 to 2015
徐荣潞; 李宝富; 廉丽姝
Year Published2020
Abstract in Chinese为了揭示中国干旱区湿度变化特征,基于19602015年西北干旱区74个气象站数据,利用趋势分析、Mann-Kendall非参数检验法以及敏感性分析等方法,对相对湿度的时空变化趋势及其与气温、降水的定量关系进行了分析。结果表明:(1)19602015年,西北干旱区年均相对湿度呈不显著下降趋势,速率为-0.125%/10a。(2)除秋季相对湿度呈微弱增加趋势(0.087%/10a),其他季节都呈不显著降低趋势,且春季的下降速率最大(-0.554%/10a)。(3)空间上,北疆地区的年均相对湿度最大;其次是南疆,而河西走廊最小。但南疆相对湿度呈显著增加(0.228%/10a),而北疆与河西走廊呈不显著下降趋势。(4)不同区域各季节相对湿度与降水均呈显著(p<0.05)正相关性,而相对湿度与气温主要呈显著(p<0.05)负相关关系。近几十年来,西北干旱区相对湿度呈微弱下降的态势,且具有一定的空间差异。在区域气候暖湿化背景下,若降水量增加10%,可诱发相对湿度增加1.22%;若气温升高10%,可诱发相对湿度减少0.96%。
Abstract in EnglishTo reveal the characteristics of humidity changes in arid regions of China,we used daily meteorological data from 74 weather stations in the arid region of northwest China(ARNC)from 1960 to 2015,and employed trend analysis,Mann-Kendall nonparametric statistical test and sensitivity analysis to analyze the temporal and spatial variation of relative humidity(RH)and its quantitative relationships with temperature and precipitation.The results showed that:(1)the mean annual RH showed a non-significant downward trend at a rate of-0.125%/decade from 1960 to 2015;(2)RH showed a slight increasing trend(0.087%/decade) in autumn,a non-significant decreasing trend in winter and summer,and a large decreasing trend in spring(-0.554%/decade);(3)the average annual RH was largest in northern Xinjiang,second largest in southern Xinjiang,and smallest in the Hexi Corridor;however,RH increased significantly in southern Xinjiang(0.228%/decade,p<0.05),while RH showed a non-significant downward trend in northern Xinjiang and Hexi Corridor;(4)RH and precipitation in different regions of different seasons showed the significant positive correlation(p<0.05),while RH and temperature mainly showed the significant negative correlation(p<0.05).In recent decades,RH in the arid region of northwest China had declined slightly,and there were certain spatial differences.Under the background of regional climate warming and humidification,if the precipitation increases by 10%,RH will increase by 1.22%;if the temperature increases by 10%,RH will reduce by 0.96%.
Keyword in Chinese相对湿度 ; 区域差异 ; 西北干旱区
Keyword in Englishrelative humidity regional difference arid region of northwest China
Indexed ByCSCD
WOS Research AreaMeteorology & Atmospheric Sciences
Document Type期刊论文
Affiliation徐荣潞, 曲阜师范大学地理与旅游学院, 日照, 山东 276826, 中国.; 李宝富, 曲阜师范大学地理与旅游学院, 日照, 山东 276826, 中国.; 廉丽姝, 曲阜师范大学地理与旅游学院, 日照, 山东 276826, 中国.
Recommended Citation
GB/T 7714
徐荣潞,李宝富,廉丽姝. 1960-2015年西北干旱区相对湿度时空变化与气候要素的定量关系[J],2020,27(6):233-.
APA 徐荣潞,李宝富,&廉丽姝.(2020).1960-2015年西北干旱区相对湿度时空变化与气候要素的定量关系.水土保持研究,27(6),233-.
MLA 徐荣潞,et al."1960-2015年西北干旱区相对湿度时空变化与气候要素的定量关系".水土保持研究 27.6(2020):233-.
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