Arid
DOI10.17221/154/2018-SWR
Analysis of trends of hydrologic and climatic variables
Forootan, Elham
通讯作者Forootan, Elham
来源期刊SOIL AND WATER RESEARCH
ISSN1801-5395
EISSN1805-9384
出版年2019
卷号14期号:3页码:163-171
英文摘要Assessing trends of hydrologic variables related to both hydrologic processes facilitates accurate water resources forecasting, especially in arid and semiarid regions with high evaporation and low rainfall volume. In this study, spatial and temporal trends of six hydrologic and climatic variables, viz. rainfall, evaporation, streamflow discharge, temperature, wind speed and relative humidity and also the ratio of annual potential evaporation to precipitation (E/P) were analysed at a monthly and annual scale. Moreover, the relationship of relative humidity, temperature, rainfall and wind speed trends with evaporation trend was investigated. Results of the study revealed the absence of significant temporal trend in precipitation, temperature and wind velocity for the majority of months, and the presence of upward trends in relative humidity and evaporation values as well as downward trend in streamflow discharge in some months. At an annual scale increasing evaporation and decreasing stream flow discharge trends were observed at most stations, which means that the region will be confronted with more severe drought conditions in future. Also, the result of Spearman's rank coefficient revealed that the temporal evaporation trend is not related to wind speed, temperature, relative humidity and rainfall trend. Moreover, the spatial trend of climatic and hydrologic variables indicated the similarity of evaporation and relative humidity trend as well as wind speed and rainfall trend.
英文关键词aridity index nonparametric test streamflow watershed
类型Article
语种英语
国家Iran
开放获取类型gold
收录类别SCI-E
WOS记录号WOS:000469042300006
WOS关键词MANN-KENDALL ; STREAMFLOW TRENDS ; RIVER-BASIN ; ANNUAL PRECIPITATION ; WATER-QUALITY ; UNITED-STATES ; TIME-SERIES ; VARIABILITY ; DISCHARGE ; RAINFALL
WOS类目Soil Science ; Water Resources
WOS研究方向Agriculture ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/218869
作者单位Payame Noor Univ, Dept Agr, Tehran, Iran
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GB/T 7714
Forootan, Elham. Analysis of trends of hydrologic and climatic variables[J],2019,14(3):163-171.
APA Forootan, Elham.(2019).Analysis of trends of hydrologic and climatic variables.SOIL AND WATER RESEARCH,14(3),163-171.
MLA Forootan, Elham."Analysis of trends of hydrologic and climatic variables".SOIL AND WATER RESEARCH 14.3(2019):163-171.
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