Knowledge Resource Center for Ecological Environment in Arid Area
Potential evapotranspiration, SPI, SPEI and surface humidity change over China during 1961-2011 | |
Wang, Wen; Xu, Rengui; Chen, Xi | |
通讯作者 | Wang, Wen |
会议名称 | International Association of Hydrological Sciences Symposium on Climate and Land Surface Changes in Hydrology / IAHS-IAPSO-IASPEI Joint Assembly |
会议日期 | JUL 22-26, 2013 |
会议地点 | Gothenburg, SWEDEN |
英文摘要 | Using monthly meteorological observation data at 649 sites in China for 1961-2011, potential evapotranspiration (PET), standardized precipitation index (SPI), standardized precipitation evapotranspiration index (SPEI) and land-surface humidity changes are investigated. PET calculated using the Priestley-Taylor formula shows that the southeast half of China, mostly humid to semi-humid areas, exhibits a significant decrease in PET, whereas the northwestern half of China, mostly arid to semi-arid, exhibits significant increase. SPI and SPEI exhibit different spatial and temporal characteristics over China, in some parts even presenting opposite directions of changes, especially on the Tibetan Plateau where SPI shows a decrease in drought severity but SPEI shows an increase in drought severity. There was no significant change in humidity in most parts of China, except in the northwest, and on the central and northeastern Tibetan Plateau where significant increase in humidity is detected. However, there was a significant decrease in the area of the hyper-arid zone and a significant increase in the area of the semi-arid zone in the past 51 years. |
英文关键词 | potential evapotranspiration standardized precipitation index standardized precipitation evapotranspiration index land-surface humidity drought |
来源出版物 | CLIMATE AND LAND SURFACE CHANGES IN HYDROLOGY |
ISSN | 0144-7815 |
出版年 | 2013 |
卷号 | 359 |
页码 | 295-301 |
ISBN | 978-1-907161-37-7 |
出版者 | INT ASSOC HYDROLOGICAL SCIENCES |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | CPCI-S |
WOS记录号 | WOS:000323627400046 |
WOS关键词 | HEAT |
WOS类目 | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources |
WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/302368 |
作者单位 | Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Wen,Xu, Rengui,Chen, Xi. Potential evapotranspiration, SPI, SPEI and surface humidity change over China during 1961-2011[C]:INT ASSOC HYDROLOGICAL SCIENCES,2013:295-301. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。