Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022593 |
Disconnection Between Trends of Atmospheric Drying and Continental Runoff | |
Yang, Yuting1,2; Zhang, Shulei1,2; McVicar, Tim R.2,3; Beck, Hylke E.4; Zhang, Yongqiang2; Liu, Bing5 | |
2018-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:7页码:4700-4713 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Australia; USA |
英文摘要 | The ratio of potential evapotranspiration (E-0) over precipitation (P), known as the aridity index (AI), has been commonly used to stratify global aridity zones and widely adopted to assess changes in aridity globally. Anthropogenic climate change, in particular atmospheric warming, is projected to increase AI, which has in most cases been interpreted as increasing terrestrial aridity. In this study we demonstrate, for both past and future conditions, that such an interpretation requires reconsideration. Using catchment observations over the past 30 years and climate model projections for the 21st century, we show that increased AI does not ubiquitously lead to a decreased water availability over land, using surface runoff (Q) as an indicator. This is primarily caused by a higher Q sensitivity to changes in P (S-P) and a lower Q sensitivity to changes in E-0 (S-E0), with the ratio of S-P over S-E0 being higher than the relative changes of E-0 compared to P (i.e., |P x S-P| > |E-0 x S-E0|). Assessment of Coupled Model Intercomparison Project Phase 5 model outputs indicates that both Q and AI change-induced Q changes are increasing over the majority of the globe for the 21st century despite increasing AI (a drying atmosphere). Our findings demonstrate a disconnection between the atmospheric drying trends and surface runoff trends and call for caution when interpreting retrospective and future changes in terrestrial aridity based on AI and related measures. |
英文关键词 | aridity index runoff trends runoff sensitivity atmospheric aridity terrestrial aridity potential evapotranspiration |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442502100029 |
WOS关键词 | PLANT-RESPONSES ; CLIMATE ; MODEL ; PATTERNS ; DROUGHT ; CMIP5 ; EARTH ; CO2 ; PRECIPITATION ; INCREASE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21560 |
专题 | 资源环境科学 |
作者单位 | 1.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China; 2.CSIRO Land & Water, Canberra, ACT, Australia; 3.Australian Res Council, Ctr Excellence Climate Syst Sci, Sydney, NSW, Australia; 4.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lab Heihe River Ecohydrol & Basin Sci, Linze Inland River Basin Res Stn, Lanzhou, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Yuting,Zhang, Shulei,McVicar, Tim R.,et al. Disconnection Between Trends of Atmospheric Drying and Continental Runoff[J]. WATER RESOURCES RESEARCH,2018,54(7):4700-4713. |
APA | Yang, Yuting,Zhang, Shulei,McVicar, Tim R.,Beck, Hylke E.,Zhang, Yongqiang,&Liu, Bing.(2018).Disconnection Between Trends of Atmospheric Drying and Continental Runoff.WATER RESOURCES RESEARCH,54(7),4700-4713. |
MLA | Yang, Yuting,et al."Disconnection Between Trends of Atmospheric Drying and Continental Runoff".WATER RESOURCES RESEARCH 54.7(2018):4700-4713. |
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