Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020843 |
Climatic and physiographic controls of spatial variability in surface water balance over the contiguous United States using the Budyko relationship | |
Abatzoglou, John T.1; Ficklin, Darren L.2 | |
2017-09-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The geographic variability in the partitioning of precipitation into surface runoff (Q) and evapotranspiration (ET) is fundamental to understanding regional water availability. The Budyko equation suggests this partitioning is strictly a function of aridity, yet observed deviations from this relationship for individual watersheds impede using the framework to model surface water balance in ungauged catchments and under future climate and land use scenarios. A set of climatic, physiographic, and vegetation metrics were used to model the spatial variability in the partitioning of precipitation for 211 watersheds across the contiguous United States (CONUS) within Budyko's framework through the free parameter . A generalized additive model found that four widely available variables, precipitation seasonality, the ratio of soil water holding capacity to precipitation, topographic slope, and the fraction of precipitation falling as snow, explained 81.2% of the variability in . The model applied to the Budyko equation explained 97% of the spatial variability in long-term Q for an independent set of watersheds. The model was also applied to estimate the long-term water balance across the CONUS for both contemporary and mid-21st century conditions. The modeled partitioning of observed precipitation to Q and ET compared favorably across the CONUS with estimates from more sophisticated land-surface modeling efforts. For mid-21st century conditions, the model simulated an increase in the fraction of precipitation used by ET across the CONUS with declines in Q for much of the eastern CONUS and mountainous watersheds across the western United States. |
英文关键词 | climate data hydroclimate water balance |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413484200008 |
WOS关键词 | MEAN ANNUAL EVAPOTRANSPIRATION ; LAND-COVER ; GLOBAL PATTERN ; RUNOFF ; PRECIPITATION ; UNCERTAINTY ; STREAMFLOW ; IMPACTS ; MODEL ; DROUGHT |
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/20005 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Idaho, Dept Geog, Moscow, ID 83843 USA; 2.Indiana Univ, Dept Geog, Bloomington, IN 47405 USA |
推荐引用方式 GB/T 7714 | Abatzoglou, John T.,Ficklin, Darren L.. Climatic and physiographic controls of spatial variability in surface water balance over the contiguous United States using the Budyko relationship[J]. WATER RESOURCES RESEARCH,2017,53(9). |
APA | Abatzoglou, John T.,&Ficklin, Darren L..(2017).Climatic and physiographic controls of spatial variability in surface water balance over the contiguous United States using the Budyko relationship.WATER RESOURCES RESEARCH,53(9). |
MLA | Abatzoglou, John T.,et al."Climatic and physiographic controls of spatial variability in surface water balance over the contiguous United States using the Budyko relationship".WATER RESOURCES RESEARCH 53.9(2017). |
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