Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019632 |
Multiscale temporal variability and regional patterns in 555 years of conterminous US streamflow | |
Ho, Michelle1; Lall, Upmanu1,2; Sun, Xun1,3; Cook, Edward R.4 | |
2017-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The development of paleoclimate streamflow reconstructions in the conterminous United States (CONUS) has provided water resource managers with improved insights into multidecadal and centennial scale variability that cannot be reliably detected using shorter instrumental records. Paleoclimate streamflow reconstructions have largely focused on individual catchments limiting the ability to quantify variability across the CONUS. The Living Blended Drought Atlas (LBDA), a spatially and temporally complete 555 year long paleoclimate record of summer drought across the CONUS, provides an opportunity to reconstruct and characterize streamflow variability at a continental scale. We explore the validity of the first paleoreconstructions of streamflow that span the CONUS informed by the LBDA targeting a set of U.S. Geological Survey streamflow sites. The reconstructions are skillful under cross validation across most of the country, but the variance explained is generally low. Spatial and temporal structures of streamflow variability are analyzed using hierarchical clustering, principal component analysis, and wavelet analyses. Nine spatially coherent clusters are identified. The reconstructions show signals of contemporary droughts such as the Dust Bowl (1930s) and 1950s droughts. Decadal-scale variability was detected in the late 1900s in the western U.S., however, similar modes of temporal variability were rarely present prior to the 1950s. The twentieth century featured longer wet spells and shorter dry spells compared with the preceding 450 years. Streamflows in the Pacific Northwest and Northeast are negatively correlated with the central U.S. suggesting the potential to mitigate some drought impacts by balancing economic activities and insurance pools across these regions during major droughts. Plain Language Summary The development of paleoclimate streamflow reconstructions in the conterminous United States (CONUS) has provided water resource managers with improved insights into multidecadal and centennial scale variability that cannot be reliably detected using shorter instrumental records. However, most reconstructions to date have focused on streamflow at a catchment scale. Here we use the Living Blended Drought Atlas (LBDA), a spatially and temporally complete 555 year long paleoclimate record of summer drought across the CONUS, to reconstruct and characterize streamflow variability at a continental scale. The reconstructions show signals of contemporary droughts such as the Dust Bowl (1930s) and 1950s droughts. Decadal-scale variability was detected in the late 1900s in thewestern U.S., however, similar modes of temporal variability were rarely present prior to the 1950s. The twentieth century featured longer wet spells and shorter dry spells compared with the preceding 450 years. Streamflows in the Pacific Northwest and Northeast are negatively correlated with the central U.S. suggesting the potential to mitigate some drought impacts by balancing economic activities and insurance pools across these regions during major droughts. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403682600031 |
WOS关键词 | WESTERN UNITED-STATES ; ATLANTIC MULTIDECADAL OSCILLATION ; CANONICAL CORRELATION-ANALYSIS ; RIVER-BASIN ; TREE-RINGS ; SIERRA-NEVADA ; DROUGHT ; RECONSTRUCTIONS ; FLOW ; TRENDS |
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/21588 |
专题 | 资源环境科学 |
作者单位 | 1.Columbia Univ, Columbia Water Ctr, New York, NY 10027 USA; 2.Columbia Univ, Dept Earth & Environm Engn, New York, NY USA; 3.East China Normal Univ, Minist Educ, Key Lab Geog Informat Sci, Shanghai 200241, Peoples R China; 4.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA |
推荐引用方式 GB/T 7714 | Ho, Michelle,Lall, Upmanu,Sun, Xun,et al. Multiscale temporal variability and regional patterns in 555 years of conterminous US streamflow[J]. WATER RESOURCES RESEARCH,2017,53(4). |
APA | Ho, Michelle,Lall, Upmanu,Sun, Xun,&Cook, Edward R..(2017).Multiscale temporal variability and regional patterns in 555 years of conterminous US streamflow.WATER RESOURCES RESEARCH,53(4). |
MLA | Ho, Michelle,et al."Multiscale temporal variability and regional patterns in 555 years of conterminous US streamflow".WATER RESOURCES RESEARCH 53.4(2017). |
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