Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023278 |
Trends and Interannual Variability in Terrestrial Water Storage Over the Eastern United States, 2003-2016 | |
Cao, Qian1; Clark, Elizabeth A.2; Mao, Yixin2; Lettenmaier, Dennis P.1 | |
2019-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:3页码:1928-1950 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We examine the relative contributions of root zone soil moisture (SM) and groundwater (GW) storage to trends and interannual variability in total water storage (TWS) from essentially the entire Gravity Recovery and Climate Experiment (GRACE) record (2003-2016). Our study region is the Eastern United States where GW generally is shallow, and we use observations and simulations from a suite of land surface models (LSMs) where observations are not available. We first consider Illinois, which has a long-term network of SM sensors and observation wells. We assessed the uncertainties in GRACE TWS in comparison with the observation-based TWS using observed SM, well-derived GW, and model-reconstructed snow water equivalent. We evaluated LSM SM compared with observations over Illinois; generally good agreement encouraged us to use the LSM-ensemble average SM, well-derived GW, and Snow Data Assimilation System snow water equivalent over the entire Eastern United States to examine the relative contribution of storage components to GRACE TWS over this larger domain. Taken together, the three components explained 2%-85% of interannual variability in GRACE TWS across the 2-digit Hydrologic Unit Code regions. Root zone SM was the dominant contributor to the interannual variability (but not trends) of GRACE TWS over much of the Eastern United States. We also compared three independent approaches to estimating GW: well data, baseflow observations, and GRACE. Despite much smaller magnitudes of variation, baseflow-derived GW correlated more highly with well-derived GW over the eastern-most and Upper Mississippi regions, while GRACE-derived GW matched better with well-derived GW over the remaining regions. |
英文关键词 | terrestrial water storage interannual variability land surface model groundwater storage |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464660000010 |
WOS关键词 | LAND-SURFACE SCHEME ; CATCHMENT-BASED APPROACH ; GROUNDWATER STORAGE ; GLOBAL PATTERNS ; TABLE DYNAMICS ; SOIL-MOISTURE ; MIDDLE-EAST ; GRACE ; 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/181559 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90024 USA; 2.Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Cao, Qian,Clark, Elizabeth A.,Mao, Yixin,et al. Trends and Interannual Variability in Terrestrial Water Storage Over the Eastern United States, 2003-2016[J]. WATER RESOURCES RESEARCH,2019,55(3):1928-1950. |
APA | Cao, Qian,Clark, Elizabeth A.,Mao, Yixin,&Lettenmaier, Dennis P..(2019).Trends and Interannual Variability in Terrestrial Water Storage Over the Eastern United States, 2003-2016.WATER RESOURCES RESEARCH,55(3),1928-1950. |
MLA | Cao, Qian,et al."Trends and Interannual Variability in Terrestrial Water Storage Over the Eastern United States, 2003-2016".WATER RESOURCES RESEARCH 55.3(2019):1928-1950. |
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