Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028648 |
Coherent satellite monitoring of the water cycle over the Amazon. Part 2: Total water storage change and river discharge estimation. | |
Pellet Victor; Filipe Aires; Dai Yamazaki | |
2021-04-27 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | In companion paper 1, the SAtellite Water Cycle (SAWC) satellite dataset integration approach was presented. SAWC accounts for 1) the closure of the water budget at the sub‐basin scale by 2) using upstream/downstream dependencies. Here, the SAWC database is used to reconstruct a missing water component. The total water storage change (dS) can be reconstructed prior to the Gravity Recovery and Climate Experiment (GRACE) period. In terms of seasonal and inter‐annual variations, SAWC provides long‐term dS estimates that are highly consistent with the GRACE estimate (2002‐2015). When compared to the extent of inundation, correlation of anomalies reaches 0.6 over sub‐basins presenting large floodplain. A strong relationship (correlation of 0.7) exists between the monthly dS and the El Niño index. The river discharge R can also be estimated using the SAWC approach during the GRACE period. A scheme was developed to estimate R continuously along the river through the indirect interpolation of discharge station measurements by using satellite estimates of dS, precipitation P, and evaporation E. These R estimates along the river were evaluated with 80 independent measurements and had a correlation of 0.86 and a Kling‐Gupta Efficiency (KGE) index of 0.71. A comprehensive monthly river discharge estimate was proposed for the first time across the Amazon basin over 13 years (2002‐2015) at a 0.25° resolution. The SAWC framework is a pure observation tool for integrating a large range of satellite estimates, potentially facilitating the assimilation of such data into land‐surface models. |
领域 | 资源环境 |
URL | 查看原文 |
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/324962 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Pellet Victor,Filipe Aires,Dai Yamazaki. Coherent satellite monitoring of the water cycle over the Amazon. Part 2: Total water storage change and river discharge estimation.[J]. Water Resources Research,2021. |
APA | Pellet Victor,Filipe Aires,&Dai Yamazaki.(2021).Coherent satellite monitoring of the water cycle over the Amazon. Part 2: Total water storage change and river discharge estimation..Water Resources Research. |
MLA | Pellet Victor,et al."Coherent satellite monitoring of the water cycle over the Amazon. Part 2: Total water storage change and river discharge estimation.".Water Resources Research (2021). |
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