Reconstructing Terrestrial Water Storage Variations from 1980 to 2015 in the Beishan Area of China
Reconstructing Terrestrial Water Storage Variations from 1980 to 2015 in the Beishan Area of China
复制标题
重建中国北山地区1980-2015年陆地水储量变化
DOI：
10.1155/2019/3874742
复制
发表时间：
2019
期刊：
影响因子：
1.7
通讯作者：
Teng Yanguo
中科院分区：
文献类型：
--
作者：
Yin Wenjie;Hu Litang;Han Shin Chan;Zhang Menglin;Teng Yanguo
Terrestrial water storage (TWS) is a key element in the global and continental water cycle. Since 2002, the Gravity Recovery and Climate Experiment (GRACE) has provided a highly valuable dataset, which allows the study of TWS over larger river basins worldwide. However, the lifetime of GRACE is too short to demonstrate long‐term variability in TWS. In the Beishan area of northwestern China, which is selected as the most prospective site for high‐level radioactive waste (HLRW) disposal, the assessment of long‐term TWS changes is crucial to understand disposal safety. Monthly and annual TWS changes during the past 35 years are reconstructed using GRACE data, other remote sensing products, and the water balance method. Hydrological flux outputs from multisource remote sensing products are analyzed and compared to select appropriate data sources. The results show that a decreasing trend is found for GRACE‐filtered and Center for Space Research (CSR) mascon solutions from 2003 to 2015, with slopes of −2.30 ± 0.52 and −1.52 ± 0.24 mm/year, respectively. TWS variations independently computed from the water balance method also show a similar decreasing trend with the GRACE observations, with a slope of −0.94 mm/year over the same period. Overall, the TWS anomalies in the Beishan area change seasonally within 10 mm and have been decreasing since 1980, keeping a desirable dry condition as a HLRW disposal site.
