Retrieving Groundwater Depletion and Drought in the Tigris-Euphrates Basin Between 2003 and 2015
Retrieving Groundwater Depletion and Drought in the Tigris-Euphrates Basin Between 2003 and 2015
复制标题
反演2003年至2015年底格里斯-幼发拉底河流域地下水枯竭和干旱
DOI：
10.1111/gwat.12611
复制
发表时间：
2018-09-01
期刊：
影响因子：
2.6
通讯作者：
Jin, Taoyong
中科院分区：
文献类型：
--
作者：
Chao, Nengfang;Luo, Zhicai;Jin, Taoyong
底格里斯河-幼发拉底河流域（TEB）地下水枯竭和干旱的定量估计可用于可持续管理其水资源。在这里，来自重力恢复和气候实验（GRACE）卫星使命的数据被用来推断从2003年1月到2015年12月TEB总水储存量的月度变化。此外，还利用测高数据和陆面模型输出来消除湖水变化和其他水文因素的贡献，获得地下水总枯竭（TGWD）、人为驱动的地下水枯竭（HGWD）和气候驱动的地下水枯竭。我们得出的结论是，总蓄水量和TGWD损失的惊人下降速度具有“加速”趋势，因为2007年至2015年的趋势是2003年至2006年的3.6倍。此外，HGWD为116.09 Gt，占TGWD的98%。最后，总存储赤字指数（TSDI）是来自GRACE数据来表征干旱的TEB。结果表明，TSDI符合实际的干旱，而不是帕尔默干旱严重程度指数（PDSI）和TEB已经历了严重的干旱，自2007年9月以来，根据TSDI和PDSI。该研究为了解数据较少的地区或国家的水文过程和水资源可持续利用提供了一种有效和独特的方法，这对于更有效，可持续和跨境合作的水资源管理至关重要。
Quantitative estimates of the groundwater depletion and droughts in the Tigris-Euphrates Basin (TEB) can be useful for sustainably managing its water resources. Here, data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission are used to infer the monthly changes in the total water storage of the TEB from January 2003 to December 2015. Additionally, the data of altimetry and output from land surface models are used to remove the contributions from lake water changes and other hydrological factors to obtain the total groundwater depletion (TGWD), human-driven groundwater depletion (HGWD), and climate-driven groundwater depletion. We conclude that an alarming rate of decrease in the total water storage and the loss of TGWD have an "accelerating" trend, as the trend during 2007 to 2015 was 3.6 times that during 2003 to 2006. Moreover, the HGWD is 116.09 Gt, which accounts for 98% of the TGWD. Finally, the total storage deficit index (TSDI) is derived from the GRACE data to characterize the drought of the TEB. The results show that TSDI agrees well with the actual drought rather than the Palmer drought severity index (PDSI) and that the TEB has been undergoing a severe drought since September 2007 according to both the TSDI and PDSI. The research in this study provides an effective and unique method for understanding the hydrological processes and sustainable use of water resources in regions or countries with little data, which is essential for more efficient, sustainable, and cross-boundary cooperative water resource management.