Monitoring groundwater changes in the Yangtze River basin using satellite and model data

Abstract

Space-borne geodetic sensors and model-based datasets have been used to monitor groundwater changes in the Yangtze River basin (YRB). Groundwater storage variations were computed using the following datasets:• Gravity Recovery and Climate Experiment (GRACE)-derived terrestrial water storage (TWS),• Noah driven Global Land Data Assimilation System (GLDAS-Noah) model to simulate the total water content (TWC) i.e. soil moisture, ice and snow, and canopy water storage, and• Satellite altimetry-observed surface water reservoir storages.Overall, the results show that groundwater in the YRB rose by at least 3.34 km 3 /yr between January 2003 and December 2009. However, the estimated groundwater linear trend for the period of 2003-2009 was −0.95 km 3 /yr according to the Changjiang and Southwest Rivers Water Resource Bulletin (CJSRWB). An analysis of the methodology of the CJSRWB shows that the groundwater estimate was based on the water balance approach, which has been found to be weak in inter-basin sub-surface flow. The GRACE-estimated groundwater rise is larger and suggests that the YRB is affected by seepage from Tibetan lakes through a sub-surface fault. Additionally, there is evidence showing that water loss from the Yangtze River by underground leakage through faults could also be a cause of the difference. Therefore, it is concluded that further investigation is required to determine the causation.

Characterizing Drought and Flood Events over the Yangtze River Basin Using the HUST-Grace2016 Solution and Ancillary Data

“…In this lake, the MODIS-based estimates of the inundated area present poor correlation (0.10) with the GRACE TWS estimates in the Delta Plain Basin (not shown). In addition, the similar results in terms of altimetry-derived TWS also support our conclusion [45]. …”

Quantifying temporal variations in water resources of a vulnerable middle eastern transboundary aquifer system

“…Variations in the GRACE‐derived TWS (TWS grace ) represent variations in one or more of the following reservoirs: snow/ice, surface water, soil moisture, groundwater, and wet biomass (e.g., Wahr, Molenaar, & Bryan, ). GRACE data have been extensively used to quantify aquifers recharge and depletion rates (Ahmed, Sultan, Yan, & Wahr, ; Ahmed et al, ; Ahmed et al, ; Al‐Zyoud, Rühaak, Forootan, & Sass, ; Castellazzi, Martel, Galloway, Longuevergne, & Rivera, ; Castle et al, ; Chinnasamy & Agoramoorthy, ; Chinnasamy, Maheshwari, & Prathapar, ; Chinnasamy & Sunde, ; Döll, Müller Schmied, Schuh, Portmann, & Eicker, ; Ellett, Walker, Western, & Rodell, ; Feng et al, ; Gonçalvès, Petersen, Deschamps, Hamelin, & Baba‐Sy, ; Huang, Pavlic, Rivera, Palombi, & Smerdon, ; Huang et al, ; Huo et al, ; Jiang, Ferreira, & Chen, ; Joodaki, Wahr, & Swenson, ; Lakshmi, ; Lenk, ; Li & Rodell, ; Long et al, ; Mohamed, Sultan, Ahmed, Yan, & Ahmed, ; Rodell, Velicogna, & Famiglietti, ; Tiwari, Wahr, & Swenson, ; Veit & Conrad, ; Voss et al, ; Wada et al, ; Wouters, Bonin, Chambers, Sasgen, & Wahr, ; Yosri, Abd‐Elmegeed, & Hassan, ).…”

“…Variations in the GRACE-derived TWS (TWS grace ) represent variations in one or more of the following reservoirs: snow/ice, surface water, soil moisture, groundwater, and wet biomass (e.g., Wahr, Molenaar, & Bryan, 1998). GRACE data have been extensively used to quantify aquifers recharge and depletion rates (Ahmed, Sultan, Yan, & Wahr, 2016;Ahmed et al, 2011;Ahmed et al, 2014;Al-Zyoud, Rühaak, Forootan, & Sass, 2015;Castellazzi, Martel, Galloway, Longuevergne, & Rivera, 2016;Castle et al, 2014;Chinnasamy & Agoramoorthy, 2015;Chinnasamy, Maheshwari, & Prathapar, 2015;Chinnasamy & Sunde, 2016;Döll, Müller Schmied, Schuh, Portmann, & Eicker, 2014;Ellett, Walker, Western, & Rodell, 2006;Feng et al, 2013;Gonçalvès, Petersen, Deschamps, Hamelin, & Baba-Sy, 2013;Huang, Pavlic, Rivera, Palombi, & Smerdon, 2016;Huang et al, 2015;Huo et al, 2016;Jiang, Ferreira, & Chen, 2016;Joodaki, Wahr, & Swenson, 2014;Lakshmi, 2016;Lenk, 2013;Li & Rodell, 2015;Long et al, 2016;Mohamed, Sultan, Ahmed, Yan, & Ahmed, 2016;Rodell, Velicogna, & Famiglietti, 2009;Tiwari, Wahr, & Swenson, 2009; Veit derived groundwater storage (GWS grace ) over the Saq aquifer system ( Figure 1) to explore the natural and anthropogenic drivers of these variations. The calculated GWS grace estimates were then correlated and validated against field measurements from 15 groundwater wells distributed across the Saq aquifer system ( Figure 1 The Saq aquifer system is characterized by a thick sedimentary succession of Cambrian sandstone that overly the crystalline basement rocks of the Red Sea hills.…”

Propagação de secas na bacia do Rio Paraná: do evento climático ao impacto hidrológico

“…O GLDAS abriu um enorme horizonte para estudos em diversas áreas, inclusive na hidrologia, possibilitando estudar variáveis que, normalmente, são menos monitoradas (e.g., umidade do solo, escoamento superficial, etc)(LIU; MISHRA; ZHANG, 2017; SOMOROWSKA, 2017). Uma quantidade significativa de artigos científicos envolvendo o GLDAS, no entanto, é voltada para avaliação de simulações (KęDZIOR;ZAWADZKI, 2016;BAI et al, 2016;AHMED et al, 2016; ou combinação destas com dados do GRACE para estudos com diversas finalidades (e.g., monitoramento do TWS, monitoramento de água subterrânea,estimativa de evapotranspiração, caracterização de secas, cálculo de balanço hídrico, etc)(SEO; LEE, 2016;HUANG et al, 2016;JIANG;FERREIRA;CHEN, 2016;HUO et al, 2016;YANG et al, 2017;LV et al, 2017;AGUTU et al, 2017).…”

“…O produto mais recente lançado pelo CSR-UT em abril de 2015 é o RL05 (Release-05 GRACE Level-2 data products), disponível em <http://www.csr.utexas.edu/grace/gravity/>. De acordo com Ferreira et al (2016), as soluções produzidas pelo CSR apresentaram, numa escala global, as menores incertezas (9.4 mm) em relação àquelas produzidas pelo GFZ (13.7 mm) e JPL (13.2 mm). Destaca-se que cada versão inclui o reprocessamento de todos os dados desde o início da missão, de forma que as estimativas mais recentes apresentam melhorias em relação às anteriores.…”