Assessing the utility of remote sensing data to accurately estimate changes in groundwater storage

Ahamed, Aakash; Knight, Rosemary; Alam, Sarfaraz; Pauloo, R.; Melton, F. S.

doi:10.1016/j.scitotenv.2021.150635

Cited by 38 publications

(23 citation statements)

References 67 publications

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“…As Ahamed et al. (2021) show, GRACE is quite effective at capturing responses to large recharge events. The similar response in vegetation and water storage in the basin may reflect that these systems are primarily responding to changes in shallow vadose zone soil moisture.…”

Section: Resultsmentioning

confidence: 97%

“…The clear annual signal in these data, like vegetation extent, is in phase with summer precipitation and responds strongly and rapidly to large precipitation events while also showing rapid declines during years with low rainfall. As Ahamed et al (2021) show, GRACE is quite effective at capturing responses to large recharge events. The similar response in vegetation and water storage in the basin may reflect that these systems are primarily responding to changes in shallow vadose zone soil moisture.…”

Section: Hydrological Changesmentioning

confidence: 92%

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Relic Groundwater and Prolonged Drought Confound Interpretations of Water Sustainability and Lithium Extraction in Arid Lands

et al. 2022

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Demand for lithium for batteries is growing rapidly with the global push to decarbonize energy systems. The Salar de Atacama, Chile holds ∼42% of the planet's reserves in the form of brine hosted in massive evaporite aquifers. The mining of these brines and associated freshwater use has raised concerns over the environmental responsibility of lithium extraction, yet large uncertainties remain regarding fundamental aspects of governing hydrological processes in these environments. This incomplete understanding has led to the perpetuation of misconceptions about what constitutes sustainable or renewable water use and therefore what justifies responsible allocation. We present an integrated hydrological assessment using tritium and stable oxygen, and hydrogen isotopes paired with remotely sensed and terrestrial hydroclimate data to define unique sources of water distinguished by residence time, physical characteristics, and connectivity to modern climate. Our results describe the impacts of prolonged drought on surface and groundwaters and demonstrate that nearly all inflow to the basin is composed of water recharged >65 years ago. Still, modern precipitation is critical to sustaining important wetlands around the salar. Recent large rain events have increased surface water and vegetation extents and terrestrial water storage while mining‐related water withdrawals have continued. As we show, poor conceptualizations of these complex hydrological systems have perpetuated the misallocation of water and the misattribution of impacts. These fundamental issues apply to arid regions globally. Our new framework for hydrological assessment in these basins moves beyond calculating gross inputs‐outputs at a steady state to include all compartmentalized stores that constitute “modern” budgets.

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Section: Resultsmentioning

confidence: 97%

Section: Hydrological Changesmentioning

confidence: 92%

Relic Groundwater and Prolonged Drought Confound Interpretations of Water Sustainability and Lithium Extraction in Arid Lands

et al. 2022

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“…This displayed the differences in magnitude and temporal lag between groundwater depletion and recorded subsidence by different sub-basins. Recent water balance approach by Ahamed et al (2022) displayed that integration of various remote sensing data can successfully estimate and monitor groundwater storage changes across spatial scales finer than GRACE. Such efforts to integrate various remote sensing data set.…”

Section: Integration Of Different Remote Sensing Data Setsmentioning

confidence: 99%

“…Recent water balance approach by Ahamed et al. (2022) displayed that integration of various remote sensing data can successfully estimate and monitor groundwater storage changes across spatial scales finer than GRACE. Such efforts to integrate various remote sensing data set.…”

Section: Future Advances and Potential Directionsmentioning

confidence: 99%

Remote Sensing of Groundwater: Current Capabilities and Future Directions

Adams

Reager

Rosen

et al. 2022

Water Resources Research

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Groundwater is Earth's largest reservoir of fresh, liquid water. Accounting for more than 20% of water usage worldwide and 43% of irrigation water (Earman & Dettinger, 2011;Fetter, 2001;Zektser & Everett, 2004), groundwater serves as the primary source of freshwater for over 2 billion people across the globe (Alley et al., 2002;Famiglietti et al., 2011;Gleeson et al., 2012; WWAP, 2015). Its contributions are expected to increase with rising global population and changing climate, as surface water becomes a less reliable resource (FAO, 2005; OECD, 2011; WWAP, 2015). It is estimated that by 2050, 2 billion additional people will need to be fed, increasing demand on agricultural land use for improved rates of food production (OECD, 2011; WWAP, 2015). As climate change continues to alter patterns of drought and regional recharge dynamics, groundwater will continue to establish itself as an increasingly critical component of the water cycle, as groundwater variability directly impacts surface water (

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“…As a result, a nonstationary algorithm for spatial interpolating geophysical corrections has been developed. When the coverage is good, this algorithm extends local trends and admits it to bend to a previous background when the coverage is insufficient (Ahamed et al 2022 ).…”

Section: Phase Ii: Geostatistics and Spatial Analysis Of Aqi Datamentioning

confidence: 99%

Analysis of changes in air pollution quality and impact of COVID-19 on environmental health in Iran: application of interpolation models and spatial autocorrelation

Keshtkar

heidari

Moazzeni

et al. 2022

Environ Sci Pollut Res

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In the global COVID-19 epidemic, humans are faced with a new challenge. The concept of quarantine as a preventive measure has changed human activities in all aspects of life. This challenge has led to changes in the environment as well. The air quality index is one of the immediate concrete parameters. In this study, the actual potential of quarantine effects on the air quality index and related variables in Tehran, the capital of Iran, is assessed, where, first, the data on the pollutant reference concentration for all measuring stations in Tehran, from February 19 to April 19, from 2017 to 2020, are monitored and evaluated. This study investigated the hourly concentrations of six particulate matters (PM), including PM2.5, PM10, and air contaminants such as nitrogen dioxide (NO 2 ), sulfur dioxide (SO2), ozone (O3), and carbon monoxide (CO). Changes in pollution rate during the study period can be due to reduced urban traffic, small industrial activities, and dust mites of urban and industrial origins. Although pollution has declined in most regions during the COVID-19 quarantine period, the PM2.5 rate has not decreased significantly, which might be of natural origins such as dust. Next, the air quality index for the stations is calculated, and then, the interpolation is made by evaluating the root mean square (RMS) of different models. The local and global Moran index indicates that the changes and the air quality index in the study area are clustered and have a high spatial autocorrelation. The results indicate that although the bad air quality is reduced due to quarantine, major changes are needed in urban management to provide favorable conditions. Contaminants can play a role in transmitting COVID-19 as a carrier of the virus. It is suggested that due to the rise in COVID-19 and temperature in Iran, in future studies, the effect of increased temperature on COVID-19 can be assessed.

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Assessing the utility of remote sensing data to accurately estimate changes in groundwater storage

Cited by 38 publications

References 67 publications

Relic Groundwater and Prolonged Drought Confound Interpretations of Water Sustainability and Lithium Extraction in Arid Lands

Relic Groundwater and Prolonged Drought Confound Interpretations of Water Sustainability and Lithium Extraction in Arid Lands

Remote Sensing of Groundwater: Current Capabilities and Future Directions

Analysis of changes in air pollution quality and impact of COVID-19 on environmental health in Iran: application of interpolation models and spatial autocorrelation

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