Water in the Balance

  title={Water in the Balance},
  author={J. S. Famiglietti and Matthew Rodell},
  pages={1300 - 1301}
Satellite data may enable improved management of regional groundwater reserves. Earth's climate is changing, and so is its hydrologic cycle. Recent decades have witnessed rising rates of global precipitation, evaporation, and freshwater discharge (1). Extreme flooding is occurring with greater intensity and frequency in some regions; in others, extreme drought is becoming more common (2). Most climate models indicate that by the end of this century, the dry regions of the world will become… 
Spatiotemporal evolution of water storage changes in India from the updated GRACE‐derived gravity records
Investigating changes in terrestrial water storage (TWS) is important for understanding response of the hydrological cycle to recent climate variability worldwide. This is particularly critical in
Hydrologic Mass Changes and Their Implications in Mediterranean-Climate Turkey from GRACE Measurements
Drought analysis, spatial mass distribution, long-term mass change, and impact on TWS variation from the parameter scale (e.g., precipitation, rainfall rate, evapotranspiration, soil moisture) to the climatic change perspective are investigated.
Decreasing water resources in Southeastern U.S. as observed by the GRACE satellites
Changing water quantities and location can be estimated using the Gravity Recovery and Climate Experiment (GRACE) satellites. By measuring differences in the Earth’s gravity, the satellites provide
Analysis of groundwater level variations and water balance in the area of the Sudety mountains
Water is one of the most important components of the environment, having a direct effect on the maintenance of life on the Earth. In this paper, analysis of groundwater level variations, water
Modeling the depletion of groundwater storage over time in the Levant: lessons learned from a water-stressed region
Globally, the demand for water is continuously increasing, placing many regions under the burden of water stress thus leading to transboundary water conflicts and overexploitation of existing water
Groundwater storage dynamics in the world's large aquifer systems from GRACE: uncertainty and role of extreme precipitation
Abstract. Under variable and changing climates groundwater storage sustains vital ecosystems and enables freshwater withdrawals globally for agriculture, drinking water, and industry. Here, we assess
Terrestrial total water storage dynamics of Australia's recent dry and wet events
The occurrence of hydrological cycle intensification during the study period in Australia exhibited strong spatial variations: the wet areas got wetter while the dry areas became drier and in southeastern Australia TWS changes over time showed sudden extreme responses to both events.
Groundwater depletion during drought threatens future water security of the Colorado River Basin
Analysis of observations from the NASA Gravity Recovery and Climate Experiment mission indicates that groundwater may comprise a far greater fraction of Basin water use than previously recognized, and that its disappearance may threaten the long-term ability to meet future allocations to the seven Basin states.


Dwindling groundwater resources in northern India, from satellite gravity observations.
Northern India and its surroundings, home to roughly 600 million people, is probably the most heavily irrigated region in the world. Temporal changes in Earth's gravity field in this region as
Ocean Salinities Reveal Strong Global Water Cycle Intensification During 1950 to 2000
50 years of observations of sea surface salinity data are examined and show that ocean salinity patterns express an identifiable fingerprint of an intensifying water cycle, suggesting that a substantial intensification of the global water cycle will occur in a future 2° to 3° warmer world.
Global terrestrial water storage capacity and flood potential using GRACE
Terrestrial water storage anomaly from the Gravity Recovery and Climate Experiment (GRACE) and precipitation observations from the Global Precipitation Climatology Project (GPCP) are applied at the
Changes in precipitation with climate change
There is a direct influence of global warming on precipitation. Increased heating leads to greater evaporation and thus surface drying, thereby increasing the intensity and duration of drought.
Groundwater depletion in the Middle East from GRACE with implications for transboundary water management in the Tigris-Euphrates-Western Iran region
Observations from the GRACE satellite mission are used to evaluate freshwater storage trends in the north-central Middle East, including portions of the Tigris and Euphrates River Basins and western Iran, from January 2003 to December 2009 to indicate that groundwater losses are the major source of this trend.
Robust Responses of the Hydrological Cycle to Global Warming
Using the climate change experiments generated for the Fourth Assessment of the Intergovernmental Panel on Climate Change, this study examines some aspects of the changes in the hydrological cycle
GRACE Measurements of Mass Variability in the Earth System
Geoid variations observed over South America that can be largely attributed to surface water and groundwater changes show a clear separation between the large Amazon watershed and the smaller watersheds to the north.
Assimilation of GRACE Terrestrial Water Storage Data into a Land Surface Model
The NASA Gravity Recovery and Climate Experiment (GRACE) system of satellites provides observations of large-scale, monthly terrestrial water storage (TWS) changes. In. this presentation we describe
Coping with the curse of freshwater variability
This work discusses interlinked roles of institutions, infrastructure, and information in managing the risks of variable and unpredictable freshwater resources and the challenges of coping with those risks.