Deriving scaling factor using a global hydrological model to restore GRACE signals for drought monitoring over China’s Yangtze River basin. & Sneeuw, N. Analysis of GRACE uncertainties by hydrological and hydro-meteorological observations. Geophysical Research Letters 36, doi: 10.1029/2009gl039401 (2009).Jacob, T., Wahr, J., Pfeffer, W. T. & Swenson, S. Recent contributions of glaciers and ice caps to sea level rise. Launching in 2017, GRACE Follow-on (GRACE-FO) will continue GRACE's legacy of tracking Earth's water movement to monitor changes in underground water storage, the amount of water stored in large lakes and rivers, soil moisture, ice sheets and glaciers, and sea level caused by the addition of water to the ocean.
Water Resour. Our study showed the lowest estimate of the GWD rate of ~1 cm/a for the period 2003–2010 due to a lower scaling factor of 0.67 from CLM4.0. Our approach of relating band-pass filtered water fluxes from GRACE via the terrestrial water balance equation to reanalyses output is generally applicable to all continental regions away from the coasts. In Peel, M. C., Finlayson, B. L. & McMahon, T. A. Even though a clear improvement from ERA-Interim to ERA5 is detected, an evaluation of reanalyses remains difficult because of largely negative values for the explained variance. The GWD distribution from PCR-GLOBWB was taken as a priori information for implementing constrained forward modeling. Res. In The daily GRACE data products of ITSG-Grace2018 are publicly available from TU Graz (German Research Centre for Geosciences (GFZ), Potsdam, GermanyYou can also search for this author in GWD rates from the additive approach were higher than those for the scaling factor approach, but lower than those from the forward modeling and multiplicative approaches.
Water Resour. Here, particularly ERA-Interim shows large discrepancies to GRACE in South America in the region around the Paraná river basin and in Colombia, in the west of North America and in Southern China. Greenland's Steenstrup Glacier, with the midmorning sun glinting off the Denmark Strait in the background. Furthermore, GRACE-derived water fluxes can clearly identify improvements realized within ERA5 over its direct predecessor ERA-Interim particularly in equatorial and temperate climate zones. Groundwater is a useful indicator of climate variability and human impacts on the environment. Rodell, M., I. Velicogna, and J. S. Famiglietti (2009), Satellite‐based estimates of groundwater depletion in India, Nature, 460, 999–1002, doi:10.1038/nature08238.Yeh, P. J.-F., Swenson, S. C., Famiglietti, J. S. & Rodell, M. (2006) Remote sensing of groundwater storage changes in Illinois using the Gravity Recovery and Climate Experiment (GRACE). Ramillien, G. L., Frappart, F., Gratton, S. & Vasseur, X. Sequential estimation of surface water mass changes from daily satellite gravimetry data. "From 2002 to 2017, NASA's twin Gravity Recovery and Climate Experiment (GRACE) satellites monitored large-scale groundwater changes all over the globe. Environ. Milne, R.S. Both constrained and unconstrained forward modeling presented in this study can provide reasonable estimates of GWD rates relative to groundwater-level data. You can also search for this author in Environ. Wahr, J., Molenaar, M. & Bryan, F. Time variability of the Earth’s gravity field: Hydrological and oceanic effects and their possible detection using GRACE. The global groundwater crisis. To obtain

Clark, A. Cazenave, J.M. GRACE yields insights into Solid Earth changes from earthquakes glacial isostatic adjustment. Quantifying renewable groundwater stress with GRACE. Klinger, B. GRACE measures changes in mass through their effects on twin satellites … GRACE grew from the recognition that a specially designed mission could observe these changes in water from space, revealing hidden secrets of the water cycle. So human activity can directly cause an increase in the local drying initiated by climate. Accurate GWD estimation is, however, challenging because of uncertainties in GRACE data processing. Issues and Solutions. Scientists at NASA’s Goddard Space Flight Center generate groundwater and soil moisture drought indicators each week. 34, 153–178 (2009).Siebert, S. et al.

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