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- Recommended Citation(s)*:
Rodell, M., J. S. Famiglietti, D. N. Wiese, J. T. Reager, H. K. Beaudoing, F. W. Landerer, and M.-H. Lo. 2019. Trends in Global Freshwater Availability from the Gravity Recovery and Climate Experiment (GRACE). Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H4TT4P2C. Accessed DAY MONTH YEAR.
Rodell, M., J. S. Famiglietti, D. N. Wiese, J. T. Reager, H. K. Beaudoing, F. W. Landerer, and M.-H. Lo. 2018. Emerging Trends in Global Freshwater Availability. Nature 557(7707): 651-659. https://doi.org/10.1038/s41586-018-0123-1.
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GRACE provides data over land and oceans, but the interpretation of GRACE trends data over oceans is more challenging than over land areas. GRACE measures changes in mass, whether it is salt water, freshwater, or the solid earth. Over land the majority of mass change, after removing atmospheric mass changes, is freshwater mass change. To show only trends in terrestrial water availability an ocean mask should be used. SEDAC provides a water bodies mask at 30 minute (approximately 55km) resolution (see https://doi.org/10.7927/H42Z13KG), which is the same resolution as the Trends in Global Freshwater Availability from GRACE, v1 data set.