GRACE temporal resolution - FutureWater

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Overview • GRACE • How does it work and why is it useful • Limitations • Spatial and temporal resolution (orbits) • Aliasing • Impact of spatial filter • Examples • Illustrates strengths and weaknesses • Outlook for the future June 4, 2008 22
The future • GRACE currently projected to last until 2012-2016 • Extended time series are valuable when examining multi-year trends • GRACE follow-on mission expected • Laser ranging system (10 -9 m), • Improved accelerometers • Accuracy of results will improve as background models are refined (ocean, atmosphere, etc.) June 4, 2008 23
Page 1 and 2: Using GRACE as a tool to monitor co
Page 3 and 4: Overview • GRACE • How does it
Page 5 and 6: How does GRACE work Courtesy: NASA
Page 7 and 8: Gravity & Earth System Science Meas
Page 11 and 12: GRACE temporal resolution Jan 2004
Page 13 and 14: Aliasing • Caused by high frequen
Page 15 and 16: Spatial filtering Before filtering
Page 19 and 20: Mississippi Basin 3,247,804 km 2 Bl
Page 21: GRACE results over China 795,000 km

GRACE temporal resolution - FutureWater

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