Time-Varying Gravity Models from GRACE Data over NW Australia - PowerPoint PPT Presentation

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Time-Varying Gravity Models from GRACE Data over NW Australia

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  1. Time-Varying Gravity Models from GRACE Data over NW Australia Lily Yu, IIP/PEI Summer 2010 Research School for the Earth Sciences, ANU Image: NASA/JPL

  2. Background • The geoid • Observing ice melt and droughts • The GRACE satellites • The researchers: NASA/JPL, CSR at University of Texas, CNES/GRGS, GeoForschungsZentrum Potsdam (GFZ)

  3. Error

  4. The Problem Gravity field change, 2002-2008 Gravity field change, 2008-2010

  5. The Problem Gravity field change, 2002-2010 ? Murray-Darling Basin drought, 2001-present

  6. The Problem with the Problem Ground-based gravity surveys by WA Mining and Petroleum River Monitoring Stations Rainfall Monitoring Stations

  7. GRGS ECMWF-based Dealiasing Products

  8. GLDAS Hydrological Model

  9. Further Inquiries • Biomass (NVIS) • National Water Commission’s future mapping projects • Seismological data

  10. Acknowledgements • Paul Tregoning, supervisorRSES, ANU • Emma-Kate PotterRSES, ANU • Tony PurcellRSES, ANU • Charlotte AllenRSES, ANU • IIP/PEI