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What's Happening in the Bathtub?: An Overview of Present-Day Sea Level Change

What's Happening in the Bathtub?: An Overview of Present-Day Sea Level Change. R. Steven Nerem University of Colorado Department of Aerospace Engineering Sciences Colorado Center for Astrodynamics Research Cooperative Institute for Research in Environmental Sciences. Satellite Altimetry.

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What's Happening in the Bathtub?: An Overview of Present-Day Sea Level Change

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  1. What's Happening in the Bathtub?: An Overview of Present-Day Sea Level Change R. Steven Nerem University of Colorado Department of Aerospace Engineering Sciences Colorado Center for Astrodynamics Research Cooperative Institute for Research in Environmental Sciences

  2. Satellite Altimetry Trend = 3.4 mm/year http://sealevel.colorado.edu

  3. Detrended GMSL and MEI

  4. Spatial Variations in Sea Level Rise 1993-2009

  5. GRACEGravity Recovery and Climate Experiment

  6. GRACE Global Ocean Mass Variations

  7. Greenland Mass Change from GRACE Total Greenland ice volume Rate of mass change during April, 2002 – February, 2009 Rate of mass change: All Greenland: -235 Gton/yr South Greenland: -169 Gton/yr North Greenland: -65 Gton/yr 362 Gt/yr = 362 km3/year water = 1 mm/yr sea level rise [Wahr, 2009] -235 Gton/yr = 0.65 mm/yr sea level rise

  8. Greenland Mass Change from GRACE [Wahr, 2009]

  9. Antarctica Mass Change from GRACE Total Antarctic ice volume. April, 2002 – February, 2009 Rate of mass change after removing ICE5G rebound model: All Antarctica: -169 Gton/yr West Antarctica: -128 Gton/yr East Antarctica: -36 Gton/yr Amundsen Sea glaciers Uncertainty of post-glacial rebound correction: All Antarctica: ± 75 km3/yr West Antarctica: ± 20 km3/yr East Antarctica: ± 50 km3/yr -169 Gton/yr = 0.47 mm/yr sea level rise [Wahr, 2009]

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