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

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

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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 – PowerPoint PPT presentation

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


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
GRACE Gravity 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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