Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 1 Andrew Shepherd 1, Duncan Wingham 2, Eric Rignot 3 1 Scott Polar Research Institute 2 University.

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Presentation transcript:

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 1 Andrew Shepherd 1, Duncan Wingham 2, Eric Rignot 3 1 Scott Polar Research Institute 2 University College London 3 Jet Propulsion Laboratory Warm ocean is eroding WAIS

1 st OctoberWAIS 2004 Slide 2 Andrew Shepherd 1, Duncan Wingham 2, Eric Rignot 3 1 Scott Polar Research Institute 2 University College London 3 Jet Propulsion Laboratory Warm ocean is eroding WAIS…consistently

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 3 Andrew Shepherd 1, Duncan Wingham 2, Eric Rignot 3 1 Scott Polar Research Institute 2 University College London 3 Jet Propulsion Laboratory Warm ocean is eroding WAIS…consistently…at a constant rate

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 4 Grounding line retreat

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 5 Elevation change (m / year) -3 0 Ice speed (km / year) Grounded ice thinning

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 6 PIG acceleration Joughin et al., GRL, 2003

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 7 Ice shelf lowering

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 8 Ice shelf lowering

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 9 Ice shelf thinning

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 10 Steady state melting After Joughin et al., GRL, 2003

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 11 Net melting

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 12 Oceanographic data

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 13 Oceanographic data

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 14 Oceanographic data

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 15 Oceanographic data

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 16 Ocean melting

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 17 Glacier mass balance

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 18 Ice shelf mass balance

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 19 Total mass balance

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 20 Constant sea level rise

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 21 Constant sea level rise

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 22 Constant sea level rise

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 23 Constant sea level rise