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Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 1
Andrew Shepherd1, Duncan Wingham2, Eric Rignot3
1Scott Polar Research Institute2University College London3Jet Propulsion Laboratory
Warm ocean is eroding WAIS
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 2
Andrew Shepherd1, Duncan Wingham2, Eric Rignot3
1Scott Polar Research Institute2University College London3Jet Propulsion Laboratory
Warm ocean is eroding WAIS…consistently
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 3
Andrew Shepherd1, Duncan Wingham2, Eric Rignot3
1Scott Polar Research Institute2University College London3Jet Propulsion Laboratory
Warm ocean is eroding WAIS…consistently…at a constant rate
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 4
Grounding line retreat
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 5
Elevation change (m / year)
-3 0Ice speed (km / year)
0 2.5
Grounded ice thinning
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 6
PIG acceleration
Joughin et al., GRL, 2003
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 7
Ice shelf lowering
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 8
Ice shelf lowering
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 9
Ice shelf thinning
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 10
Steady state melting
After Joughin et al., GRL, 2003
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 11
Net melting
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 12
Oceanographic data
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 13
Oceanographic data
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 14
Oceanographic data
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 15
Oceanographic data
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 16
Ocean melting
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 17
Glacier mass balance
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 18
Ice shelf mass balance
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 19
Total mass balance
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 20
Constant sea level rise
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 21
Constant sea level rise
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 22
Constant sea level rise
Warm ocean is eroding WAIS
1st October WAIS 2004 Slide 23
Constant sea level rise