Monitoring Earths ice sheets from space Andrew Shepherd School of Geosciences, Edinburgh.

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Presentation transcript:

Monitoring Earths ice sheets from space Andrew Shepherd School of Geosciences, Edinburgh

Monitoring Earths ice sheets from space Climate change Satellite observations Ice Sheets and Sea level

Monitoring Earths ice sheets from space Climate change

Monitoring Earths ice sheets from space Slow climate change Climate Change Mt Kilimanjaro, 1993

Monitoring Earths ice sheets from space Slow climate change Climate Change Mt Kilimanjaro, 2000

Monitoring Earths ice sheets from space Abrupt climate change Sea level contribution of Antarctica & GreenlandClimate Change

Monitoring Earths ice sheets from spaceClimate Change Abrupt climate change Larsen Ice Shelf, 2002

Monitoring Earths ice sheets from space Abrupt climate change Larsen embayment, 2005 Climate Change

Monitoring Earths ice sheets from space Domack et al., 2005 Climate Change Abrupt climate change Larsen sea bed, 2005

Monitoring Earths ice sheets from space IPCC, 2001 IPCC Assessment reports (1990, 1995, 2001) Global warming 0.6  C rise since 1900 Climate Change

Monitoring Earths ice sheets from space IPCC, 2001 Global sea level rise IPCC Assessment reports (1990, 1995, 2001) 15 cm rise since 1900 Climate Change

Monitoring Earths ice sheets from space Thermal expansion Glaciers & ice caps Greenland Antarctica Measured sea level Climate Change

Monitoring Earths ice sheets from spaceClimate Change

Monitoring Earths ice sheets from spaceClimate Change

Monitoring Earths ice sheets from space Satellite observations

Monitoring Earths ice sheets from space AltimetryInterferometryGravimetry Monitoring Earths ice sheets from space

Satellite observations Altimetry

Monitoring Earths ice sheets from space Mass change from volume change Satellite observations Altimetry

Monitoring Earths ice sheets from spaceSatellite observations Interferometry

Monitoring Earths ice sheets from spaceSatellite observations Interferometry

Monitoring Earths ice sheets from space Mass change from glacier flow Satellite observations Interferometry

Monitoring Earths ice sheets from spaceSatellite observations Gravimetry

Monitoring Earths ice sheets from space Mass change from orbit change Satellite observations Gravimetry

Monitoring Earths ice sheets from space Sea level contribution

Monitoring Earths ice sheets from space 343 km 3 ~ 1mm global sea level = 1 km Sea level 1 km 3 = 270 pints per person =

Monitoring Earths ice sheets from space Greenland

Monitoring Earths ice sheets from spaceGreenland 0.0 to 0.6 mm per year

Monitoring Earths ice sheets from spaceGreenland

Monitoring Earths ice sheets from space Antarctica

Monitoring Earths ice sheets from spaceAntarctica -0.1 to +0.4 mm per year

Monitoring Earths ice sheets from spaceAntarctica

Monitoring Earths ice sheets from space Satellite observations reveal sudden and recent changes in ice sheet flow Climate models do not include these processes Sea level projections are therefore of limited value Summary

Monitoring Earths ice sheets from space UK today Summary

Monitoring Earths ice sheets from space UK today No Polar Ice Sheets Summary

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