delft2013rw
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On 17/10/2013 TU Delft Climate Institute organised the symposium The Greenland and Antarctic ice sheets: present, future, and unknowns. This is one of the four presentations given there. http://www.tudelft.nl/nl/actueel/agenda/event/detail/symposium-tu-delft-climate-institute-17th-october-2013/TRANSCRIPT
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10/18/13 1
Review editor chapter 13 WGI
Roderik van de Wal, Utrecht University
Sea Level Change in AR5
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10/18/13 2
What drives sea level changes?
Figure 13.1 AR5
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10/18/13 3
Antarctica+Greenland
AR4
Antarctica more constrained, Greenland decay rate fasterShepherd et al 2012
AntarcticaGreenland
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10/18/13 4
Cryospheric contribution
Extended version of Fig 4.17 AR5
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10/18/13 5
Future projections
Figure 7b, SPM
+40-50%
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10/18/13 6
AR5 versus AR4
So for +4K 1/3 caused by increased response; 2/3 by higher offset! (commitment) ice sheets..
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10/18/13 7
Concluding remarks-Sea level recent passed reasonably explained
-Sea level response per degree increased
-Sea level regional variable
-Sea level projections higher
Unknowns-coastal processes-temporal variability-low probability issues