BENEMELT - melting of Dronning Maud Land ice shelves: a combined modelling and observational approach - by Jan Lenaerts

Transcript

1. BENEMELT melting of Dronning Maud Land ice shelves: a combined modelling and observational approach Jan Lenaerts InBev-Latour Antarctica Fellowship Brussels – 17 September 2014 Melt  ponds  on     Melt ponds on Ross ice shelf, late summer
2. Larsen B ice shelf break-up 31 january – 7 march 2002 Brussels
3. high temperatures in summer surface melt meltwater ponding, fracturing ice shelf breaking increasing ice discharge sea level rise
4. Ice shelf health A M In the throu and a evolu depe inclu pack The melt resul chan docu modi Arthe 38 fir K 206 cold, little melt warm, more melt
5. Antarctic ice shelf health (in the model world) unhealthy very healthy healthy in 2100 in 2200 now
6. but what about the real world?
7. Measuring ice shelf health 32 cm 18 cm iWS new-generation compact weather station
8. radar ice coring
9. Melting changes snow dry snow – melt – wet snow absorbs more heat lower albedo
10. fieldwork observations satellite data climate models estimating ice shelf health present & future vulnerability of East Antarctica to climate change
11. Collaboration my home base funding & logistics remote sensing (KUL) my work base climate modelling weather station development
12. Thanks! •  To the InBev-Baillet Latour fund (for this fellowship) •  To IPF (for this opportunity and logistics) •  To my colleagues at IMAU/KUL (for their brains) •  To family and friends (for their support) Follow my adventure Via twitter: @lenaertsjan Via IPF: www.polarfoundation.org E-mail: j.lenaerts@uu.nl