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Cryosphere components in GTOS networks Wilfried Haeberli Geography Department University of Zurich.

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Presentation on theme: "Cryosphere components in GTOS networks Wilfried Haeberli Geography Department University of Zurich."— Presentation transcript:

1 Cryosphere components in GTOS networks Wilfried Haeberli Geography Department University of Zurich

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3 Global Terrestrial Observing System GTOS cryosphere networks sea ice (GOOS) GTN-G: glaciers GTN-P: permafrost ! GTN-S: snow ! GTN-IS: continental ice sheets

4 Global Terrestrial Observing System GTOS cryosphere networks sea ice (GOOS) GTN-G: glaciers GTN-P: permafrost ! GTN-S: snow ! GTN-IS: continental ice sheets

5 flow velocity 13 km/y flow velocity 7 km/y Jakobshavn Isbrae

6 Ice shelves Canadian Antarctica 1906 Ice Shelf Extent (~10,000 km 2 ) Eureka Copland

7 Ice shelves Canadian Antarctica 1906 Ice Shelf Extent (~10,000 km 2 ) 2008 Ice Shelf Extent (~1000 km 2 ) Eureka Copland

8 Global Terrestrial Observing System GTOS cryosphere networks sea ice (GOOS) GTN-G: glaciers GTN-P: permafrost ! GTN-S: snow ! GTN-IS: continental ice sheets

9 Global Glacier Changes: facts and figures Project management & editing: Michael Zemp, Jaap van Woerden Scientific authors: Michael Zemp, Isabelle Roer, Andreas Kääb, Martin Hoelzle, Frank Paul, Wilfried Haeberli Design, layout, maps & graphics: Diana Rizzolio

10 monitoring principle: integration of in-situ measurements, remote sensingand numerical modelling

11 time base inventory repeat inventory fluctuations of glaciers mass balance length change area/volume/thickness change space glacier inventories mass balance length change area/volume/thickness change

12 UNEP press release : new record loss: m w.e. average loss rate doubled since 2000 previous record (1998) exceeded in 2003, 2004, 2006 only 1 positive balance (Echaurren) WGMS 2008

13 Zemp et al. (2007)

14 Recession of Morteratsch Glacier, Switzerland, between 1985 and Source: J. Alean, SwissEduc (www.swisseduc.ch) / Glaciers online (www.glaciers-online.net) Glacier length changes

15 DEM-differencing: SRTM - DTM 25

16 GlobGlacier European Space Agency (ESA) GLIMS Global Land Ice Measurement from Space Baffin Island Paul glacier inventories/ satellite observations

17 Glacier distribution around the world Zemp et al. (2007), based on Dyurgerov and Meier (2005)

18 Noetzli 2008 Ellesmere Island, Canadian Arctic

19 UN Organisations

20 annual report swiss offer gtn-g general assembly nc Launch of GTN-G website

21 New GTN-G meta-data browser Data layers:  length change  mass balance  volume change  special events  glacier maps  WGI  GLIMS  glacier photograph collection Interactive map interface showing FoG (brown dots), WGI (blue dots) and GLIMS (pink polygons) data

22 General cryosphere: Establishment of GTN-S (snow) and GTN-IS (continental ice sheets) has high priority how about ice shelves (sea ice/GTNG/GTN-IS) and outlet glaciers (GTN- G/GTN-IS)? GTN-G: Future strategy/Recommendations GTN-G operates with a well established, tiered/integrative monitoring strategy, which should continue and may serve as a model for other GTNs; Quality ranking should be introduced with respect to in-situ measurements (especially glacier mass balance) GTN-G representatives are involved in IPCC work and should formally be consulted in the review process for future assessment reports Questions/guidance/feedbacks from the GTOS SC GTOS SC to agree with organisational structure and lead responsibility of GTN-G as developed by the partner institutions (WGMS, NSIDC, GLIMS) and IACS/IUGG/ICSU GTOS SC to transfer the overall responsibility for GTN-G to GTN-G Steering Committee Proposed actions to be endorsed by GTOS SC Agreements on institutional responsibilities and lead structure of IACS


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