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Global Terrestrial Network for Glacier: the importance of long-term glacier observations

GEO Summit, Side Event on Cold Regions, 13 Jan 2014. Global Terrestrial Network for Glacier: the importance of long-term glacier observations. Michael Zemp Director WGMS, PD Dr. sc. nat. World Glacier Monitoring Service Department of Geography, University of Zurich Switzerland.

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Global Terrestrial Network for Glacier: the importance of long-term glacier observations

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  1. GEO Summit, Side Event on Cold Regions, 13 Jan 2014 Global Terrestrial Network for Glacier:the importance of long-term glacier observations Michael Zemp Director WGMS, PD Dr. sc. nat. World Glacier Monitoring Service Department of Geography, University of Zurich Switzerland

  2. climate induced glacier changes and related impacts 1894:initiation of internationally coordinated glacier monitoring Visualizations by P. Rastner today Thames Barrier. Photo from Wikimedia Commons. Photos by Focus Online and J. Alean. Photos by J. Alean.

  3. need for independent and authoritative data and information ????

  4. equilibrium line outlines of observational network need for process understanding Winkler (2008) accumulation area area ablation Photos: H. Machguth by H. Machguth

  5. need for (long-term) observation programmes Glacier changeobservationsin length, area, volume, and mass 2005-2010 < 2005 obs. cover Zemp et al. (in prep)

  6. global terrestrial network of glaciers GTN-G

  7. did swiss glaciers really grow last year? • In 2012/13, some Alpine glaciers showed a • minor mass gain but continued frontal retreat • mainly due to a long and partially snowy winter • supported by some summer snow fall events. 2013 WGMS (2013)

  8. http://www.wgms.ch/metadatabrowser.html GTN-G: serving the community with glacier observations More than a century of internationally coordinated glacier monitoring has resulted in an unprecedented dataset on glacier distribution and changes. Major drawback: lack of resources for long-term monitoring www.gtn-g.org ¦ www.wgms.ch ¦ www.nsidc.org ¦ www.glims.org

  9. intro distribution changes alps conclusions 2011 Data sources: WGMS

  10. intro distribution changes alps conclusions Data sources: WGMS

  11. intro distribution changes alps conclusions The Alps Data sources: WGMS, Jacob et al. 2012

  12. intro distribution changes alps conclusions Elevation changes from ICESat Gardner et al. (2013)

  13. intro distribution changes alps conclusions Elevation changes from ICESat Kääb et al. (2013)

  14. intro distribution changesalps conclusions Figure based on data from WGMS (2013)

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