ESA CCI CMUG Integration Meeting , Exeter, UK 2-4 June 2014
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Transcript of ESA CCI CMUG Integration Meeting , Exeter, UK 2-4 June 2014
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The importance of observations for understanding the role of glaciers in the
Earth climate system-
Glaciers_cci contributions to the internationally coordinated glacier monitoring efforts
Michael Zemp
Director WGMS, PD Dr. sc. nat.
World Glacier Monitoring Service,Department of Geography, University of Zurich,
Switzerland
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Fiddlers Ferry coal fired power station near Liverpool, England Photograph: Phil Noble/Reuters
Global climate is changing…
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1862
Findelengletscher, Switzerland, at its Little Ice Age maximum extent
…so are glaciers around the globe
Visualization of Findelengletscher, Zermatt, by P. Rastner
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1894
F.-A. Forel (1841-1912) initiates internationally coordinated glacier observations in 1894
…so are glaciers around the globe
Visualization of Findelengletscher, Zermatt, by P. Rastner
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2010
ESA Glaciers_cci Phase 1
…so are glaciers around the globe
Visualization of Findelengletscher, Zermatt, by P. Rastner
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impacts of glaciers changes on hazards, run-off, and sea level
Photos by J. Alean.Photos by Focus Online and J. Alean.
Thames Barrier. Photo from Wikimedia Commons.
Male, Maledives.Photo from photos4travel.
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Huss et al. (2014)
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
Observations are essential for- setting initial model conditions
- comparing scenario ensembles with real development
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Climate-glacier processes
Glacier distribution
Glacier change rates
Secondary impacts
Grand challenges in climate-glacier research
About 200,000 glaciersdistributed over the globe.
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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FoGWGMS
WGIWGMS / NSIDC
GLIMSNSIDC
Glacier photosNSIDC
Internationally coordinated glacier monitoring
www.wgms.ch ¦ www.nsidc.org ¦ www.glims.org ¦ www.gtn-g.org
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intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
c. 1,000 pages of documentationbut
not (yet) much data products!
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Randolph Glacier “Inventory”
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
Huss & Farinotti (2012)
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Randolph Dataset 2.0
WGI
GLIMS
Randolph
DCW
Randolph Dataset by A. Arendt et al. (2012) from different source main purpose: global SLR modelling vector outlines of different levels of detail and quality limited meta-data (e.g., time stamp, elevation range, length, classification)
How to bridge to last mile to GLIMS database?
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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How (fast) are glaciers changing?
Gardner et al. (2013)
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Data sources: WGMS
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Data sources: WGMS
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Data sources: WGMS, Jacob et al. 2012
The Alps
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Elevation changes from ICESat
Gardner et al. (2013)
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Kääb et al. (2013)
Elevation changes from ICESat
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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www.dlr.de Floricioiu, Jaber and Rott (2012)
Opportunities:oHigh spatial resolutionoCovering entire mountain rangesChallenges:oMountain topographyoHow bridging the last mile?
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion
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Glaciers observations are a fundamental requirement for assessing climate change impacts on glacier hazards, runoff, and global sea level rise.
Growing number of remote sensing data have a great potential for boosting glacier monitoring but requires additional capacities at the international data centers to tap the full potential of these data and to truly link traditional methods with new technologies.
Thereto, the explicit focus of ESA’s Glaciers_cci on monitoring is highly appreciated.
Phase 2 hopefully will produceless documentation but more data products!
intro ¦ glacier distribution ¦ glacier changes ¦ conclusion