Sea Level Rise and Disappearing Islands: Myth or Reality?

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University of Bath, 2008

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  • Get rich quick scheme. (1) Cut down enough costal trees to cause land erosion (2) wait for that erosion to cause sea water to wash up further into your beaches. (3) Whine and bleat to western governments that this is `man made climate change` and that they must give us millions of dollars.
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Sea Level Rise and Disappearing Islands: Myth or Reality?

  1. 1. Sea level rise and disappearing islands: myth or reality? <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas
  2. 2. Sea level rise and disappearing islands: myth or reality? Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>
  3. 3. How fast are sea levels rising? Source: UNEP/GRID-Arendal, 2007 UNEP/GRID-Arendal Maps and Graphics Library
  4. 4. Sources of sea level rise Source: IPCC, 2007 Climate Change 2007: The Physical Science Basis Cambridge: Cambridge University Press
  5. 5. Trends in sea level rise Source: IPCC, 2007
  6. 6. Trends in sea level rise Source: IPCC, 2007
  7. 7. Projections of the future Source: IPCC, 2007 Climate Change 2007: The Physical Science Basis Cambridge: Cambridge University Press
  8. 8. Projections of the future Photo: New Scientist , 2007 ‘ The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases, indicates that glacial sliding is enhanced by rapid migration of surface meltwater to the ice-bedrock interface.’ Zwally et al., 2002. Surface Melt–Induced Acceleration of Greenland Ice-Sheet Flow. Science , 297 : 218-222.
  9. 9. Projections of the future Source: UNEP, 2007 State-and-trends of the environment: 1987-2007 GEO-4 Report
  10. 10. Trends in sea level rise Source: IPCC, 2007
  11. 11. Trends in sea level rise Source: IPCC, 2007
  12. 12. Long-term trends in sea levels Source: Global Warming Art Project, 2005 Fleming et al., 1998. Earth and Planetary Science Letters 163 (1-4): 327-342. Milne et al., 2005. Quaternary Science Reviews 24 (10-11): 1183-1202. 
  13. 13. Long-term trends in sea levels Source: Holzer, 2002 Lecture notes for ‘Biology 1510’ unit, Georgia Institute of Technology Source: Milne, 2003 Reproduced in the book Underworld by Graham Hancock
  14. 14. Regional variation in sea level rise Source: IPCC, 2007 Climate Change 2007: The Physical Science Basis Cambridge: Cambridge University Press
  15. 15. Sea level rise and disappearing islands: myth or reality? Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>
  16. 16. Sea level rise and disappearing islands: myth or reality? Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>
  17. 17. Tide gauges Photo: Australian National Tidal Centre, 2006 Sea level F ine R esolution A coustic M onitoring E quipment SEAFRAME :
  18. 18. Tide gauges Source: IPCC, 2007 Climate Change 2007: The Physical Science Basis Cambridge: Cambridge University Press
  19. 19. Satellite altimetry Image: EUMETSAT, 2008 <ul><li>Ocean altimetry missions: </li></ul><ul><li>TOPEX / Poseidon: 1992 - 2005 </li></ul><ul><li>Jason-1: 2001 - present </li></ul><ul><li>Jason-2: Provisional launch date June 2008 </li></ul>
  20. 20. Short animation of the Jason-2 satellite in action: EUMETSAT Multimedia Gallery Source: EUMETSAT, 2008
  21. 21. TOPEX / Poseidon data Source: AVISO, 2008
  22. 22. TOPEX / Poseidon data Source: NASA Jet Propulsion Laboratory, 2008
  23. 23. Sea level rise and disappearing islands: myth or reality? Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>
  24. 24. Sea level rise and disappearing islands: myth or reality? Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>
  25. 25. Source: Cartoonstock.com, 2002 Cartoon by Dave Allen
  26. 26. Image: NGDC, 2006 Tuvalu Source: Juriaanbooij.com, 2007 Photograph by Juriaan Booij
  27. 27. Source: Worldviewofglobalwarming.org, 2005 Photographs by Gary Braasch
  28. 28. Image: NGDC, 2006 Singapore Tuvalu
  29. 29. Source: Picturecorrect.com, 2007 Photograph by David Cheong
  30. 30. Sea level rise and disappearing islands: myth or reality? <ul><li>How fast are sea levels rising? </li></ul><ul><li>How are sea levels measured? </li></ul><ul><li>Which islands are most affected? </li></ul>Source: Wikipedia Commons, 2006 Photograph by Shahee Ilyas
  31. 31. References AUSTRALIAN NATIONAL TIDAL CENTRE, 2006. Pacific country report on sea level and climate: Their present state. Tuvalu, June 2006 [online]. Available at: http://www.bom.gov.au/ntc/IDO60033/IDO60033.2006.pdf [Accessed 17 April 2008]. BBC, 2007. Measuring sea level rise from space [online]. BBC , 31 July. Available at: http://news.bbc.co.uk/1/hi/sci/tech/6922312.stm [Accessed 17 April 2008]. BBC, 2008. The ebb and flow of seal level rise [online]. BBC , 22 January. Available at: http://news.bbc.co.uk/1/hi/sci/tech/7195752.stm [Accessed 12 April 2008]. EUMETSAT, 2008. Jason-2 Launch Diary [online]. Available at: http://www.eumetsat.int/Home/Main/Media/MultimediaGallery/index.htm?l=en [Accessed 17 April 2008]. ESA, 2006. Radar altimetry tutorial [online]. Available at: http://earth.esa.int/brat/index.html [Accessed 17 April 2008]. GARY BRAASCH, 2005. World view of global warming: Rising sea levels [online]. Photographs by Gary Braasch. Available at: http://www.worldviewofglobalwarming.org/pages/rising-seas.html [Accessed 17 April 2008]. IPCC, 2007. Climate Change 2007: The Physical Science Basis . Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.)]. Cambridge: Cambridge University Press. JURIAAN BOOIJ, 2007. The Sinking Of Tuvalu [online]. Photograph by Juriaan Booij. Available at: http://www.juriaanbooij.com/ [Accessed 17 April 2008]. NATIONAL GEOPHYSICAL DATA CENTRE (NGDC), 2006. Surface of the Earth [online]. Available at: http://www.ngdc.noaa.gov/mgg/image/2minsurface/1350/ [Accessed 17 April 2008]. NEW SCIENTIST, 2002. Warming speeds ice sheet flow in weeks. New Scientist , 7 June. PICTURECORRECT.COM, 2007. Reflections of the Central Business District [online]. Photograph by David Cheong. Available at: http://www.picturecorrect.com/wallpaper/singapore/singapore_1024x768.htm [Accessed 17 April 2008]. ROBERT ROHDE, 2005. Post-glacial sea level rise [online] . Global Warming Art Project. Available at: http://www.globalwarmingart.com/wiki/Sea_Level_Gallery [Accessed 16 April 2008]. UNEP/GRID-Arendal, 2007. Trends in sea level, 1870-2006 [online]. UNEP/GRID-Arendal Maps and Graphics Library. Available at: http://maps.grida.no/go/graphic/trends-in-sea-level-1870-2006 [Accessed 17 April 2008]. WIKIPEDIA COMMONS, 2006. Mal é , capital of Maldives [online]. Photograph by Shahee Ilyas. Available at: http://commons.wikimedia.org/wiki/Image:Male-total.jpg [Accessed 17 April 2008]. ZWALLY, H.J., ABDALATI, W., HERRING, T., LARSON, K., SABA, J., STEFFEN, K., 2002. Surface Melt–Induced Acceleration of Greenland Ice-Sheet Flow. Science , 297, pp. 218-222.

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