Rapid climate change
Download
1 / 12

Rapid Climate Change - PowerPoint PPT Presentation


  • 96 Views
  • Updated On :

Rapid Climate Change. Lauren Elmegreen ESP Seminar April 28, 2006. Past Climate: Lake Agassiz. Teller, JT and DW Leverington, 2004. Teller, JT and DW Leverington, 2004. Sea Ice and Abrupt Climate Change. Denton GH et al, 2005. Possible scenario in current conditions….

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Rapid Climate Change' - warrick


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Rapid climate change

Rapid Climate Change

Lauren Elmegreen

ESP Seminar

April 28, 2006


Past climate lake agassiz
Past Climate: Lake Agassiz

Teller, JT and DW Leverington, 2004



Sea ice and abrupt climate change
Sea Ice and Abrupt Climate Change

Denton GH et al, 2005



Future Climate: Models

Schmittner, A., M.Latif and B. Schneider, 2005




Rapid climate change in the media
Rapid climate change in the media

  • “Britain faces big freeze as Gulf Stream loses strength” The Times (Britain), Dec 2005

  • “Failing ocean current raises fears of mini ice age” New Scientist, Nov 2005

  • “Shifting currents renew fears of freezing” The Montreal Gazette, Dec 2005


Summary
Summary

  • Possible reasons for past rapid climate change

    • Sea ice formation in North Atlantic

    • Lake Agassiz

  • Model predictions for the future

    • Models predict gradual changes in THC without a rapid shutdown

    • Increased salinity may compensate for density decreases in Atlantic Ocean


References
References

  • CCNet http://www.staff.livjm.ac.uk/spsbpeis/CCNet-homepage.htm

  • Denton, G.H., et al, 2005. The role of seasonality in abrupt climate change. Quaternary Science Reviews, 24, 1159-1182.

  • Gregory, J.M., et al, 2005. A model intercomparison of changes in the Atlantic thermohaline circulation in response to increasing atmospheric CO2 concentration. Geophysical Research Letters, 32, L12703.

  • Latif, M. et al, 2000. Tropical stabilization of the thermohaline circulation in a greenhouse warming simulation. Journal of Climate, 13, 1809-1813.

  • Schmittner, A., M. Latif and B. Schneider, 2005. Model projections of the North Atlantic thermohaline circulation for the 21st century assessed by observations. Geophysical Research Letters, 32, L23710.

  • Teller, J.T. and D.W. Leverington, 2004. Glacial Lake Agassiz: A 5000 yr history of change and its relationship to the d18O record of Greenland. GSA Bulletin, 116, 729-742.



ad