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Abrupt Climate Change

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snana
16 diapositives · 323 Views · Sep 07, 2014

Abrupt Climate Change. Review of last lecture. Mean state: The two basic regions of SST? Which region has stronger rainfall? What is the Walker circulation? Two types of ocean upwelling Mean state: ocean-atmosphere feedback ENSO: Which region has warm SST anomaly during El Nino? 4-year period.

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  1. Abrupt Climate Change

  2. Review of last lecture • Mean state: The two basic regions of SST? Which region has stronger rainfall? What is the Walker circulation? Two types of ocean upwelling • Mean state: ocean-atmosphere feedback • ENSO: Which region has warm SST anomaly during El Nino? 4-year period. • Existing ENSO theories • AMO and thermohaline circulation

  3. Global connections

  4. The most common atmospheric circulation structure H L Radiation Convection Conduction Cooling or No Heating Heating Greenhouse Gases Pollution Clouds Precipitation (Latent heat) Latent/Sensible H L Biosphere Land/Ocean/Ice/Stratosphere Feedback • Imbalance of heating • Imbalance of temperature • Imbalance of pressure •  Wind

  5. Projected Change in Global Mean Temperature

  6. Abrupt climate change and tipping point– Lesson from Earth’s climate history

  7. Termination of the Younger Dryas cold event and last ice age 11,600 years ago

  8. Abrupt climate change and history/politics- Collapse of Maya civilization and Chinese ancient dynasties Droughts

  9. Bifurcation and tipping point

  10. Movie timeA global warning?

  11. Examples of tipping points

  12. Interactions among tipping points

  13. Mitigation of global warming: Kyoto protocol • Negotiated in 1997. Commits parties to internationally binding emission reduction targets. • “Common but differentiated responsibilities” • Specific reduction targets for developed countries • Measures to slow the growth of emissions in developing countries • Non-parties: • Canada • USA • Andorra • South Sudan • Palestine • Vatican City

  14. Green economy

  15. Summary • Past abrupt climate change • Tipping points • Future abrupt climate change • Mitigation: International (Kyoto Protocol), Green economy (Renewable energy, Sustainable transportation, Green buildings, Energy-efficient industry and carbon capture, Land management, afforestation, waste management)

  16. Work cited • http://www.ncdc.noaa.gov/paleo/ctl/abrupt.html • http://intercongreen.com/2010/03/15/green-building-ebbs-slightly-in-recession-but-sentiment-remains-strong/ • http://nimbuseco.com/2013/01/deforestation-and-pollution-facts/ • http://greenbalkans.org/category.php?language=en_EN&cat_id=63 • http://www.nrcs.usda.gov/wps/portal/nrcs/detail/ia/newsroom/releases/?cid=nrcs142p2_011847 • http://www.csiro.au/en/Portals/Multimedia/On-the-record/Megan-Clark-presentation-20090526-generating-industries/Post-Combustion-Carbon-Capture.aspx • http://economistsview.typepad.com/economistsview/2005/09/the_consumer_dr.html • http://nca2009.globalchange.gov/human-health • http://yosemite.epa.gov/ee/epa/eerm.nsf/vwAN/EE-0564-112.pdf/$file/EE-0564-112.pdf • http://livinggreenmag.com/2012/06/13/climate-change/scientists-warn-that-earth-is-close-to-climate-tipping-point/ • http://www.cnn.com/2013/05/29/opinion/mystreet-digital-anthropology/ • http://commons.wikimedia.org/wiki/File:World-airline-routemap-2009.png