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Study: Evidence for an Arctic Climate Feedback Loop

Study: Evidence for an Arctic Climate Feedback Loop. By Michael D. Lemonick From Time April 30, 2010. Animals under siege. The article focuses on different problems of the world in Alaska India Thailand Brazil

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Study: Evidence for an Arctic Climate Feedback Loop

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  1. Study: Evidence for an Arctic Climate Feedback Loop By Michael D. Lemonick From Time April 30, 2010

  2. Animals under siege • The article focuses on different problems of the world in AlaskaIndia Thailand Brazil Democratic Republic of Congo Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  3. Alaska • There is a risk of extinction of polar bears • Global warming is the increase in the average temperature of Earth’s near-surface air and oceans since the mid-20th century and its projected continuation Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  4. India • The rapid growing population and economic development are leading to the environmental degradation • The projected population indicates that India will be the first most populous country in the world in the year 2050 Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  5. Thailand • Over the past few decades, Thailand’s dramatic economic growth has produced new environmental challenges • The country now faces problems with air and water pollution, declining wildlife population, deforestation Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  6. Brazil Brazil once had the highest deforestation rate in the world and since 2005 it still has had the largest area of forest removed annually Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  7. Democratic Republic of Congo • Garamba National Park: located in the Democratic Republic of Congo in Africa • The park is also well known for its African elephant domestication • Due to poaching the park was added to the list of World Heritage Sites in Danger in 1996 Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  8. Topics • Climate scientists are professing to know exactly how climate change is playing out • Climate change is real, potentially dangerous and largely due to human activity • The Planet Earth responds to increasing levels of greenhouse gases Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  9. Topics • Nature: the Arctic is warming about twice as fast as the rest of the planet on average (Arctic amplification) • Classic feedback loop: warmer temperature lead to more meltback in sea ice in the summer • The water absorbs energy, leading to even more melting Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  10. Topics • Temperature records from all available sources over the past 20 years (weather station and satellites) • Scientists show that the warming trend is most pronounced near the surface, particulary in the Arctic, rather than at a higher elevation Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  11. Topics • The dominant mechanisms according to which recent climate change has been attributed all result from human activity • They are: • increasing atmospheric concentrations of greenhouse gases • global changes in land surface, such as deforestation • increasing atmospheric concentrations of aerosols Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  12. Topics • The extinction risk of species have becoming very serious due to the effects of global warming • Many species are under threat Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  13. Greenhouse effect • It is caused by atmosphere containing gases that absorb and emit infrared radiation Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  14. SOURCES • http//: www.time.com/time/ (last access 05-2010) • Animals under siege, T. Boucher, Time, April 13, 2009 • Study: evidence for an Arctic climate feedback loop, Michael D. Lemonick, Time, 30 April, 2010 Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

  15. Liceo Scientifico “A. Oriani” Ravenna School year: 2009 – 2010 Interdisciplinary project: Man and the environment-Climate changes and endangered species Subjects involved: English, I.T. Teacher involved: Prof.ssa Siboni Elisabetta Class: 1°C PNI Students involved: Frezzato Simone, Chonati Romo Alejandro Frezzato S. and Chonati A. 1C Liceo Scientifico "A. Oriani" Ra

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