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5-5. Global warming. 5-5-1. Introduction Definition: Rise in the average temperature of the Earth’s surface (mainly air T). From the Environmental Science point of view, the continuous increase in the air temperature due to the air pollutants, mostly so-called greenhouse gases
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5-5. Global warming • 5-5-1. Introduction • Definition: • Rise in the average temperature of the Earth’s surface (mainly air T). • From the Environmental Science point of view, the continuous increase in the air temperature due to the air pollutants, mostly so-called greenhouse gases • Greenhouse effect & gases: • Absorb and reemit infrared in the atmosphere and warm the lower atmosphere and surface Cycling effect • Abundance (& contribution): H2O (36-72%) > CO2(9-26%) > CH4(4-9%) > N2O > O3(3-7%) (Kiehland Trenberth, 1997).
http://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmthhttp://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmth
http://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmthhttp://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmth
Greenhouse effect schematic showing energy flows between space, the atmosphere, and Earth's surface. Energy exchanges are expressed in watts per square meter (W/m2). http://en.wikipedia.org/wiki/Global_warming
5-5-2. Dimming Effect • Cooling effect against greenhouse effect, due to the reflection and/or dimming of the sunlight to the surface because of the presence of cloud, snow & ice on the surface, dust, or smog in the air also a cycling effect • May be called ‘albedo effect’, or collectively ‘anti-greenhouse effect’ • The balance between the greenhouse and dimming effect determine the temperature of the Earth’s surface Reason for “not boiling”
http://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmthhttp://www.azimuthproject.org/azimuth/show/Blog+-+a+quantum+of+warmth
http://www.the-m-factory.com/portfolio/illustrated/illustrated_08.htmlhttp://www.the-m-factory.com/portfolio/illustrated/illustrated_08.html
http://www.orbeo.com/-Market-overview-.html http://www.fern.org/pt-br/node/5188
http://www.ei.lehigh.edu/learners/cc/greenhouse/Diagram3.png
5-5-4. Global Temperature Change: Is it real? http://solar-center.stanford.edu/sun-on-earth/glob-warm.html
http://solar-center.stanford.edu/sun-on-earth/glob-warm.html
5-5-5. Global Warming Impacts http://solar-center.stanford.edu/sun-on-earth/glob-warm.html
5-5-6. Measures • Use alternative energies (new, renewable energies) • Reducing fossil fuel use • Increasing fossil fuel efficiency • Carbon capture & storage (CCS) • International collaboration (Kyoto protocol, CER-certified emission reduction, carbon emission trade)