토토 승무패PHYSICS/BK21 Colloquium[09.11.20]
관련링크
본문
| “Climate Change, Environment, and Science” Ø* Speaker :토토 승무패Prof. In Soo Ko [POSTECH] Ø* Place : Demonstration Lecture Hall 122,토토 승무패Postech Information Research Laboratories Ø* Date & Time : Nov,토토 승무패20(Fri)토토 승무패4:00 ~ 5:00 pm ØAbstract Since modern life style was started with many home appliances such as refrigerator and air conditioner, the토토 승무패quality토토 승무패of토토 승무패our토토 승무패life토토 승무패improved토토 승무패dramatically.토토 승무패However,토토 승무패refrigerating medium at that time was either sulfur dioxide or methyl formate, which토토 승무패is토토 승무패either토토 승무패highly toxic or flammable. To replace such dangerous gases, Chloroflourocarbon토토 승무패(CFC)토토 승무패was introduced in 1930s. Because of their stable properties, CFCs called토토 승무패Freon토토 승무패had토토 승무패been used widely from refrigerating medium to fire extinguisher to토토 승무패cheap토토 승무패solvent.토토 승무패Unknown to then scientists, Freons were migrated from atmosphere to stratosphere, or the ozone layer. With strong UV light from Sun, Chlorine atoms were freed토토 승무패from토토 승무패CFCs토토 승무패and토토 승무패they started to destroy the ozone layer seriously. To prevent clear and present danger from above, international treaty was set up and CFCs were banned to produce. This treaty is called “Montreal Protocol.” Similar situation토토 승무패is토토 승무패now토토 승무패repeating토토 승무패to토토 승무패Earth.토토 승무패It토토 승무패is토토 승무패called “Global Warming.” It is believed토토 승무패to토토 승무패be토토 승무패triggered토토 승무패by토토 승무패so토토 승무패called토토 승무패green토토 승무패house토토 승무패gases (GHG: mostly carbon dioxide and methane). Another international effort, called토토 승무패Kyoto Protocol, to reduce the concentration of such GHGs is undergoing.토토 승무패We토토 승무패will토토 승무패discuss about what is Kyoto Protocol and how much it will influence to our future. Contact Person : Prof. Ki Bong Lee (054-279-2068,kibong@postech.ac.kr) |
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