올림픽 토토PHYSICS/BK21 Colloquium[09.11.20]
관련링크
본문
| “Climate Change, Environment, and Science” Ø* Speaker :올림픽 토토Prof. In Soo Ko [POSTECH] Ø* Place : Demonstration Lecture Hall 122,올림픽 토토Postech Information Research Laboratories Ø* Date & Time : Nov,올림픽 토토20(Fri)올림픽 토토4:00 ~ 5:00 pm ØAbstract Since modern life style was started with many home appliances such as refrigerator and air conditioner, the올림픽 토토quality올림픽 토토of올림픽 토토our올림픽 토토life올림픽 토토improved올림픽 토토dramatically.올림픽 토토However,올림픽 토토refrigerating medium at that time was either sulfur dioxide or methyl formate, which올림픽 토토is올림픽 토토either올림픽 토토highly toxic or flammable. To replace such dangerous gases, Chloroflourocarbon올림픽 토토(CFC)올림픽 토토was introduced in 1930s. Because of their stable properties, CFCs called올림픽 토토Freon올림픽 토토had올림픽 토토been used widely from refrigerating medium to fire extinguisher to올림픽 토토cheap올림픽 토토solvent.올림픽 토토Unknown to then scientists, Freons were migrated from atmosphere to stratosphere, or the ozone layer. With strong UV light from Sun, Chlorine atoms were freed올림픽 토토from올림픽 토토CFCs올림픽 토토and올림픽 토토they 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 situation올림픽 토토is올림픽 토토now올림픽 토토repeating올림픽 토토to올림픽 토토Earth.올림픽 토토It올림픽 토토is올림픽 토토called “Global Warming.” It is believed올림픽 토토to올림픽 토토be올림픽 토토triggered올림픽 토토by올림픽 토토so올림픽 토토called올림픽 토토green올림픽 토토house올림픽 토토gases (GHG: mostly carbon dioxide and methane). Another international effort, called올림픽 토토Kyoto Protocol, to reduce the concentration of such GHGs is undergoing.올림픽 토토We올림픽 토토will올림픽 토토discuss 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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