《全球变暖英文幻灯片课件.ppt》由会员分享，可在线阅读，更多相关《全球变暖英文幻灯片课件.ppt（19页珍藏版）》请在三一办公上搜索。
1、1,Glo,bal War,ming,2,1,2,3,4,Background,Reason,Problem,Solution,目录,CONTENT,3,The,climate,has,been,getting,stea,dily,warmer,and,warmer,in,recent,years.,Background,1,4,The average global temperature,rises,significantly after entering the eighties,Global warming is,coming!,5,There are many reasons of t
2、he,global warming,but it mainly,caused by human activities,Reason,2,6,Initial causes of,temperature,changes,3,4,2,1,Aerosols and soot,Greenhouse gases,Variations in Earths orbit,Solar activity,7,Fossil,fuel,burning,land-use,change,Population,growth,1,Greenhouse gases,CO,2,8,In addition to their dire
3、ct effect by scattering and,absorbing solar radiation,aerosols have indirect,effects on the Earths radiation budget.,2,Aerosols and soot,9,3,Solar activity,The sun,activities cause,volcanic eruption,and produce a,large number of ash,10,4,Variations in Earths orbit,Variations in orbital cycles may in
4、itiate,a new glacial period in the future,though the timing of this depends on,greenhouse gas concentrations as well,as the orbital forcing.,11,Global warming causes all sorts,of problems,Problem,3,12,Extreme weather,Sea level rise,Long-term effects,Ecological systems,1,2,3,4,13,Extreme,weather,Proj
5、ections suggest a probable increase in the frequency and,severity of some extreme weather events,such as heat waves,，,Elnino,（厄尔尼诺）,drought,floods,thunderstorms,hail,（冰,雹）,storm,the heat and dust storms,14,Sea,Level,Rise,19th century,rise at the rate of 0.10 to 0.15 per,one hundred meters,Ice,island
6、s,city disappear,Bring disaster to the coastal areas,15,Terrestrial,（陆地,）,ecosystems,threaten coral reefs,fisheries,protected,species,and other,natural resources of,value to society,Effect the flight of the,migratory birds,affect particular ecosystems,reduced diversity of ecosystems,ocean,ecosystem,
7、1,2,3,Air,16,effects,Long-term,Abrupt climate change,a response from the Earths crust,the rapid release of methane and carbon dioxide,from permafrost,injury and loss of life,a large risk to global and regional food security,Economic and Infrastructure loss,17,Low carbon life,Solution,4,18,?,Mitigati
8、on,?,Adaptation,?,Climate,engineering,Mitigation of climate,reduce greenhouse gas,emissions,or enhance the,capacity of carbon sinks to,absorb GHGs from the,atmosphere,Local adaptation efforts,Enhancing adaptive,capacity,Agricultural production,More spending on irrigation,Weather control,Damming glacial lakes,Geoengineering,Migration,Insurance,solar radiation,management and carbon,dioxide removal.,19,谢谢大家观看,Thanks For Watching,LOGO,
