1. The Greenhouse effect http://www.gov.mb.ca/agriculture/soilwater/climate/images/indexfig1.jpg Without the greenhouse effect, the earth would be a frozen ball

2. http://epa.gov/climatechange/ghgemissions/sources.html Total U.S. Greenhouse Gas Emissions by Economic Sector in 2010

3. 1824 - Joseph Fourier discovered the greenhouse effect. 1859 - John Tyndall discovered that H2O and CO2 absorb infrared confirming the Fourier greenhouse effect. 1896 - Svante Arrhenius proposed human CO2 emissions would prevent earth from entering next ice age (challenged 1906). 1950’s Guy Callendar found H2O and CO2 did not overlap all spectra bands, therefore warming from CO2 expected (countered the 1906 objections against Arrhenius). 1955 - Hans Suess identified the isotopic signature of industrial based CO2 emissions. 1956 - Gilbert Plass calculated adding CO2 would significantly change radiation balance. 1957 - Revelle/Suess suggested oceans would absorb less CO2 causing more global warming than predicted. 1958/60’s - Charles David Keeling proved CO2 was increasing in the atmosphere. 70’s/80’s Suke Manabe and James Hansen began modeling climate projections. Current: NCAR, GISS, Hadley, CRU, RSS TLT, UAH, MSU, Glacier Melt, Sea Level Rise, Latitudinal Shift all confirm models. Short History of Climate Change http://www.ossfoundation.us/projects/environment/global-warming/climate-science-history

4. The Intergovernmental Panel on Climate Change (IPCC) History Established in 1988 by two United Nations Organizations, the World Meteorological Organization and the United Nations Environment Programme to assess “the scientific, technical and socioeconomic information relevant for the understanding of the risk of human-induced climate change.” Led to the United Nations Framework Convention on Climate Change (UNFCCC) Produces Assessment Reports

5. The United Nations Framework Convention on Climate Change (UNFCCC) Treaty established in 1992 to stabilize greenhouse gas concentrations in the atmosphere. Adopted Kyoto Protocol in 1997 – Industrialized countries ("Annex I countries") commit themselves to a reduction of four greenhouse gases (GHG) – Never ratified by US since there are no requirements on underdeveloped nations – Top-ten emitters 1. China: 7,711 million tonnes (MT) or 25.4% 2. US: 5,425 MT or 17.8% 3. India: 1,602 MT or 5.3% 4. Russia: 1,572 MT or 5.2% 5. Japan: 1,098 MT or 3.6% 6. Germany: 766 MT 2.5% 7. Canada: 541 MT or 1.8% 8. South Korea: 528 MT or 1.7% 9. Iran: 527 MT or 1.7% 10. UK: 520 MT or 1.7% http://www.guardian.co.uk/environment/2011/apr/21/countries-responsible-climate-change

6. Latest news on climate change agreements Nov 11, 2014: China and the US agree to cut net greenhouse gas emissions US: achieve 26-28 percent below 2005 levels by 2025 China: Peak emissions by latest 2030; increase the non-fossil fuel share of all energy to around 20 percent by 2030 Jan 25, 2015: India and the US agree to work together to fight global climate change (although no concrete goals): Expand India’s use of solar energy Promote clean energy in India Make progress in India’s reduction of HFC’s (Montreal Protocol) Reduce air pollution in India’s cities Promote nuclear energy in India Criticized by clean coal advocates as being a deal in name only

7. http://www.pmel.noaa.gov/co2/gif/globcar.png GTC: gigatons of carbon

8. Climate Models Accounts for positive feedback – Ice melts due to warming – Ice reflects sunlight – Less ice, les reflection, more warming Account for negative feedback Clouds form due to warming Clouds reflect sunlight, less warming Models’ predictions under different scenarios –Models are extremely complex and must account for scores of factors –Base on AOGCM, Atmosphere-Ocean General Circulation Model –Climate Science is still evolving http://www.epa.gov/climatechange/science/futur etc.html

9. IPCC Special Report on Emissions Scenarios (SRES) Over 40 scenerios – A1F1: High global economic growth and continued heavy reliance on fossil fuels, Close to Business as Usual (BAU) – A2 Used most often Middling scenario, with less even economic growth and some adoption of alternative and renewable energy sources – B1 Assumes a major move away from fossil fuels toward alternative and renewable energy

10. Surveyed scientists agree global warming is real Based on the opinions of 3,146 scientists Vast majority of the Earth scientists surveyed agree that in the past 200-plus years, mean global temperatures have been rising and that human activity is a significant contributing factor in changing mean global temperatures. http://www.cnn.com/2009/WORLD/americas/01/19/eco.globalwarmingsurvey/index.html