PPT-1 May 14, 2014 Uncertainties in projections of ozone-depleting substances and alternatives

Guus Velders The Netherlands RIVM Guus Velders 2 Focus on OzoneDepleting Substances Projections of gases controlled by the Montreal Protocol CFCs halons HCFCs carbon tetrachloride methyl chloroform CH. 20 to 22 26 to 30 26 to 29 23 to 25 20 to 23 18 to 23 21 to 32 21 to 30 20 to 26 18 to 26 June projection 21 to 23 30 to 32 25 to 30 na 21 to 23 19 to 24 22 to 36 22 to 32 na 18 to 25 Unemployment rate 59 to 60 54 to 56 51 to 54 49 to 53 52 to 55 5 28 to 30 30 to 32 25 to 30 22 to 23 21 to 30 22 to 35 22 to 34 18 to 24 December projection 28 to 32 30 to 34 25 to 32 22 to 24 22 to 33 22 to 36 21 to 35 18 to 25 Unemployment rate 61 to 63 56 to 59 52 to 56 52 to 56 60 to 65 54 to 59 51 to 58 52 23 to 24 26 to 30 25 to 30 23 to 25 20 to 23 23 to 25 21 to 32 21 to 30 20 to 27 18 to 27 September projection 20 to 22 26 to 30 26 to 29 23 to 25 20 to 23 18 to 23 21 to 32 21 to 30 20 to 26 18 to 26 Unemployment rate 58 52 to 53 50 to 52 49 to 5 1 Background 12 Guideline Purpose 13 Definitions 2 Roles and Responsibilities 21 Department of Environment and Natural Resources Environmental Protection Division 22 Other Regulatory Agencies 23 Owners 24 Service Technicians 25 Vendors of ODSs and Ha DEPLETION. What is Ozone?. Two different layers in the atmosphere:. . Troposphere. Stratosphere. . What is ozone layer?. Ozone layer is a thin, fragile shield that contains relatively high concentrations of ozone.. Layer. Depletion. “. Life’s Support System Depletion. ”. Outline of Presentation. What is the Ozone layer?. How is ozone created and destroyed?. What is the Ozone hole?. What are the causes of Ozone Depletion?. Climate Action . Reserve Workshop. September 2011. Global Warming Potential of ODS . [GWP]. CO. 2. 1 . GWP. CFC-11. 4,750 . GWP. CFC-12. 10,900 . GWP. FOAM. BLOWING . AGENT. Refrigerators. Buildings. Atmospheric measurements of Ozone Depleting Substances (ODSs) at ESRL Kasai, National . Institute of Information and Communications Technology (NICT. )/ Tokyo Institute of Technology/The ministry of internal affairs and Communications. Setsuko Aoki, Keio University, . AND CURRENT STATUS. GLY 4241 - Lecture 8 . Fall, 2016. Mount Pinatubo Eruption, 1991. 2. 3. 1997 Montserrat Eruption. 4. Sulfur Dioxide Conversion. 5. Aerosol Optical Depth Analyses. BRW is Pt. Barrow, Alaska. 2. Ozone – Two Faces. Troposphere – Bad Ozone. Pollution . Photochemical smog. . Eye irritant. Stratosphere – Good Ozone. Blocks some UV radiation. Hole caused by depletion due. to ODC’s . Lauren Gooch, . William T. Sturges. *. , Johannes . Laube. and David . Oram. , UEA. , UK. Jia. -Lin . Wang, . Cheng-. Feng. . Ou. -Yang . and . Neng-Huei. . Lin, . National Central University, . Taiwan. Nitrous . Oxide (N. 2. O). : The Dominant Ozone-Depleting Substance Emitted in the 21. st. . Century, A. . R. . Ravishankara, John S. Daniel, and Robert W. . Portmann, . SCIENCE. , . Vol. . 326, Pages: 123-125, 2009 (OCT 2. N. 2. O . under the. Vienna Convention for the Protection of the Ozone Layer and/or . Montreal Protocol on Substances that Deplete the Ozone Layer. Peter M. Grabiel. Institute for Governance & Sustainable Development (IGSD).