PPT-Nitrous Oxide (N 2 O ) and Stratospheric Ozone Layer Depletion

Nitrous Oxide N 2 O The Dominant OzoneDepleting Substance Emitted in the 21 st Century A R Ravishankara John S Daniel and Robert W Portmann SCIENCE Vol 326 Pages 123125 2009 OCT 2. Stratospheric ozone: the natural cycle Produced in stratosphere by dissociation of oxygen atoms exposed to short-wave radiation Reaction accounts for most of adsorption of ultraviolet sunlight () as w Ozone Depletion. Quick recap…. ". The ozone layer. " refers to the ozone within stratosphere. over 90% of the earth's ozone resides. Ozone is an irritating, corrosive, colourless gas with a smell. O. 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?. and verification of the connections between ozone depleting substances and the ozone hole. A.R. (Ravi) Ravishankara. NOAA, ESRL/Chemical Sciences Division. Boulder CO, USA. Co-Chair, SAP. Some . personal . Presenter:. Benjamin Lynch, ND. International . Academy of Biological . Dentistry . and Medicine Conference . Las Vegas, NV. “. Clinicians will be central to helping consumer-patients use genomic information to make health decisions. maurineclark@msn.com. www.ouchlesshealthcare.org. April 21, 2012. Society of Pediatric . Nurses . 22. nd. Annual Convention. Houston, Texas. The Ouchless Hospital. Developing a Nurse Administered Nitrous Oxide Program. Foreman Room 102. 1. Global Warming and Ozone Depletion take place in two different layers of the atmosphere: . Global Warming. Ozone . Depletion. Global Warming vs. Ozone Depletion: Causes. Global Warming: cars, factories, rice farming, landfills: . Ozone produced from the interaction of hydrocarbons and oxides in the presence of sunlight. At ground level, ozone is a pollutant; in the upper atmosphere it protects earth from excess radiation from sun. Ozone Depletion(Chapter 25). Ozone Properties. Ozone (O. 3. ). is a triatomic form of oxygen found mostly in the lower half of the atmosphere. Highly reactive strong oxidant. Tropospheric pollutant produced by photochemical reactions. First, what is the ozone problem? . About 2 billion years ago Life on Earth was entirely single-celled organisms living in the oceans when one type of bacteria (. Cyano. ) began emitting Oxygen to the atmosphere. . GLY 4241 - Lecture 6 . Fall, . 2016. 2. Earth. Even in a high resolution image from space, the atmosphere is not visible. 3. Radiation. NASA graphic. 4. Chinese Smog. Haze over China. Increased desertification has added dust to China’s atmosphere. to Nitrous. . Oxide. Presented by the . ECU . Office . of . Environmental Health and. . Safety. Uses . of Nitrous. . Oxide. Anesthetic . agent . in . medical, dental,. . and . veterinary. . operatories. 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).