PPT-1 Ozone

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 ODCs . 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.. 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 . Air Quality Division . Mark . Estes. a. , Shaena . Berlin. b. , Andrew . Langford. c. , Melody . Dong. d. , Jim . Smith. a. , Fernando . Mercado. a. , David . Parrish. c. Presented to AQAST Meeting, Rice University. Tuesday, January 5. th. , 2015. Good up high, bad nearby. Troposphere:. Thinnest layer of atmosphere, 80% mass, almost all H. 2. O. 0.04 ppm O. 3. Stratosphere: 10 ppm O. 3. Characteristics of O. 3. Highly poisonous, strong odor, irritant, colorless gas. P. . J. Young. , V. . Naik. , J. . Brandt, R. Doherty, A. M. Fiore, . A . Gaudel. , C. . . Geels. , M. I. . Hegglin. , L. Hu, U. . Im. , R. Kumar, M. Lin, A. . Luhar. , L. Murray, . J. . Neu. , D. . . EVSC 1300. Spring 2016. Average. vertical. temperature. structure. of atmosphere. Average. vertical. temperature. structure. of atmosphere. NO. x. + VOCs + sunlight .  . Ground-level ozone. Figure18-9 p528. 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. 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. Updates from . PSU/GSFC/UMD. : Comparisons with . Observations. Anne Thompson, NASA-GSFC. 5 Jan 2015. Nikolay . Balashov (PhD Candidate) . & Greg Garner (Prof G. Young). All at PSU. Background & Principles of PSU/GSFC/UMD AQ Forecasting with Value of Information. Ja. -Ho Koo. EAS 6792 Term project. Introduction. Tropospheric. ozone depletion event (ODE) usually happens in spring,. . polar. . region.. ODE looks strongly related to the amount of atmospheric bromine chemistry based on the heterogeneous reaction (Barrie et al., 1988). YAG Laser and Raman Cells (. A53Q – 0439. ) . J. T. . Sullivan (jsull1@umbc.edu). 1,2. , . T. J. . McGee. 2. , . G. K. . Sumnicht. 2,3. 1. . Department of Atmospheric Physics, University of Maryland Baltimore County (UMBC), Baltimore, MD, United States. . The . ozone layer or ozone shield . is a region of Earth's stratosphere that absorbs most of the Sun's UV radiation. . It contains high concentration of ozone (O3).. It is a pale blue gas at room temperature.. found?. The . ozone layer . is the layer of the atmosphere at an altitude of 15 to 40 km (stratosphere) . What is Ozone?. Ozone. . is a molecule made of three oxygen atoms. What is the function of the ozone layer. 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).