PPT-Air pollution, climate change, and ozone depletion

what is the nature of the atmosphere We live at the bottom of a thin layer of gases surrounding the earth called the atmosphere which is divided into smaller spherical layers In the troposphere the layer closest to earth about 7580 of the earths air mass is found here. 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?. ORGANIC AIR POLLUTANTS. Acrylonitrile. Benzene. Butadiene. Carbon disulfide. Carbon monoxide. 1,2-Dichloroethane. Dichloromethane. Formaldehyde. Polycycli aromatic hydrocarbons (PAHs). Polychlorinated biphenyls (PCBs). 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. Climate Health Action Teams (CHAT). 2015 Webinar Series . May 20, 2015. CLIMATE HEALTH ACTION TEAM (CHAT) ACTIONS REPORT. CHAT and PSR members sent over 1,900 letters to EPA Administrator Gina McCarthy, urging EPA to . 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. Laura Marschke. Southwest Early College. Pollution. What are we learning about today?. What is pollution?. Air pollutants. Where does air pollution come from?. Why do we care about pollution?. Health effects. Green Budget Europe Event. Dr. Aonghus McNabola. School of Engineering. Trinity College Dublin. 15. th. Sept 2016. Diesel Emissions, Air Pollution & Climate Change. What do we mean by ‘air pollution’ ?. Topics. :. 1) Major Air Pollutants. 2) Smog & Acid Deposition. Our Atmosphere . IS. a Resource. Atmospheric Composition. N. 2. . 78.08%. O. 2. . 20.95%. Argon 0.93%. Carbon dioxide 0.04. % (400 . professor . Dr.HUDA. FAROOQ ZAKI. INTRODUCTION TO ENVIRONMENTAL POLLUTION. Pollution : is the addition to the ecosystem of something which has a detrimental effect on it .. Pollution : is the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects. . Lecture . Five: Air . Pollution. Department of Environmental Engineering. OUTLINE. Atmosphere as a Resource. Types and Sources of Air Pollution. Major Classes of Air Pollutants. Urban . Air Pollution. 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. 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. 3 . formed by .