PPT-ALL ABOUT OZONE TROPOSPHERE

A layer of the atmosphere that is closest to the Earths surface Almost all weather occurs here Temperature decreases as altitude increases STRATOSPHERE Layer above the troposphere Extends from 1850 km. 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 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.. The . ozone layer. is a layer in . Earth's atmosphere. which contains relatively high concentrations of . ozone. (O. 3. ). . This layer absorbs 97–99% of the . Sun. 's high frequency . ultraviolet light. Lesson Objectives. Describe how the temperature of the atmosphere changes with altitude.. Outline the properties of the troposphere.. Explain the role of the ozone layer in the stratosphere.. Describe conditions in the mesosphere.. the Upper Troposphere - Lower Stratosphere. K. . Wargan, . S. . Pawson. , . M. . Olsen, . J. . Witte, . A. . Douglass. Global Modeling and Assimilation Office (GMAO). Chemistry and Dynamics Branch. NASA GSFC. 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. 9. Next topic: Photochemistry (. Ch. 3 notes). Can these energies break chemical bonds?. weak O. 2. -O bond in ozone (~ 100 kJ/. mol. ). moderately strong C-H bond in formaldehyde (~368 kJ/. mol. ). What is a greenhouse?. Wikipedia | GNU . Greenhouse Effect. Process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. 1. AOSC . 637. Tropospheric . Ozone. Ozone is a major pollutant. It does billions of dollars worth of damage to agricultural crops each year and is the principal culprit in photochemical smog. Ozone, however, exists throughout the troposphere and, as a major OH source and a greenhouse gas, plays a central role in many biogeochemical cycles. That photochemical processes produce and destroy . 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. 2. observations and the role of the upper troposphere. Rachel Silvern. Atmospheric Chemistry Modeling Group, Harvard University. TEMPO Science Team Meeting. June 7, 2018. Previous work showed 60% reduction of . 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.. Retrievals . from . Joint UV and Visible . Measurements by the . TEMPO. Juseon Bak, Xiong Liu, Chris Miller, Kelly Chance. ,. John Houck, Ewan O’Sullivan, Caroline R. . Nowlan. , G. Gonzalez . Abad @ . 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).