Atmospheric Chemistry Overview PDF

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StainlessWichita

Uploaded by StainlessWichita

University of Dhaka

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atmospheric chemistry environmental science earth science chemistry

Summary

This document provides an overview of atmospheric chemistry, covering topics such as the structure of the earth, major elements in different sectors (atmosphere, ocean, etc.), and various segments like the lithosphere, hydrosphere, biosphere, and atmosphere. It also includes information on the vertical profile of atmospheric temperatures.

Full Transcript

Atmospheric Chemistry (Met Th 209) Room 603 Sunday 10:00 to 12:00 and Wenesday 10:00 to 11:00 Books:  Introduction to Atmospheric Chemistry By Daniel J. Jacob, Harvard University, Princeton University Press. Atmospheric Chemistry: Fundamentals and Experimental Techni...

Atmospheric Chemistry (Met Th 209) Room 603 Sunday 10:00 to 12:00 and Wenesday 10:00 to 11:00 Books:  Introduction to Atmospheric Chemistry By Daniel J. Jacob, Harvard University, Princeton University Press. Atmospheric Chemistry: Fundamentals and Experimental Techniques by Barbara J. Finlayson- Pitts, Jr. James N. Pitts Atmospheric Chemistry and Physics – From air Pollution to Climate Change - Written by John H. Seinfeld (Cal Tech) and Spyros N. Pandis (Carnegie Mellon Univ) Chapters:  Atmospheric Chemistry Overview  Atmospheric Chemistry of troposphere  Atmosphere Chemistry of the stratophere  Urban Smong  The Global Carbon Cycle  Pollution : Air Quality, Acid rain, and Aerosols  Aerools and Heterogeneous Reactions  Impact of aerosols on weather, climate and human health  The Greenhouse gases effect  Chemistry of the global climate change  Climates of the past Structure of the earth 70% earth surface is covered with water of average depth of 4 km (0- 11km). 30% land (average height 0.84 km (0-8.8 km) is above sea level. Two third of this land is situated in the Northern Hemisphere. Major elements in order of the decreasing concentration in different sectors Atmosphere: N, O Ocean: O, H (Cl, Na, Mg, S) Sedimentary rocks: O, Si, Al, Fe, Ca, K, Mg, C, Na Granitic igneous rock: O, Si, Al, K, Na, Ca, Fe, Mg Baseltic igneous rock: O, Si, Al, Fe, Ca, Mg Mantle: O, Si, Mg, Fe Environmental Segments Lithosphere Hydrosphere Biosphere Atmosphere Lithosphere The mantle of rocks constituting the earth`s crust (outer mantle) is called lithosphere. The soil covering the rocks is considered an important part of the lithosphere. The soil consists of complex mixture of inorganic matters (mixture of silicates of Na, K, Ca and Fe, oxides of Fe, Mn and Ti, and carbonates of Ca and Mg), organic matter(not more than 5% of soil: biologically active components, polysaccharides nucletides, organo-phosphorus, organ- sulfur compounds, sugar and humic materials, clay minerals) and water. Hydrosphere All the surface and ground water resources (e.g., oceans, seas, rivers, steams, lakes, reservoirs, glaciers, polar ice caps, ground water and the water locked in rock-crevices and minerals lying deep below the earth crust). 70-80% of earth surface is covered by water- 97% of that are from oceans and seas, 2.4% are glaciers and polar ice caps, and the rest (

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