PPT-Ecological effects of harmful pollutants in the troposphere

Chemistry 38001 Fall 2014 Chris Sturken Crystal Chen Ellen Lu The Damages of T ropospheric O zone on Plants and its R oles in the Climate Change Loop Roles GW increases . Green . Design Strategies . inspired . by Yuriko Saito. Connie . Svabo. , Associate Professor, Performance Design, CBIT, RUC. Member of Designing Human Technologies. “. While green aesthetics regarding nature can help render seemingly unattractive objects aesthetically appreciable, . B.Sc. 3. rd. Year Chemistry General . Dr. . Santarupa. . Thakurta. Department of Chemistry. Introduction. It is the contamination of air by the discharge of . harmful substances. . Air pollution can cause health problems and it can . The . troposphere. is the lowest layer of Earth's atmosphere. The troposphere starts at Earth's surface and goes up to a height of 7 to 20 km (4 to 12 miles, or 23,000 to 65,000 feet) above sea level. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Almost all weather occurs within this layer. Air is warmest at the bottom of the troposphere near ground level. Higher up it gets colder. Air pressure and the density of the air are also less at high altitudes. Nearly all of the water vapor and dust particles in the atmosphere are in the troposphere. That is why most clouds are found in this lowest layer, too. The troposphere is heated from below. The warm air, heated by the sun, tends to rise. That keeps the air in the troposphere "stirred up". The top of the troposphere is quite cold. Air also gets 'thinner' as you go higher up. . Outdoor Air Pollution. Stationary and Mobile Sources of Air Pollution. Two Sources of Air Pollution. 1. . Stationary Sources:. have a relatively fixed location. Point Sources: . Fugitive Sources: . Area Sources:. ‘. Pollution is. energy . or . matter . released . into . the environment . with. the. potential . to cause . adverse changes . to . an . ecosystem’. They . are usually released by . human activities . Pollution Control to save. the Earth. Environmental Pollution: . Definition – Causes, pollution effects and control measures of Air, Water, Soil, Marine, Noise, Thermal, Nuclear hazards. Solid waste management: causes, effects and control measures of urban and industrial wastes, pollution measures, case studies, Disaster management: floods, earthquake, cyclone and landslides.. The most important among these gases are therefore water vapourand carbon dioxide. The basic principles of the water cycle are well known: Evaporation of liquid water at the surface, condensation, clo Green . Design Strategies . inspired . by Yuriko Saito. Connie . Svabo. , Associate Professor, Performance Design, CBIT, RUC. Member of Designing Human Technologies. “. While green aesthetics regarding nature can help render seemingly unattractive objects aesthetically appreciable, . Marti Blad, Ph.D., P.E. .. Yavapai Apache Nation. 2. What is the Difference?. 3. What we will learn. Pollutants move and spread in air. Up and down (vertical). Away and outward (horizontal). Dispersion vs Diffusion. = gases & particulate material added to the atmosphere. Can affect climate or harm people. Air pollution. = the release of pollutants. Outdoor (ambient) air pollution. = pollution outside. Has recently decreased due to government policy and improved technologies in developed countries. 2. ). 20.95% Oxygen (O. 2. ). 0-4% Water Vapor (H. 2. O). 0.93% Argon (Ar). 0.036% Carbon Dioxide (CO. 2. ). 0.002% Neon (Ne). 0.005%Helium (He). 0.002% Methane (CH. 4. ). 0.00005% Hydrogen (H). 0.00003% Nitrous Oxide (N. Assistant Professor. Department of Civil Engineering. SAL Institute of Technology & Engineering Research. Content . . Definition, Composition of atmospheric air, Classification and sources of air pollutants. Effects of air pollution on human, plant and material, Air pollution control methods, equipment and safety.. There is no place on Earth that isn’t affected by air pollution…. Air pollution. : presence of chemicals in the atmosphere in concentrations high enough to harm organisms, ecosystems, human-made materials or to alter climate. (. Manihot. . esculentum. ),. . DELTA . STATE..  . R. F. . NJOKU-TONY. DEPARTMENT . OF ENVIRONMENTAL TECHNOLOGY. FEDERAL UNIVERSITY OF TECHNOLOGY, OWERRI. CORRESPONDING AUTHOR: Email: tonyrosefeechi@yahoo.com.