Air Pollution & Global Warming PDF

GLOBAL WARMING ● It is a phenomenon occurring in the troposphere layer. ● Normally atmospheric gases allow light and warmth to reach the earth but they do not allow warmth to be lost. ● With increasing air pollution the gases like CO2, methane, CFC and accumulation of ozone, all in the troposph...

GLOBAL WARMING ● It is a phenomenon occurring in the troposphere layer. ● Normally atmospheric gases allow light and warmth to reach the earth but they do not allow warmth to be lost. ● With increasing air pollution the gases like CO2, methane, CFC and accumulation of ozone, all in the troposphere elevate the global temperature beyond the desirable level resulting in global warming. Effects of Global Warming ● Increased in dryness of Climate ● Melting of polar Ice caps ● Increase in sea levels resulting in floods ● Smog formation ● Increase incidence of Skin Cancer and cataract Factors Affecting Air Pollution ● Local climate (inversions, air pressure, temperature, humidity) ● Topography (hills and mountains) ● Population density ● Amount of industry ● Fuels used by population and industry for heating, manufacturing, transportation, power ● Weather: rain, snow, wind ● Buildings (slow wind speed) Monitoring Of Air Pollution The best indicators of air pollution are 1.Sulphur dioxide Index 2.Smoke Index 3.Suspended particles 4.Coefficient of haze 5.Air pollution index Strategies to control ● Broadly 3 measures: 1. Engineering technology 2. Legislation 3. General measures Engineering technology ● ● Industries must be located far away from human habitations Replacement measures: For e.g using of electricity instead of fuels, using LPG in place of coal. Containment measures: • ● • • • Controlling dust production by wet method Enclosure hood, exhaust pipes for removal Increasing height of smoke vents Legislation Measures • Saudi Green Initiative • Middle east green initiative • • General Authority for metreological and Environmental Protection Basic Law of Governance Policies and Investments ● ● ● ● Support sustainable land use. Cleaner household energy and transport. Energy-efficient housing, power generation, industry. Better municipal waste management can effectively reduce key sources of ambient air pollution. General measures ● ● ● ● ● ● Control of traffic Maintenance of vehicles Use of unleaded petrol Use of CNG in vehicles Establishment of ‘Green Belts’ Health education of people about hazard of air pollution References ● Saudi Arabia Air Quality Index (AQI) and Air Pollution information | IQAir ● WHO global air quality guidelines: particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide Textbook of preventive and social medicine. KA Park,26th edition. Bhanot Publisher, Jabalpur, India 2022. • ● Maxcy-Rosenau-Last Public Health & Preventive Medicine. Edited by Wallace R. McGraw Hill Professional Publishers. 15th Edition. ISBN-10: 0071441980 THAN K YOU