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Transcript of 7274 English 1
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Computing and Information system
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Computing and Information system
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IntroductionAcid depositionProblemsIndoor air pollutionHealth problemGlobal wormingsolutions
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Industrial smog from burning coal
Photochemical smog from motor vehicleindustrial emissions
Acid deposition from coal burning and motor vehicle exhaust.
Computing and Information system
WhatWhat Are the Major Air PollutionAre the Major Air PollutionProblems?Problems?
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Types of Major Air PollutantsTypes of Major Air Pollutants
Carbon oxides (CO)N itrogen oxides and nitric acid (NO, HNO3)S ulfur dioxide and sulfuric acid (SO2,H2SO4)Particulates (SPM )Volatile organic compounds (VOCs)R adioactive radon (Rn)
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S ources and Types of Air Pollutants
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Acid Deposition
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Current and Potential Problems withAcid Deposition
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Computing and Information system
Important Indoor Air Pollutants
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Human Respiratory SystemHumanRespiratory System
Computing and Information system
Human R espiratory S ystem
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Computing and Information system
Healthy and Diseased Lungs
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H ow Might the Earth s Temperatureand Climate Change in the Future?
Evidence indicates that the earth satmosphere is warming, mostly because of human activities.
It will lead to significant climatechange during this century.
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N atural greenhouse gasesWater vapor (H 2O)Carbon dioxide (CO 2)Methane (CH 4)N itrous Oxide ( N 2O)
Enhanced greenhouse, effect Globalwarming
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1. 13 warmest years on record since1990
2. Arctic temperatures have risentwice as fast
3. Changes in glaciers, rainfall patterns, hurricanes
4. Sea level rise in this century 4 8inches
5. Drought 6. Decreased food production7. Threat to biodiversity 8. Threats to human health
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Computing and Information system
Melting of Alaska s Muir Glacier
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S olutionG overnments can tax greenhouse gas
emissions, subsidize energy efficiency
and renewable energy use, and cooperate internationally, and individuals and institutions can sharply reduce their greenhouse gas emissions.
We can slow the rate of climatechange by increasing energy efficiency,relying more on renewable energy resources, and reducing greenhouse gasemissions.
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CO2 is pumpeddown from rig fordisposal in deepocean or underseafloor sediments
Deep, saltwater-filled cavern
Spent coalbed cavern
CO2 is pumpedunderground
S pent oil or
natural gasreservoir
Crop fieldSwitchgrass
Abandoned
oil field
Tree plantationCoal powerplant
Tanker delivers
CO2 from plantto rigOil rig
Computing and Information system
R emoving Carbon Dioxide from the Atmosphere
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Computing and Information system
Preparing for Climate Changes
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Computing and Information system