Geology 1350 Lecture 20 Outline of Last Lecture I. Climate changeOutline of Current Lecture I. Air PollutionCurrent LecturePollution began in the industrial revolutionAir pollution types, sources, and trends, including tropospheric and stratosphericMeteorologic and topographic effect on air pollution s well as pollution in the urban environmentsTypes and sources- primary and secondary- primary (carbon monoxide, what you put in gas) enter the atmosphere right away while secondary pollutants formed by chemical reaction, Pollutant sources are both natural, such as volcanoes and forest fires and human caused such as cars and industryPrincipal air pollutants- carbon mono, sulfur oxides, nitrogen oxides, volatile organic compounds, and particulate matter are the most prevalent primary pollutants and transportation and power generation are the primary sources for theses pollutantsParticulate matter pollution- particulate are classified as hiving diameters<10 and >2.5, pm10 pollutants settle out the atmosphere relatively quickly compared with the lingering pm 2.5, both can adversely affect human health and reduce visibility, Visible and invisible pollutants- suspended by hygroscopic particles may scatter Typical diurnal variations- peak in the morning and down in the afternoonOzone is formed in the troposphere when NO is oxidized to no2 by any species but not ozoneThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Trends in urban ozone- yearly ozone trends are influenced by hot sunny weather and light surface winds, but many cities have demonstrated an overall decline in harmful ozone levels during the 1980s (except
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