Topic_22___Human_Effects_Atmos

Topic_22___Human_Effects_Atmos - Study Questions Topic 22...

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Study Questions Topic 22: Human Impacts on the Atmosphere Lecture Outline I. Atmospheric change and sensitivity II. Primary Pollutants III. Acid Rain (secondary pollutants) IV. Smog (secondary pollutants) V. Urban pollution (secondary pollutants) VI. Tropospheric Ozone (secondary pollutants) VII. Stratospheric Ozone (secondary pollutants) VIII. Greenhouse Gases I. Atmospheric change and sensitivity A. Consider rates and spatial scales of natural atmospheric change, from history of atmosphere lecture, in context of impacts by human activities B. Types of Pollutants A. Primary Pollutants: Harmful chemicals or gasses B. Secondary Pollutants: React with components in the air to form new pollutants
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II. Primary Pollutants and Their Sources A. Carbon monoxide (CO) 1. Bind to hemoglobin molecules 2. Automobile emissions account for 56% of all CO B. NOx: Nitrogen gas (N 2 ) is oxidized (+ O 2 ) at high temps in engine exhaust, smoke stacks to form NO, NO 2 , N 2 O 4 C. SO X : Sulfur in fossil fuels is oxidized, becomes SO 2 D. VOCs include methane (CH 4 ), alcohols, ethers, auto fuel 1. They are produced naturally (e.g., forest fires) and by human activity 2. Combustion of oil and gas are the biggest source E. Particulates III. Acid rain A. What is it? The deposition of acids from the atmosphere onto the
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Topic_22___Human_Effects_Atmos - Study Questions Topic 22...

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