7 Managing the Atmosphere Flashcards

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particulates

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Solid particles and liquid droplets in the air. Generally, these come from any type of burning or dust-generating activities.

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PM10

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Particulate matter of diameter of 10 micrometers or smaller. The particles can be inhaled. the number next to the PM indicates the size of the particulate matter being measured, e.g. PM1 is 1 micrometer in diameter or smaller.

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ground-level ozone

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Froms when NOx and volatile organic compounds (VOCs) react in the presence of sunlight

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acid deposition

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A mix of air pollutants that deposit from the atmosphere acidic wet deposition (with a pH < 5.6) or acidic dry deposition

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primary air pollutant

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An air pollutant emitted directly from the source.

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secondary air pollution

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An air pollutant that forms when pollutants react in the atmosphere.

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smog

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A mixture of smoke and fog; smog intensifies atmospheric pollution

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wet acid deposition

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Atmospheric pollution deposited on Earth ´ s surface as precipitation such as snow, rain, hail, and fog

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dry acid depostion

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Atmospheric pollution deposited on Earth ´ s surface in the absence of moisture, like dust or gases

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photochemical smog

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A mixture of air pollutants and particulates, including ground level ozone, that is formed when oxides of nitrogen and volatile organic compounds (VOCs) react in the presence of sunlight