9.1 & 9.2 - Ozone Depletion Overview

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Stratospheric Ozone

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12 Terms

1

Stratospheric Ozone

Protective layer in the stratosphere

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2

Good Ozone

Ozone in the stratosphere protecting from UV-C

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3

Bad Ozone

Ground-level pollutant from sunlight reacting with SO2 and NOx

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4

Ozone Formation

Formation of O3 from O2 and UV radiation

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5

CFCs

Chlorofluorocarbons found in refrigerants, propellants, etc.

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6

CFCs Breakdown

Cl in CFCs acts as a catalyst, breaking down ozone molecules

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7

Ozone Hole

Serious thinning of the ozone layer over Antarctica

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8

Ozone Loss Cycle

Greatest in S. Hemisphere's winter due to ice crystal formation

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9

Ozone Recovery Cycle

Greatest in S. Hemisphere's summer when ice crystals melt

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10

Montreal Protocol

International agreement limiting/banning CFCs in 197 countries

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11

HFCs

Hydrofluorocarbons, potent greenhouse gases replacing CFCs

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12

HFCs Impact

HFCs are potent greenhouse gases needing substitutes

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