GEOS 170A1 Lecture Notes - Lecture 21: Aerosol Spray, Montreal Protocol, Global Warming
11 Apr 2017
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Document Summary
Common misconception that ozone depletion causes global warming. However, both are global-scale issues related to atmospheric composition. Co2 does not deplete the ozone layer. Only loosely connected to global warming and enhance ghe. Such little amount in atmosphere it barely makes any difference. It does not--co2 has nothing to do with ozone. Ozone depletion only happens in atmosphere above antarctica: Most ozone depleting chemicals are produced in northern hemisphere. Uv sunlight breaks apart o2 and unstable o goes looking for other o2"s to join with to create o3. Incoming solar radiation>>visible light comes straight through ozone layer into the troposphere onto earth"s surface>>uv light gets stuck in ozone layer. To have ozone layer must have lot of chlorine and bromine. Uv light is the only thing that can destroy cfcs. Chlorofluorocarbons used in aerosol spray products and refrigeration systems. One cfc molecule can destroy many (100k) ozone molecules in the stratosphere. Seasonal development of ozone hole over south pole-
