EVSC 220 Lecture Notes - Lecture 12: Global Warming Potential, Radon, Longwave

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De ne terminology used to discuss climate change and greenhouse gases. Describe how agriculture contributes to greenhouse gas emissions. Weather: temperature, humidity, wind, precipitation at a given place and time. Climate: 30 year averages, changes in ling term weather patterns. Over the past 63 years, canada winter temperatures have increases on average 2. 5. Long wave radiation emitted from the earth is absorbed and scattered by constitutes in upper atmosphere. Water vapour also a ghg, most important greenhouse gas. More human inputs of ghg increase absorption, increase temperature. Lifetime: general measure that describes how long a gas persists. Turnover rate: ration of mass of constituents in reservoir x and rate of its removal from reservoir x. Radiation forcing: change in average net radon at the time of the troposphere due to each gas. Used to compare the potency of a given unit of gas to cause global warming. Capacity of the gas to absorb radiation.

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