ATM S 111 Lecture Notes - Lecture 3: Radiative Forcing, Shortwave Radio, Land Cover
10 Oct 2016
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Document Summary
Climate forcing"s: things that change global temperature directly. Climate feedbacks: things that respond to temperature changes (but themselves affect temperature too). Forcing"s are important for the climate (examples greenhouse gases, vol(cid:272)anoes, air pollution . Example of climate forcing"s: volcanoes blocking sun, greenhouse gases increased. Climate feedbacks are things that change in response to a climate change. For example, ice/snow (ice melts when it gets hotter), clouds, water vapour. Radiative forcing: is calculated as the change in shortwave in radiation or longwave out radiation due to the particular climate forcing. An increase in shortwave is positive radiative forcing or a decrease in longwave out it is also positive radiative forcing, this will cause the earth to warm. For shortwave forcing, this is just the change in the solar energy absorbed. For longwave forcing"s: instantly change the gas concentration with a reference concentration.
