BIO220H1 Lecture Notes - Malnutrition, Alternative Hypothesis, Cherry Blossom
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BIO220H1 Full Course Notes
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Bio220: lecture 22: greenhouse gases and climate change. Earth has seen many changes in climate, accompanied by drastic shifts in biota. Entered 5th major ice age" about 2. 58 mya. Since then, cycling between more and less ice (we"re supposed to be in a cooling phase) The climate of the earth is cycled dynamically over history. An ice age has alternating glaciai and interglacial periods. By reconstructing the isotoype ratios of gaps in frozen lakes, one can reconstruct what the past climate was. The vertical access is temperature (the change from a baseline) and you can see periodic warm bits and periodic cold bits. But the short term prediction is very different, due to human activity. And how these long term natural scuycles interact with human processes that will change short term interactions. Richardson: too k equations to calculate the first numerical weather prediction, so had the idea of how it could work. The technology wasn"t enough to make predictions yet.
