A&O SCI 1 Lecture Notes - Lecture 1: Carbon Cycle, Ozone Depletion, Cambrian Explosion
19 Aug 2016
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Document Summary
8 - media is a problem in climate change. Pollution that happens in one place, can affect anywhere else in the world. Climate mean/average weather during a particular period and to the deviations from that average. Weather the state of earth"s atmosphere at a given instant in time. Ice in the arctic has decreased over time. Vegetation has been increasing in northern most regions over the last 20 years. Deforestation occurs at rate of 150,000 square km per year worldwide. When emailing him put a&o sci 1 in the subject line. Course themes: present climate, variability of present climate, past climate, climate predictions, climate impacts on society. Ice ages period of glaciation in the last 2 million years where ice sheets grew and decayed intermittently in the northern hemisphere. Ozone (o3) is essential to life on earth: o3 has been decreasing worldwide. Over antarctica, it has come down to less than one-half since the 1980"s.
