GEOG 1350 Lecture Notes - Lecture 11: Carbon Cycle, Hadley Cell, Phanerozoic
16 Aug 2016
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Diagrams to think about: hadley cell, atmospheric lifting (front formation, orographic precipitation) Cycles and positive or negative feedbacks that link to long changes. Right now, technically in an ice house period, actually warm climate though. 50,000 years signified magnitude decreasing, even smaller in last 1000 years, most rapidly. Resolution of climate history, small scale does not show as much variability. Any time it got very cold, the concentration of co2 in atmosphere was lower at 190 parts per million. Remember that last interglacial was about 150, 000 years ago, concentration of co2 was about 280. Preindustrial concentration (1600"s) concentration was about 280 of co2. Today is just under 400 parts per million. Managed to increase by 120 parts per million, since 1800"s. Cambrian (500 million years ago) temp difference is about 10x30+, range in co2 between 2400- Record of change from antarctica ice cores. Likely feedbacks are happening within the climate system. Look at the pattern of temperatures and co2.
