GPHY 314 Study Guide - Quiz Guide: Permutation, Spectral Density, Coral Reef
31 Oct 2017
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Quiz 3 orbital-scale climate: 3 myrs ago, 10 degrees, 1. What are the changes occurring in the orbital time scale? (these 3 main components drive orbital clime change) 3myrs 800kyrs via marine sediments: 4. For which effects on the climate system? the last 800kyrs via ice cores. Monsoons, polar ice sheets, ghgs concentrations: earth is elliptical (oval) not round. Paleoclimate records: spectral analysis = how often and how strongly do you find the cycle occurring through time power spectrum (and wavelet transform, 4 cycles required. Control of monsoons: driven by land and vs. oceans differences in response rates to insolation (heat capacity) land response bigger than ocean response, summer low pressure cells over west-central north africa. Moisture transported from tropical atlantic: winter weaker solar radiation + dry trade winds rare and weaker rain on sea & ocean (high pressure cell, orbital monsoon hypothesis.
