GEG 1301 Study Guide - Air Mass, Laurentide Ice Sheet, Microthermal
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GEG 1301 Full Course Notes
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Geg 1301 climate classification and regionalization chapter 10. Empirical classification: based on grouping areas with similar statistical climate data. Genetic classification: based on knowledge of causative factor for example, the interaction of air masses is a genetic classification of climate. Classified based on temperature, precipitation and evapotranspiration: tropical, desert, mesothermal, microthermal, polar, highland. Trees rings: tree ring width and density can tease out temperature and precipitation, tree ring overlapping chronologies. Volcanic and shard markers: time horizons, as records of volcanism. First major northern hemisphere glaciations began during the pleistocene. During glacial, ice covered up to 34% of the globe. Laurentide ice sheet covered most of canada, 4. 5 km thick. Amount of energy reaching earth due to variation in earth-sun geometry. About a 5% variation in energy received, especially at high latitudes. Tilt: greater tilt gives greater seasonality in both hemispheres. Eccentricity (stretch: more seasonality in on hemisphere and less in the other when eccentricity is high.
