GEO 605 Lecture Notes - Lecture 2: Arctic Air, Jet Stream, Background Radiation
4 Mar 2017
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Why is it so cold in the arctic: above the tree line in the north of canada. The further north you go, the sun stays much longer. As we get into summer, our days get longer because we are further north on the map. In the north, 2 months of the year (july and august), the temperature is above 0. In toronto 2 months are below freezing (0 deg c: very little precipitation. Absorption of terrestrial radiation: we know that co2 is increasing. Its trapping more heat: data analysis in terms of past climates, they attack the math and methods, co2 is increasing because we are burning fossil fuels. Human activities have changed the composition of the atmpsphere: all because of industrial revolution, more farms etc. The ea(cid:396)th"s g(cid:396)ee(cid:374)house effe(cid:272)t car: 14% escapes in outer space, water is excellent absorber of thermal radiation, holds that energy much longer, terrestrial radiation comes to earth and goes back, basic science.
