GGR100H1 Lecture Notes - Milky Way, Shortwave Radiation, Solar Wind
Document Summary
Why it"s important: solar radiation drives physical systems and the biosphere abbreviations used in document: sorad" = solar radiation; bill. " = billion"; amnt" = Earth-sun relationships are critical to how earth systems behave. Revolution and rotation = 2 very distinct characteristic of earth. >revolution: earth orbits annually around sun in an ellipse (1 complete revolution/year) >rotation: earth rotates eastwards daily on own axis, which gives day and night aphelion and perihelion: related to certain distances of earth from sun at diff. times aphelion. = july 4th/summer: earth at its farthest from sun at this point in revolution perihelion. = january 3rd/winter: earth at its closest to sun at this point in revolution. >aphelion and perihelion raise questions against misconceptions about proximity to. Sun equitable with seasonality, since further we are, it"s summer, whereas closer we are, it"s winter. Typical of one of several 100 bill. stars in milky way galaxy.
