ES102 Lecture Notes - Lecture 4: Milankovitch Cycles, Medieval Warm Period, History Of Greenland
23 Jan 2018
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Document Summary
Part one - modification of stratospheric ozone layer (science of climate change) Part two - changes to climate systems in the tropospheric caused by elevated greenhouse gas concentrations. Climate science, anthropogenic sources of greenhouse gases. Precipitation from may to august data from medicine hat, alberta. Medieval warm period - led to norse colonizing greenland & mayan society collapses. Little ice age (lasting until 1880) - led to greenland norse society collapse & allowing the dutch to sakte. Due to less sunspots - the less sunspots, colder weather. 2014 was the hottest year on record. November 2015 was the hottest november ever. Atmospheric co2 concentrations, over the past 400, 000+ years. First science to think about earth"s energy balance - believed in long and short wave radiation but had no way to prove his theory. Believed that there are trace gases in atmosphere and their effect on surface temperatures. Able to prove this theory with primitive technology.
