GEOG 2110 Chapter all: geog2110 finals study notes
Document Summary
Graph for early farming and climate will be on exam. Quelccaya warmer now then during last medieval warming. Climate cooled from 6 kyr bp to the 1800s. Causes if prelindustrial climate changes: orbital forcing. Caused about half of observed cooling from 8 kyr bp. Could have contributed to anomalous warming during mwp (medieval warming period) Volcanic missions of sulfate aerosols above the tropopause exert strong cooling effect. Exam question: icelandic volcanic eruption: green house gases. No-analog question: climate changes that occurred midway through the deglaciation produced unusual mixtures of plants such as these. Dansgaard-oeshger oscillations: a sawtoothed shaped oscillation, of fast warming and slow cooling. Sediment drifts: bottom currents carry fine sediments away from locations subjected to swift flow and deposit them as large lens shaped piles. Heinrich events: episodes of unusually abundant ice rafting separated by as little as 7000 years to as much as 12000 years.
