GEOG 2050 : Exam 4 GEOG
Document Summary
Climate variability: climatologists have recognized patterns that reoccur with time, these patterns help predict future conditions and weather forecasting, anomaly, departure from average conditions. Walker circulations: east to west, trade winds bring moist surface air to the west, moist air rises and becomes drier as it feeds rain, dry air returns to the east, and sinks as it cools. Definitions: thermocline- the water depth where temperature changes from warm to cold, upwelling, water from depth that moves to the surface, colder, nutrients from deep water decomposition upwell to support fisheries. Global warming the annual average temperature of the earth (spatial average) from 1880 to present contains a . 8 degrees c warming trend. Medieval climatic optimum ~ ad 950 to 1250: europe, grapes in england, good harvest, plenty of food, glaciers retreated, winters less severe, less famine, less disease, aka little climatic optimum, medieval warm period, or medieval warm epoch.
