GG231 Chapter Notes - Chapter 12: Arctic Ocean, Atmospheric Circulation, Ice Shelf
Document Summary
Harmful to some northern animals: calving of canadian, greenland and antarctic ice shelves, local warming in canadian arctic will exceed 3c during this century. If entire ice were to melt, global sea level would rise by 7m. Climate and weather: climate atmospheric characteristics of a region over years or decades, weather atmospheric conditions of a region for shorter periods (days or weeks, climate is more than averages of temperature and precipitation. Two locales may have similar temperatures but different climates. Climate has warmed over most of the earth during the past century. Magnitude differed considerably from place to place: some areas more wet, some more dry. Comprises of nitrogen, oxygen and smaller amounts of other gases. Permanent gases: concentrations do not change. Variable gases: proportions of which vary in time and space. Constitutes about 99% of all atmospheric gases: nitrogen, oxygen and argon.
