CU-Boulder ATOC 1060 - ATOC CH 1-5 (6 pages)

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ATOC CH 1-5



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ATOC CH 1-5

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University of Colorado at Boulder
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Atoc 1060 - Our Changing Environment: El Nino, Ozone, and Climate
Our Changing Environment: El Nino, Ozone, and Climate Documents

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CHAPTER ONE Global climate the prevailing weather patterns of a planet region over time Green house gases are gases that warm a planet s surface by absorbing outgoing infrared radiation radiant heat and reradiating some of it back towards the surface natural process that keeps the surface warmer then it would be in the absence of an atmosphere Global Warming increase in Earth s temperature brought about by a combination of industrial and agricultural activities Ozone layer is a chemically distinct region within the stratosphere protects Earth from UV rays Interglacial period a warm interval marked by the retreat of the Northern Hemisphere s ice sheets System is a group of components that interact Earth System hydrosphere biota atmosphere solid Earth Atmosphere thin envelope of gases that surround Earth Hydrosphere composed of various reservoirs of water including ice cryosphere Biota all living organisms Forcing external influence Keeling Curve Manua Loa was chosen as the measurement sight because the air blowing over it s summit is removed from pollution Concentration of atmospheric gas measured in part per million ppm Seasonal oscillation have to do with breathing of Northern Hemisphere s forests CO2 levels on the rise since 1958 Surface temperature does not increase as uniformly or at the same rate as atmospheric CO2 CO2 is cumulative SO2 is not Thermal Expansion gradual warming of the ocean water expands when heated Stratosphere extends between 10 50km of altitude where most of Earth s ozone is located absorbs UV Ozone hole over Antarctica believed to be caused by breaking down of CFCs and chlorine monoxide ClO K T Boundary stands for the transition between two time intervals the Cretaceous and the Tertiary dinosaurs disappeared around this time Sun produces its energy through nuclear fusion joining of two or more light atomic nuclei to form one heavier nucleus The sun s luminosity should gradually increase as it depletes its hydrogen fuel Faint young sun



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