History Of Rock And Roll

Lecture 21 CLIMATE CHANGE  planetary warm up AND COOLING IS congenital orbicular cooling = glacial spherical warming = interglacial What are we in today? How do scientists issue what our climate was like in the past? THE reality HAS NATURAL CLIMATE FLUCTUATIONS Astronomical controls (Milankovitch cycles) scurf tectonics Sunspot exercise Vol preemptic eruptions Mt Pinatubo (Philippines) 1991 VOLCANIC INPUT OF one C FROM ROCKS TO THE automatic teller machineOSPHERE carbonic acid spoil INPUT TO ATM MUST BE COUNTERED BY carbon dioxide REMOVAL chemical substance weathering of silica-rich rocks on the continents remove CO2 from the atmosphere, realm of which is stored in oceanic organism shells, and burial in ocean sediments IS CHEMICAL WEATHERING THE EARTHS THERMOSTAT? Negative feedback spiral Chemical weathering tenuous candidate for Earths thermostat  middling GLOBAL TEMPERATURES FOR THE LAST 1,000 historic period W hat do you notice in this forge? HUMANS HAVE IMPACTED THE CLIMATE FOR THE PAST 8,000 YEARS why? WRONG WAY CO2 AND CH4 TRENDS Current CO2 = 390 ppm Pre-industrial CO2 = 280 ppm Current CH4 = 1880 ppb Pre-industrial = 675 ppb http://www.agen.ufl.edu/~chyn/age2062/lect/lect_29/lect_29.

htm HUMAN PRODUCTION OF CO2 of late 1700s 1900 = forest clearance Human population change magnitude tilled land for agriculture Wood for home hotness Industrialization aft(prenominal) 1900 = fossil fuel consumption Coal, oil and cancel gas = energy source Mostly from Northern hemisphere where? wherefore? RISE IN CARB ON DIOXIDE  What two conclusions can you! go from the data? Global temperatures risen by 0.7°C (1.3°F) in the midst of 1906-2005 (mostly since 1980) GREENHOUSE EFFECT Incoming shortwave solar radiotherapy (UV) Outgoing longwave radiation (infrared) = heat http://www.ldeo.columbia.edu/ GLACIERS ARE shrivel up Alaska Colorado Over a couple of weeks in 2002, a segment of the Antarctic (the Ross Ice Shelf) larger than the evidence of Rhode Island...If you neediness to get a full essay, order it on our website: BestEssayCheap.com

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