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Lecture 4

Geography 1400F/G Lecture Notes - Lecture 4: Taylor Dome, Lithosphere, Ower


Department
Geography
Course Code
GEOG 1400F/G
Professor
Anthony Weis
Lecture
4

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UNIT 4: CLIMATE CHANGE & FOSSIL ENERGY
Fossil Fuels & the Carbon Cycle
IMPORTANT ASPECT OF UNIT: understanding past climatic changes to
appreciate the significance of future climate change
…an important aspect of understanding anthropogenic climate change
is understanding how humans have changed the carbon cycle

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Biogeochemical Cycles
repeated movements of elements essential to life (e.g. carbon, nitrogen and
phosphorous) through ‘reservoirs’ (or sinks):
atmosphere
hydrosphere
biosphere
pedosphere
lithosphere
*** in short, elements cycle through air, water, living things, soils, & rocks ***
RESERVOIRS: both biotic and abiotic
FLUX: movement between reservoirs over time
RESIDENCE TIME: average amount of time that element resides in a
given reservoir
water pollution & consumption

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The Global Carbon Cycle
Atmosphere
Biosphere
Pedosphere
Oceans
CARBON naturally cycles between…
…carbon
‘sinks’
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