Exercise 3 Pre - 2d. The 5.3% seems small. It matters...

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Exercise 3 Biogeochemical Cycles Pre-Exercise Assignment Jong Park 1a. around 315ppm in 1958 and around 363ppm in 1997 1b. 48ppm; 89% of the increase from 1958 to 2000 1c. I think the origin of rise is from deforestation. 1d. burning more fossil fuels and increase in emission of CO2 from industrialization are potential sources of the CO2. 1e. the cause of fluctuations in the graph is the season. In summer CO2 concentration decreases because the total amount of photosynthesis exceeds that of respiration. In winter, the green plants become less active and the total amount of respiration exceeds that of photosynthesis. 2a. storage in marine sediments and rocks is the largest carbon storage on the Earth. It is roughly 100,000,000,000,000,000 metric tons. (100,000,000 billions of metric tons) 2b. Burning fossil fuels is the largest source of anthropogenic carbon. 2c. Compared to the flux of photosynthesis and respiration, burning fossil fuel contributes only 5.3 percent of carbon emission to the atmosphere.
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Unformatted text preview: 2d. The 5.3% seems small. It matters because addition of CO2 to atmosphere by human activity disrupts the natural cycle of carbon. 2e. 1.13% = CO2 from fossil fuels/CO2 in land plants; 0.0166% = CO2 from fossil fuels/CO2 stored in ocean; 0.0000063% = CO2 from fossil fuels/CO2 stored in marine sediments and sedimentary rocks. 2f. Even though human interference to carbon cycle is relatively minimal, the extra addition of CO2 into the atmosphere will eventually harmfully affect global ecology. 3a. Missing carbon sink describes the amount of CO2 absorbed or lost through some kind of indefinable process. 3b. It is important to clarify how much of missing carbon sink is due to oceanic or terrestrial region. Unbalanced carbon cycle is a global problem, and it is important to know how it is exactly working. Knowing how much each region contributes to sinking of CO2 will help scientists understand at where and of how much the unbalance of CO2 cycle occurs....
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This note was uploaded on 02/02/2011 for the course ES 10 taught by Professor Kondolf during the Fall '09 term at University of California, Berkeley.

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Exercise 3 Pre - 2d. The 5.3% seems small. It matters...

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