Assume emissions of all sulfur compounds increase from 100 x 1012 grams/year up to 150 x 1012 grams/year, while the global average concentration increases from 0.906 ppb to 1 ppb. Removal by wet deposition under these new conditions has a rate constant kwet = 0.3 week-1. a. For the mass balance of all sulfur compounds, explain in 2-3 short sentences why there is no chemical reaction term in the mass balance equation, only wet and dry deposition. b. Determine the residence time of sulfur compounds in the atmosphere due to dry deposition alone, assuming the atmosphere is in steady state with respect to sulfur.
Assume emissions of all sulfur compounds increase from 100 x 1012 grams/year up to 150 x 1012 grams/year, while the global average concentration increases from 0.906 ppb to 1 ppb. Removal by wet deposition under these new conditions has a rate constant kwet = 0.3 week-1. a. For the mass balance of all sulfur compounds, explain in 2-3 short sentences why there is no chemical reaction term in the mass balance equation, only wet and dry deposition. b. Determine the residence time of sulfur compounds in the atmosphere due to dry deposition alone, assuming the atmosphere is in steady state with respect to sulfur.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Assume emissions of all sulfur compounds increase from 100 x 1012 grams/year up to 150 x 1012 grams/year, while the global average concentration increases from 0.906 ppb to 1 ppb. Removal by wet deposition under these new conditions has a rate constant kwet = 0.3 week-1.
a. For the mass balance of all sulfur compounds, explain in 2-3 short sentences why there is no chemical reaction term in the mass balance equation, only wet and dry deposition.
b. Determine the residence time of sulfur compounds in the atmosphere due to dry deposition alone, assuming the atmosphere is in steady state with respect to sulfur.
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