Glynis Jehle Morgan Rosenberg

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Presentation transcript:

Glynis Jehle Morgan Rosenberg Sulfur Cycle Glynis Jehle Morgan Rosenberg

A Biogeochemical Cycle Sulfur, a Biogeochemical Cycle Acid Rain SO2 + OH· → HOSO2· HOSO2· + O2 → HO2· + SO3 SO3 (g) + H2O (l) → H2SO4 (l)

Sulfur Fluxes (Amounts in 1012 g S) LITHOSPHERE 2.4 X 1010 Volcanoes Terrestrial Dust Weathering into Rivers Consumption Sedimentation Deposition from Atmosphere 200/yr 252/yr OCEANS 1.3 X 109 Sedimentation Sea Salt Particles Deposition from Atmosphere River Runoff 444/yr 275/yr SOILS/ LAND BIOTA 3 X 105 Biogenic Processes Deposition from Atmosphere 65/yr 2.5/yr

Sulfur Fluxes (Amounts in 1012 g S) LAKES/RIVERS 300 River Runoff Deposition from Atmosphere Weathering from Lithosphere 137/yr 213/yr Atmosphere 4.8 Deposition Terrestrial Dust Biogenic Processes (Land and Ocean) Anthropogenic Emissions Sea Salt Particles Volcanoes 296/yr

Reservoirs and Residence Times Amount, 1012 g S Residence Times (Post-Industrial) Lithosphere 2.4 x 1010 9.52 x 107 Years Ocean 1.3 x 109 2.92 x 106 Years Soils and Land Biota 3 x 105 4.6 x 103 Years Lakes and Rivers 300 1.41 Years Atmosphere 4.8 6 days Total 304.8