The sulfur cycle in the marine atmosphere.

O. B. Toon, J. F. Kasting, R. P. Turco, M. S. Liu

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86 Scopus citations


A one-dimensional photochemical model is used to simulate the sulfur cycle in the marine atmosphere. CS2 concentrations reported over the oceans are an order of magnitude higher than those expected on the basis of a 0.5 Tg S yr-1 source estimated from water column measurements; the discrepancy may reflect continental contaminants. We require a sink for OCS of magnitude 1-4 Tg S yr-1 in order to balance its budget. Most of the SO2 in the marine atmosphere apparently derives from oxidation of DMS, which has an estimated source of about 40 Tg S yr-1. The main loss process for DMS is reaction with OH. SO2 concentrations increase with altitude in the marine troposphere, while sulfate concentrations decrease with altitude.-from Authors

Original languageEnglish (US)
Pages (from-to)943-963
Number of pages21
JournalJournal of Geophysical Research
Issue numberD1
StatePublished - 1987

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology


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