Skip to main content
Open Access Publications from the University of California

UC Irvine

UC Irvine Previously Published Works bannerUC Irvine

Unexpected consequences of increasing CO2 and ocean acidity on marine production of DMS and CH2ClI: Potential climate impacts

  • Author(s): Wingenter, OW
  • Haase, KB
  • Zeigler, M
  • Blake, DR
  • Rowland, FS
  • Sive, BC
  • Paulino, A
  • Thyrhaug, R
  • Larsen, A
  • Schulz, K
  • Meyerhöfer, M
  • Riebesell, U
  • et al.

Increasing atmospheric mixing ratios Of CO have already lowered surface ocean pH by 0.1 units compared to preindustrial values and pH is expected to decrease an additional 0.3 units by the end of this century. Pronounced physiological changes in some phytoplankton have been observed during previous CO perturbation experiments. Marine microorganisms are known to consume and produce climate-relevant organic gases. Concentrations of (CH ) S (DMS) and CH ClI were quantified during the Third Pelagic Ecosystem CO Enrichment Study. Positive feedbacks were observed between control mesocosms and those simulating future CO . Dimethyl sulfide was 26% (±10%) greater than the controls in the 2× ambient CO treatments, and 18% (±10%) higher in the 3xCO mesocosms. For CH lI the 2×CO treatments were 46% (±4%) greater than the controls and the 3×CO mesocosms were 131% (±11%) higher. These processes may help contribute to the homeostasis of the planet. Copyright 2007 by the American Geophysical Union. 2 2 3 2 2 2 2 2 2 C 2 2

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View