The Effect of increasing CO2 and Ocean Acidity on Marine Production of DMS and CH2ClI
Abstract
Increasing concentrations of atmospheric CO2 have already lowered ocean pH by 0.1 units compared to preindustrial values, and ocean pH is expected to decrease an additional 0.3 by the end of this century. Pronounced physiological changes in some phytoplankton have been observed during previous CO2 perturbation experiments. Marine microorganisms are known to consume and produce climate-relevant organic gases. Concentrations of (CH3)2S (DMS) and CH2ClI were quantified during Third Pelagic Ecosystem CO2 Enrichment Study (PeECE III). Significant increases were observed between control mesocosms and those simulating future ocean acidity. This experiment underscores unknown feedbacks of increasing atmospheric CO2 on the atmosphere and climate.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2006
- Bibcode:
- 2006AGUFM.B51A0299W
- Keywords:
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- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0312 Air/sea constituent fluxes (3339;
- 4504);
- 0321 Cloud/radiation interaction;
- 0426 Biosphere/atmosphere interactions (0315);
- 0489 Trace element cycling (4875)