The case against climate regulation via oceanic phytoplankton sulphur emissions

  title={The case against climate regulation via oceanic phytoplankton sulphur emissions},
  author={Patricia K. Quinn and Timothy S. Bates},
More than twenty years ago, a biological regulation of climate was proposed whereby emissions of dimethyl sulphide from oceanic phytoplankton resulted in the formation of aerosol particles that acted as cloud condensation nuclei in the marine boundary layer. In this hypothesis—referred to as CLAW—the increase in cloud condensation nuclei led to an increase in cloud albedo with the resulting changes in temperature and radiation initiating a climate feedback altering dimethyl sulphide emissions… Expand
Commentary regarding “Simulated perturbation in the sea-to-air flux of dimethylsulfide and the impact on polar climate”
The anthropogenic contribution to cloud condensation nuclei is known to be large due to pollutant emissions. However, the natural processes that regulate cloud condensation nuclei over many regionsExpand
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Marine Aerosols and Clouds.
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Simulated perturbation in the sea-to-air flux of dimethylsulfide and the impact on polar climate
Marine biogenic emission of dimethylsulfide (DMS) has been well recognized as the main natural source of reduced sulfur to the remote marine atmosphere and has the potential to affect climate,Expand
Impact of Arctic meltdown on the microbial cycling of sulphur
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The progressive loss of Arctic sea ice leads to increased surface emissions of Dimethyl Sulphide (DMS), which is the dominant local source of sulphate aerosols. We test the hypothesis that cloudExpand


Atmospheric sulphur and cloud condensation nuclei in marine air in the Southern Hemisphere
Measurements of atmospheric sulphur species made in Southern Ocean air, at the Cape Grim Baseline Air Pollution Station, are reviewed in an attempt to discern the role played by oceanic emissions ofExpand
Seasonal relationship between cloud condensation nuclei and aerosol methanesulphonate in marine air
CHARLSON,et al.1 have suggested that cloud-droplet concentrations in remote marine regions might be indirectly controlled by dimethylsulphide (DMS) emissions from marine phytoplankton. Attempts toExpand
A review of natural aerosol interactions and feedbacks within the Earth system
Abstract. The natural environment is a major source of atmospheric aerosols, including dust, secondary organic material from terrestrial biogenic emissions, carbonaceous particles from wildfires, andExpand
Source and evolution of the marine aerosol—A new perspective
[1] The “indirect effect of aerosols” refers to their ability to influence cloud radiative properties, and is considered to be one of the larger uncertainties in climate prediction. Oceans coverExpand
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The production of dimethylsulphide (DMS) by ocean phytoplankton is hypothesized to form part of a feedback process on global climate. Changes in the DMS flux to the atmosphere cause changes toExpand
Weak response of oceanic dimethylsulfide to upper mixing shoaling induced by global warming
It is suggested that the “plankton–DMS–clouds–earth albedo feedback” hypothesis is less strong a long-term thermostatic system than a seasonal mechanism that contributes to regulate the solar radiation doses reaching the earth's biosphere. Expand
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The major source of cloud-condensation nuclei (CCN) over the oceans appears to be dimethylsulphide, which is produced by planktonic algae in sea water and oxidizes in the atmosphere to form aExpand
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There has been considerable debate about the relative importance of sea-salt and sulphate from non-sea-salt sources in determining aerosol radiative effects in the marine boundary layer. In theExpand
Biogenic sulfur emissions and aerosols over the tropical South Atlantic: 3. Atmospheric dimethylsulfide, aerosols and cloud condensation nuclei
We measured dimethylsulfide in air (DMSa) and the number concentration, size distribution, and chemical composition of atmospheric aerosols, including the concentration of cloud condensation nucleiExpand
Effect on global warming of wind-dependent aerosol generation at the ocean surface
CONSIDERABLE effort is being devoted1,2 to elucidating the influence of clouds on climate, and in particular to assessing the influence on global warming of modifications to cloud cover orExpand