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671emission of DMS from an algal bloom

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  • strobusnana
    Feb 11, 2002
      "In the past five years evidence has accumulated,
      particularly from the careful long term investigations of
      Ayers and his colleagues in Australia, that establishes
      a direct connection between algal growth,
      atmospheric methane sulphonic acid and cloud condensation
      nuclei. This is true for the atmosphere over all the
      world's oceans, even the North Atlantic in spite of the
      huge production of cloud condensation nuclei from
      fossil fuel combustion on the land surfaces around it.
      Indeed we can now say that, but for the algal production
      of dimethyl sulphide (DMS),clouds over the world's
      oceans would be less dense and the world would be a
      hotter place. <br><br>An important missing link is the
      geophysiological connection between climate and the emission of
      DMS by the algae. We do not yet know if changes in
      the sea surface temperature affect algal growth and
      the algal emission of sulphur gases. A tantalizing
      indication of an indirect link between DMS and climate comes
      from observations that suggest that an increase in
      cloud cover, algal density and wind velocity has
      occurred over the oceans in the past decade."<br><br>---
      <br><br>The above excerpt is from a United Nations Lecture
      given by James Lovelock - [Gaia Theorist].<br>The
      complete lecture can be read at the URL given
      below.<br><br><br><a href=http://www.unu.edu/unupress/lecture1.html target=new>http://www.unu.edu/unupress/lecture1.html</a><br>The Evolving Gaia Theory<br><br><br>I enjoyed the
      "hard science" discoveries of this lecture.<br>onchange
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