date: Fri Jan 21 12:47:20 2005
from: Phil Jones <p.jones@uea.ac.uk>
subject: Re: DECREASE IN GLOBAL TEMPERATURES DUE TO SULPHATES, PARTICULATES
to: John Davies <johnd@foe.co.uk>

    John,
       Been away.  There isn't a simple answer to the question, even roughly.
    They have caused some cooling, but a number depends on the climate
    sensitivity. Best would be to look at the IPCC 3rd Assessment Report.
    Cheers
    Phil
   At 16:32 18/01/2005, you wrote:

     Dear Dr. Phil Jones,
     I hope that it will be possible for you to give a rough estimate to the following
     question.
     ' What is the estimated cooling effect, in degrees Celsius, of Sulphates, Particulates
     etc in the global atmosphere, on the global atmosphere at the surface and near to the
     surface of the earth.'
     All the Best,
     John B Davies.
     --
     John B Davies
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   Prof. Phil Jones
   Climatic Research Unit        Telephone +44 (0) 1603 592090
   School of Environmental Sciences    Fax +44 (0) 1603 507784
   University of East Anglia
   Norwich                          Email    p.jones@uea.ac.uk
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   UK
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