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SUMMARY:Tropospheric ozone: Short-lived climate forcer - Dr Richard Derwen
 t\, rdscientific
DTSTART:20170515T131500Z
DTEND:20170515T141500Z
UID:TALK72059@talks.cam.ac.uk
CONTACT:Paul Griffiths
DESCRIPTION:The Intergovernmental Panel on Climate Change ranks tropospher
 ic ozone as the third most important greenhouse gas after carbon dioxide a
 nd methane. Furthermore\, it also expresses a high level of confidence in 
 the position of tropospheric ozone in this ranking. Do we share the high l
 evel of confidence expressed by the IPCC in its estimate of the radiative 
 forcing by tropospheric ozone between 1750 and 2011? Since there are no re
 liable instrumental records for ozone prior to 1957\, radiative forcing es
 timates have to be based entirely on tropospheric ozone models. In contras
 t\, there are reliable ice core records for carbon dioxide and methane whi
 ch go back to pre-industrial times and beyond. What\, therefore\, is our l
 evel of confidence in tropospheric ozone models?\n
LOCATION:Pfizer Lecture Theatre\, Department of Chemistry
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