BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Long-term trends in ozone concentrations in the UK: local\, region
 al and global influences - Dr Mike Jenkin
DTSTART:20150216T150000Z
DTEND:20150216T160000Z
UID:TALK56462@talks.cam.ac.uk
CONTACT:Dr Alex Archibald
DESCRIPTION:Ozone (O<sub>3</sub>) is an important transboundary air pollut
 ant that\, at elevated concentrations\, has adverse impacts on human healt
 h and the natural environment. Its control has therefore been a major obje
 ctive of international environmental policy for many decades.  This presen
 tation will make use of data from Defra’s automatic monitoring network t
 o examine trends in O<sub>3</sub> concentrations at UK sites since 1990\, 
 which will be used to illustrate the impacts of chemical processes occurri
 ng on local\, regional and hemispheric scales. The data will be interprete
 d by consideration of historical trends in the emissions of the precursor 
 nitrogen oxides (NOx) and volatile organic compounds (VOCs) and current un
 derstanding of their detailed chemical processing.
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
END:VEVENT
END:VCALENDAR