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SUMMARY:The Tropospheric Ozone Assessment Report:  A community-wide effort
  to quantify tropospheric ozone in a rapidly changing world - Dr Owen Coop
 er\, Earth System Research Laboratory\, NOAA
DTSTART:20160902T100000Z
DTEND:20160902T111500Z
UID:TALK67298@talks.cam.ac.uk
CONTACT:Paul Griffiths
DESCRIPTION:Tropospheric ozone is a greenhouse gas and pollutant detriment
 al to human health and crop and ecosystem productivity.  Since 1990 a larg
 e portion of the anthropogenic emissions that react in the atmosphere to p
 roduce ozone has shifted from North America and Europe to Asia.  This rapi
 d shift\, coupled with limited ozone monitoring in developing nations\, ha
 s left scientists unable to answer the most basic questions: Which regions
  of the world have the greatest human and plant exposure to ozone pollutio
 n?  Is ozone continuing to decline in nations with strong emissions contro
 ls?  To what extent is ozone increasing in the developing world?  How can 
 the atmospheric sciences community facilitate access to the ozone metrics 
 necessary for quantifying ozone’s impact on human health and crop/ecosys
 tem productivity?  \n\nTo answer these questions the International Global 
 Atmospheric Chemistry Project recently initiated the Tropospheric Ozone As
 sessment Report (TOAR).  With over 220 members from 36 nations\, TOAR’s 
 mission is to provide the research community with an up-to-date scientific
  assessment of tropospheric ozone’s global distribution and trends from 
 the surface to the tropopause.  TOAR has also built the world’s largest 
 database of surface ozone observations and is generating ozone exposure an
 d dose metrics at thousands of measurement sites around the world\, freely
  accessible for research on the global-scale impact of ozone on climate\, 
 human health and crop/ecosystem productivity.  \n\nThis talk will present 
 the latest findings from TOAR revealing the regions of the world with extr
 eme and worsening levels of surface ozone pollution.  From a broader persp
 ective\, recent satellite data show a significant increase in the troposph
 eric ozone burden which will be assessed in light of current emissions inv
 entories\, satellite detected tropospheric NO2 and model analyses of the e
 quatorward shift of ozone precursor emissions.  Finally\, the recent evolu
 tion of global ozone trends will be compared to the ACCMIP 2030 projection
 s to gauge the expectation that the global tropospheric ozone burden will 
 increase under business as usual emissions increases. \n
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
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