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dc.contributor.authorLeibensperger, Eric Michael
dc.contributor.authorMickley, Loretta J.
dc.contributor.authorJacob, Daniel J.
dc.date.accessioned2011-02-14T14:29:08Z
dc.date.issued2008
dc.identifier.citationLeibensperger, Eric M., Loretta J. Mickley, Daniel J. Jacob. 2008. Sensitivity of U.S. air quality to mid-latitude cyclone frequency and implications of 1980-2006 climate change. Atmospheric Chemistry and Physics 8(23): 7075-7086.en_US
dc.identifier.issn1680-7316en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4724797
dc.description.abstractWe show that the frequency of summertime mid-latitude cyclones tracking across eastern North America at 40°–50° N (the southern climatological storm track) is a strong predictor of stagnation and ozone pollution days in the eastern US. The NCEP/NCAR Reanalysis, going back to 1948, shows a significant long-term decline in the number of summertime mid-latitude cyclones in that track starting in 1980 (−0.15 a−1). The more recent but shorter NCEP/DOE Reanalysis (1979–2006) shows similar interannual variability in cyclone frequency but no significant long-term trend. Analysis of NOAA daily weather maps for 1980–2006 supports the trend detected in the NCEP/NCAR Reanalysis 1. A GISS general circulation model (GCM) simulation including historical forcing by greenhouse gases reproduces this decreasing cyclone trend starting in 1980. Such a long-term decrease in mid-latitude cyclone frequency over the 1980–2006 period may have offset by half the ozone air quality gains in the northeastern US from reductions in anthropogenic emissions. We find that if mid-latitude cyclone frequency had not declined, the northeastern US would have been largely compliant with the ozone air quality standard by 2001. Mid-latitude cyclone frequency is expected to decrease further over the coming decades in response to greenhouse warming and this will necessitate deeper emission reductions to achieve a given air quality goal.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherCopernicus Publicationsen_US
dc.relation.isversionofhttp://www.atmos-chem-phys.net/volumes_and_issues.htmlen_US
dc.relation.hasversionhttp://www.atmos-chem-phys.net/8/7075/2008/acp-8-7075-2008.pdfen_US
dash.licenseLAA
dc.titleSensitivity of US Air Quality to Mid-Latitude Cyclone Frequency and Implications of 1980–2006 Climate Changeen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalAtmospheric Chemistry and Physicsen_US
dash.depositing.authorJacob, Daniel J.
dc.date.available2011-02-14T14:29:08Z
dc.identifier.doi10.5194/acpd-8-12253-2008
dash.contributor.affiliatedLeibensperger, Eric Michael
dash.contributor.affiliatedMickley, Loretta
dash.contributor.affiliatedJacob, Daniel
dc.identifier.orcid0000-0002-6373-3100


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