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dc.contributor.authorChan Miller, Christopher
dc.contributor.authorJacob, Daniel J.
dc.contributor.authorGonzález Abad, Gonzalo
dc.contributor.authorChance, Kelly
dc.date.accessioned2019-10-03T14:39:14Z
dc.date.issued2016
dc.identifier.citationChan Miller, Christopher, Daniel J. Jacob, Gonzalo González Abad, and Kelly Chance. 2016. “Hotspot of Glyoxal over the Pearl River Delta Seen from the OMI Satellite Instrument: Implications for Emissions of Aromatic Hydrocarbons.” Atmospheric Chemistry and Physics 16 (7): 4631–39. https://doi.org/10.5194/acp-16-4631-2016.
dc.identifier.issn1680-7316
dc.identifier.issn1680-7324
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41461258*
dc.description.abstractThe Pearl River delta (PRD) is a densely populated hub of industrial activity located in southern China. OMI (Ozone Monitoring Instrument) satellite observations reveal a large hotspot of glyoxal (CHOCHO) over the PRD that is almost twice as large as any other in Asia. Formaldehyde (HCHO) and NO2 observed by OMI are also high in the PRD but no more than in other urban/industrial areas of China. The CHOCHO hotspot over the PRD can be explained by industrial paint and solvent emissions of aromatic volatile organic compounds (VOCs), with toluene being a dominant contributor. By contrast, HCHO in the PRD originates mostly from VOCs emitted by combustion (principally vehicles). By applying a plume transport model to wind-segregated OMI data, we show that the CHOCHO and HCHO enhancements over the PRD observed by OMI are consistent with current VOC emission inventories. Prior work using CHOCHO retrievals from the SCIAMACHY satellite instrument suggested that emission inventories for aromatic VOCs in the PRD were too low by a factor of 10-20; we attribute this result in part to bias in the SCIAMACHY data and in part to underestimated CHOCHO yields from oxidation of aromatics. Our work points to the importance of better understanding CHOCHO yields from the oxidation of aromatics in order to interpret space-based CHOCHO observations in polluted environments.
dc.language.isoen_US
dc.publisherEuropean Geosciences Union
dash.licenseLAA
dc.titleHotspot of Glyoxal Over the Pearl River Delta Seen from the OMI Satellite Instrument: Implications for Emissions of Aromatic Hydrocarbons
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalAtmospheric Chemistry and Physics
dash.depositing.authorChance, Kelly V.::c1853969e866fbac514a5665de391746::600
dc.date.available2019-10-03T14:39:14Z
dash.workflow.comments1Science Serial ID 11156
dc.identifier.doi10.5194/acp-16-4631-2016
dash.source.volume16;7
dash.source.page4631-4639


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