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Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically‐influenced Northern Hemisphere midlatitudes

Geophysical Research Letters · 2007 · Vol. 34(13)

Q. Zhang✉(University at Albany, State University of New York)J. L. Jiménez(University of Colorado Boulder)Manjula R. Canagaratna(Aerodyne Research)J. D. Allan(University of Manchester)Hugh Coe(University of Manchester)I. M. Ulbrich(University of Colorado Boulder)M. Rami Alfarra(Paul Scherrer Institute)Akinori Takami(National Institute for Environmental Studies)A. M. Middlebrook(NOAA Earth System Research Laboratory)Yele Sun(University at Albany, State University of New York)K. Džepina(Cooperative Institute for Research in Environmental Sciences)E. J. Dunlea(University of Colorado Boulder)K. S. Docherty(University of Colorado Boulder)P. F. DeCarlo(Cooperative Institute for Research in Environmental Sciences)D. Salcedo(Universidad Autónoma del Estado de Morelos)T. B. Onasch(Aerodyne Research)John T. Jayne(Aerodyne Research)Takao Miyoshi(National Institute for Environmental Studies)Atsushi ShimonoShiro Hatakeyama(National Institute for Environmental Studies)N. Takegawa(The University of Tokyo)Y. Kondo(The University of Tokyo)Johannes Schneider(Max Planck Institute for Chemistry)Frank Drewnick(Max Planck Institute for Chemistry)Stephan Borrmann(Max Planck Institute for Chemistry)S. Weimer(University at Albany, State University of New York)Kenneth L. Demerjian(University at Albany, State University of New York)P. I. Williams(University of Manchester)Keith Bower(University of Manchester)R. Bahreini(University of Colorado Boulder)L. Cottrell(University of New Hampshire)Robert J. Griffin(University of New Hampshire)Jani Rautiainen(University of Eastern Finland)Junying Sun(Chinese Academy of Meteorological Sciences)Yuhong Zhang(Chinese Academy of Meteorological Sciences)Douglas R. Worsnop(Aerodyne Research)

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Abstract

Organic aerosol (OA) data acquired by the Aerosol Mass Spectrometer (AMS) in 37 field campaigns were deconvolved into hydrocarbon‐like OA (HOA) and several types of oxygenated OA (OOA) components. HOA has been linked to primary combustion emissions (mainly from fossil fuel) and other primary sources such as meat cooking. OOA is ubiquitous in various atmospheric environments, on average accounting for 64%, 83% and 95% of the total OA in urban, urban downwind, and rural/remote sites, respectively. A case study analysis of a rural site shows that the OOA concentration is much greater than the advected HOA, indicating that HOA oxidation is not an important source of OOA, and that OOA increases are mainly due to SOA. Most global models lack an explicit representation of SOA which may lead to significant biases in the magnitude, spatial and temporal distributions of OA, and in aerosol hygroscopic properties.

Atmospheric chemistry and aerosols Air Quality and Health Impacts Atmospheric and Environmental Gas DynamicsAerosolEnvironmental scienceDominance (genetics)Atmospheric sciencesMiddle latitudesNorthern HemisphereCombustionEnvironmental chemistryGasolinePhysical geography