Widespread pollution from secondary sources of organic aerosols during winter in the northeastern US

Shah, Viral; Jaeglé, Lyatt; Jimenez, Jose L.; Schroder, Jason C.; Campuzano‐Jost, Pedro; Campos, Teresa L.; Reeves, John M.; Stell, Meghan; Brown, Steven S.; Lee, Ben H.; Lopez‐Hilfiker, Felipe D.; Thornton, Joel A.

doi:10.1029/2018GL081530

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Widespread pollution from secondary sources of organic aerosols during winter in the northeastern US

2019
By Shah, Viral ; Jaeglé, Lyatt ; Jimenez, Jose L. ; ...
Source: Geophysical Research Letters, 46(5), 2974-2983

[PDF-1.24 MB]

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Geophysical Research Letters
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Shah, Viral ; Jaeglé, Lyatt ; Jimenez, Jose L. ; Schroder, Jason C. ; Campuzano‐Jost, Pedro ; ... More +

Shah, Viral ; Jaeglé, Lyatt ; Jimenez, Jose L. ; Schroder, Jason C. ; Campuzano‐Jost, Pedro ; Campos, Teresa L. ; Reeves, John M. ; Stell, Meghan ; Brown, Steven S. ; Lee, Ben H. ; Lopez‐Hilfiker, Felipe D. ; Thornton, Joel A. Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; OAR (Oceanic and Atmospheric Research)

CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; OAR (Oceanic and Atmospheric Research) Less -
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Secondary organic aerosol (SOA) from pollution sources is thought to be a minor component of organic aerosol (OA) and fine particulate matter beyond the urban scale. Here we present airborne observations of OA in the northeastern United States, showing that 58% of OA over the region during winter is secondary and originates from pollution sources. We observed a doubling of OA mass from SOA formation in aged emissions, with unexpected similarity to OA growth observed in polluted areas in the summer. A regional model with a simple SOA parameterization based on summer measurements reproduces these winter observations and shows that pollution SOA is widespread, accounting for 14% of submicron particulate matter in near-surface air. This source of particulate matter is largely unaccounted for in air quality management in the northeastern United States and other polluted areas.
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Aerosols Air—Pollution
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Geophysical Research Letters, 46(5), 2974-2983
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https://doi.org/10.1029/2018GL081530
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Journal Article
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urn:sha256:e1391e5ba98caaf38f2ff05f0282fa10b6d32de606b15e0d0e041b4c4b707f5b
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Widespread pollution from secondary sources of organic aerosols during winter in the northeastern US

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