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Cited by 184

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Constraining the contribution of organic acids and AMS m/z 44 to the organic aerosol budget: On the importance of meteorology, aerosol hygroscopicity, and region

Sorooshian, Armin, Murphy, Shane M., Hersey, Scott, Bahreini, Roya, Jonsson, Haflidi, Flagan, Richard C., Seinfeld, John H.·2010·Geophysical Research Letters

Abstract

Airborne measurements in regions of varying meteorology and pollution are used to quantify the contribution of organic acids and a mass spectral marker for oxygenated aerosols, m/z 44, to the total organic aerosol budget. Organic acids and m/z 44 separately are shown to exhibit their highest organic mass fractions in the vicinity of clouds. The contribution of such oxygenated species is shown to increase as a function of relative humidity, aerosol hygroscopicity (and decreasing organic mass fraction), and is typically greater off the California coast versus the continental atmospheres studied. Reasons include more efficient chemistry and partitioning of organic acid precursors with increasing water in the reaction medium, and high aqueous‐phase processing times in boundary layers with higher cloud volume fractions. These results highlight the importance of secondary organic aerosol formation in both wet aerosols and cloud droplets.

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Metadata

Authors
Sorooshian, A., Murphy, S. M., Hersey, S., Bahreini, R., Jonsson, H., Flagan, R. C., & Seinfeld, J. H.
Venue
Geophysical Research Letters
Published
2010-11
Volume
37
Issue
21
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W1843803237
Cited by
184
References
1
FWCI
7.85
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Constraining the contribution of organic acids and AMS m/z 44 to the organic aerosol budget: On the importance of meteorology, aerosol hygroscopicity, and region. https://app.cochat.ai/papers/10.1029/2010gl044951
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Sorooshian, A., Murphy, S. M., Hersey, S., Bahreini, R., Jonsson, H., Flagan, R. C., & Seinfeld, J. H. (2010). Constraining the contribution of organic acids and AMS m/z 44 to the organic aerosol budget: On the importance of meteorology, aerosol hygroscopicity, and region. Geophysical Research Letters. https://doi.org/10.1029/2010gl044951

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