Chemical characterization of secondary organic aerosol at a rural site in the southeastern US: insights from simultaneous high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) and FIGAERO chemical ionization mass spectrometer (CIMS) measurements

Chen, Yunle; Takeuchi, Masayuki; Nah, Theodora; Xu, Lu; Canagaratna, Manjula R.; Stark, Harald; Baumann, Karsten; Canonaco, Francesco; Prévôt, André S. H.; Huey, L. Gregory; Weber, Rodney J.; Ng, Nga L.

doi:https://doi.org/10.5194/acp-20-8421-2020

Articles | Volume 20, issue 14

https://doi.org/10.5194/acp-20-8421-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-8421-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 14

Research article

|

17 Jul 2020

Research article |

| 17 Jul 2020

Chemical characterization of secondary organic aerosol at a rural site in the southeastern US: insights from simultaneous high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) and FIGAERO chemical ionization mass spectrometer (CIMS) measurements

Yunle Chen, Masayuki Takeuchi, Theodora Nah, Lu Xu, Manjula R. Canagaratna, Harald Stark, Karsten Baumann, Francesco Canonaco, André S. H. Prévôt, L. Gregory Huey, Rodney J. Weber, and Nga L. Ng

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RC1: 'Review of acp-2020-126', Anonymous Referee #1, 07 Apr 2020
RC2: '“Chemical Characterization of Secondary Organic Aerosol at a Rural Site in the Southeastern U.S.: Insights from Simultaneous HR-ToF-AMS and FIGAERO-CIMS Measurements” by Yunle Chen et al.', Anonymous Referee #2, 09 Apr 2020
AC1: 'Responses to reviewers' comments', Yunle Chen, 02 Jun 2020

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AR: Author's response | RR: Referee report | ED: Editor decision

AR by Yunle Chen on behalf of the Authors (03 Jun 2020) Author's response Manuscript

ED: Publish subject to technical corrections (17 Jun 2020) by Stefania Gilardoni

AR by Yunle Chen on behalf of the Authors (18 Jun 2020) Manuscript

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Short summary

Two online mass spectrometry instruments, an aerosol mass spectrometer and a chemical ionization mass spectrometer equipped with a filter inlet for gases and aerosols, were deployed at Yorkville, GA, for a comprehensive characterization of organic aerosol. We observed notable secondary organic aerosol formation from isoprene and monoterpenes via different pathways during both day and night, and a series of highly oxidized acid-like compounds was found to be closely related to aged SOA.