Articles | Volume 18, issue 14
Atmos. Chem. Phys., 18, 10433–10457, 2018
https://doi.org/10.5194/acp-18-10433-2018

Special issue: Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5)...

Atmos. Chem. Phys., 18, 10433–10457, 2018
https://doi.org/10.5194/acp-18-10433-2018
Research article
23 Jul 2018
Research article | 23 Jul 2018

Observations of sesquiterpenes and their oxidation products in central Amazonia during the wet and dry seasons

Lindsay D. Yee et al.

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Short summary
Biogenic volatile organic compounds react in the atmosphere to form secondary organic aerosol, yet the chemical pathways remain unclear. We collected filter samples and deployed a semi-volatile thermal desorption aerosol gas chromatograph in the central Amazon. We measured 30 sesquiterpenes and 4 diterpenes and find them to be important for reactive ozone loss. We estimate that sesquiterpene oxidation contributes at least 0.4–5 % (median 1 %) of observed submicron organic aerosol mass.
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