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Secondary Production of Organic Aerosols from Biogenic VOCs over Mt. Fuji, Japan

Identifieur interne : 000300 ( PascalFrancis/Checkpoint ); précédent : 000299; suivant : 000301

Secondary Production of Organic Aerosols from Biogenic VOCs over Mt. Fuji, Japan

Auteurs : PINGQING FU [Japon, République populaire de Chine] ; Kimitaka Kawamura [Japon] ; JING CHEN [République populaire de Chine] ; Yuzo Miyazaki [Japon]

Source :

RBID : Pascal:15-0033669

Descripteurs français

English descriptors

Abstract

We investigated organic molecular compositions of summertime aerosols collected at the summit of Mt Fuji (3776 m a.s.l.) in July-August 2009. More than 120 organic species were identified using GC/MS. Concentrations of both primary and secondary organic aerosol (SOA) tracers in whole-day samples were 4-20 times higher than those in nighttime samples, suggesting that valley breeze is an efficient mechanism to uplift the aerosols and precursors from the ground surface to mountaintop in daytime. Using a tracer-based method, we estimated the concentrations of secondary organic carbon (SOC) derived from isoprene, a/β-pinene, and β-caryophyllene to be 2.2-51.2 ngC m-3 in nighttime and 227-1120 ngC m-3 during whole-day. These biogenic SOCs correspond to 0.80-31.9% and 26.8-57.4% of aerosol organic carbon in nighttime and whole-day samples, respectively. This study demonstrates that biogenic SOA, which is controlled by the valley breeze, is a significant fraction of free tropospheric aerosols over Mt. Fuji in summer.


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Pascal:15-0033669

Le document en format XML

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<sup>-3</sup>
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<sup>-3</sup>
in nighttime and 227-1120 ngC m
<sup>-3</sup>
during whole-day. These biogenic SOCs correspond to 0.80-31.9% and 26.8-57.4% of aerosol organic carbon in nighttime and whole-day samples, respectively. This study demonstrates that biogenic SOA, which is controlled by the valley breeze, is a significant fraction of free tropospheric aerosols over Mt. Fuji in summer.</s0>
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<name sortKey="Pingqing Fu" sort="Pingqing Fu" uniqKey="Pingqing Fu" last="Pingqing Fu">PINGQING FU</name>
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<name sortKey="Jing Chen" sort="Jing Chen" uniqKey="Jing Chen" last="Jing Chen">JING CHEN</name>
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