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@ARTICLE{Qu:902385,
author = {Qu, Hang and Wang, Yuhang and Zhang, Ruixiong and Liu,
Xiaoxi and Huey, Lewis Gregory and Sjostedt, Steven and
Zeng, Limin and Lu, Keding and Wu, Yusheng and Shao, Min and
Hu, Min and Tan, Zhaofeng and Fuchs, Hendrik and Broch,
Sebastian and Wahner, Andreas and Zhu, Tong and Zhang,
Yuanhang},
title = {{C}hemical {P}roduction of {O}xygenated {V}olatile
{O}rganic {C}ompounds {S}trongly {E}nhances
{B}oundary-{L}ayer {O}xidation {C}hemistry and {O}zone
{P}roduction},
journal = {Environmental science $\&$ technology},
volume = {55},
number = {20},
issn = {1520-5851},
address = {Columbus, Ohio},
publisher = {American Chemical Society},
reportid = {FZJ-2021-04219},
pages = {13718 - 13727},
year = {2021},
abstract = {Photolysis of oxygenated volatile organic compounds (OVOCs)
produces a primary source of free radicals, including OH and
inorganic and organic peroxy radicals (HO2 and RO2),
consequently increasing photochemical ozone production. The
amplification of radical cycling through OVOC photolysis
provides an important positive feedback mechanism to
accelerate ozone production. The large production of OVOCs
near the surface helps promote photochemistry in the whole
boundary layer. This amplifier effect is most significant in
regions with high nitrogen oxides (NOx) and VOC
concentrations such as Wangdu, China. Using a 1-D model with
comprehensive observations at Wangdu and the Master Chemical
Mechanism (MCM), we find that OVOC photolysis is the largest
free-radical source in the boundary layer $(46\%).$ The
condensed chemistry mechanism we used severely
underestimates the OVOC amplifier effect in the boundary
layer, resulting in a lower ozone production rate
sensitivity to NOx emissions. Due to this underestimation,
the model-simulated threshold NOx emission value, below
which ozone production decreases with NOx emission decrease,
is biased low by $24\%.$ The underestimated OVOC amplifier
effect in a condensed mechanism implies a low bias in the
current 3-D model-estimated efficacy of NOx emission
reduction on controlling ozone in polluted urban and
suburban regions of China.},
cin = {IEK-8},
ddc = {333.7},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {2111 - Air Quality (POF4-211)},
pid = {G:(DE-HGF)POF4-2111},
typ = {PUB:(DE-HGF)16},
pubmed = {34623137},
UT = {WOS:000710453500032},
doi = {10.1021/acs.est.1c04489},
url = {https://juser.fz-juelich.de/record/902385},
}