% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Tan:858323,
author = {Tan, Zhaofeng and Lu, Keding and Jiang, Meiqing and Su,
Rong and Wang, Hongli and Lou, Shengrong and Fu, Qingyan and
Zhai, Chongzhi and Tan, Qinwen and Yue, Dingli and Chen,
Duohong and Wang, Zhanshan and Xie, Shaodong and Zeng, Limin
and Zhang, Yuanhang},
title = {{A}tmospheric oxidation capacity in {C}hinese megacities
during photochemical polluted season: radical budget and
secondary pollutants formation},
journal = {Atmospheric chemistry and physics / Discussions Discussions
[...]},
volume = {959},
issn = {1680-7375},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {FZJ-2018-07211},
pages = {1 - 23},
year = {2018},
abstract = {Atmospheric oxidation capacity is the core of converting
fresh-emitted substances to secondary pollutants. In this
study, we present the in-situ measurements at four Chinese
megacities (Beijing, Shanghai, Guangzhou, and Chongqing) in
China during photochemical polluted seasons. The atmospheric
oxidation capacity is evaluated using an observational-based
model with the input of radical chemistry precursor
measurements. The radical budget analysis illustrates the
importance of HONO and HCHO photolysis, which contribute
nearly half of the total radical primary sources. The
radical propagation is efficient due to abundant of NO in
the urban environments. Hence, the production rate of
secondary pollutants, i.e. ozone and fine particle
precursors (H2SO4, HNO3, and ELVOCs) is fast resulting in
secondary air pollution. The ozone budget demonstrates that
strong ozone production occurs in the urban area which
results in fast ozone concentration increase locally and
further transported to downwind areas. On the other hand,
the O3-NOx-VOC sensitivity tests show that ozone production
is VOC-limited, among which alkenes and aromatics should be
first mitigated for ozone pollution control in the presented
four megacities. However, NOx emission control will lead to
more server ozone pollution due to the drawback-effect of
NOx reduction. For fine particle pollution, the role of
HNO3−NO3− partitioning system is investigated with a
thermal dynamic model (ISORROPIA2) due to the importance of
particulate nitrate during photochemical polluted seasons.
The strong nitrate acid production converts efficiently to
nitrate particles due to high RH and ammonium-rich
conditions during photochemical polluted seasons. This study
highlights the efficient radical chemistry maintains the
atmospheric oxidation capacity in Chinese megacities, which
results in secondary pollutions characterized by ozone and
fine particles.},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
doi = {10.5194/acp-2018-959},
url = {https://juser.fz-juelich.de/record/858323},
}