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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},
}