TY - JOUR
T1 - Global Impact of Lightning-Produced Oxidants
AU - Mao, Jingqiu
AU - Zhao, Tianlang
AU - Keller, Christoph A.
AU - Wang, Xuan
AU - McFarland, Patrick J.
AU - Jenkins, Jena M.
AU - Brune, William H.
N1 - Funding Information:
J. Mao acknowledges GEOS‐Chem supporting team for help. J. Mao and T. Zhao acknowledge the support from NASA grants 80NSSC21K0428 and 80NSSC19M0154 and NSF grant AGS‐2026821. W. Brune acknowledges support from NSF AGS‐1834711 and NASA NNX12AB84G. The authors thank J. Peischl, I. Pollack and T. Ryerson, for the use of their measurements from DC3 aircraft campaign. The authors thank Dr Lee T. Murray and another reviewer for their insightful comments on an early version of the draft.
Publisher Copyright:
© 2021. American Geophysical Union. All Rights Reserved.
PY - 2021/11/16
Y1 - 2021/11/16
N2 - Lightning plays a major role in tropospheric oxidation, and its role on modulating tropospheric chemistry was thought to be emissions of nitrogen oxides (NOx). Recent field and laboratory measurements demonstrate that lightning generates extremely large amounts of oxidants, including hydrogen oxides (HOx) and O3. Here, we implement these lightning-produced oxidants in a global chemical transport model to examine its global impact on tropospheric composition. We find that lightning-produced oxidants can increase global mass weighted OH by 0.3%–10% and affect CO, O3, and reactive nitrogen substantially, depending on the emission strength of oxidants from lightning. Our work highlights the importance and uncertainties of lightning-produced oxidants, as well as the need for rethinking the role of lightning in tropospheric oxidation chemistry.
AB - Lightning plays a major role in tropospheric oxidation, and its role on modulating tropospheric chemistry was thought to be emissions of nitrogen oxides (NOx). Recent field and laboratory measurements demonstrate that lightning generates extremely large amounts of oxidants, including hydrogen oxides (HOx) and O3. Here, we implement these lightning-produced oxidants in a global chemical transport model to examine its global impact on tropospheric composition. We find that lightning-produced oxidants can increase global mass weighted OH by 0.3%–10% and affect CO, O3, and reactive nitrogen substantially, depending on the emission strength of oxidants from lightning. Our work highlights the importance and uncertainties of lightning-produced oxidants, as well as the need for rethinking the role of lightning in tropospheric oxidation chemistry.
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U2 - 10.1029/2021GL095740
DO - 10.1029/2021GL095740
M3 - Article
AN - SCOPUS:85118835444
SN - 0094-8276
VL - 48
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 21
M1 - e2021GL095740
ER -