Articles | Volume 16, issue 10
Atmos. Chem. Phys., 16, 6537–6546, 2016
https://doi.org/10.5194/acp-16-6537-2016
Atmos. Chem. Phys., 16, 6537–6546, 2016
https://doi.org/10.5194/acp-16-6537-2016

Research article 27 May 2016

Research article | 27 May 2016

Impacts of anthropogenic and natural sources on free tropospheric ozone over the Middle East

Zhe Jiang et al.

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Short summary
We quantify the impacts of anthropogenic and natural sources on free tropospheric ozone over the Middle East, using the adjoint of the GEOS-Chem model with updated NOx emissions estimates from an ensemble Kalman filter. We show that the global total contribution of lightning NOx on free tropospheric O3 over the Middle East is about 2 times larger than that from global anthropogenic sources. The summertime free tropospheric O3 enhancement is primarily due to Asian NOx emissions.
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