Articles | Volume 17, issue 11
Atmos. Chem. Phys., 17, 6743–6757, 2017
https://doi.org/10.5194/acp-17-6743-2017

Special issue: The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

Atmos. Chem. Phys., 17, 6743–6757, 2017
https://doi.org/10.5194/acp-17-6743-2017

Research article 08 Jun 2017

Research article | 08 Jun 2017

Secondary ozone peaks in the troposphere over the Himalayas

Narendra Ojha et al.

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Cited articles

Akritidis, D., Pozzer, A., Zanis, P., Tyrlis, E., Škerlak, B., Sprenger, M., and Lelieveld, J.: On the role of tropopause folds in summertime tropospheric ozone over the eastern Mediterranean and the Middle East, Atmos. Chem. Phys., 16, 14025–14039, https://doi.org/10.5194/acp-16-14025-2016, 2016.
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Bracci, A., Cristofanelli, P., Sprenger, M., Bonafè, U., Calzolari, F., Duchi, R., Laj, P., Marinoni, A., Roccato, F., Vuillermoz, E., and Bonasoni, P.: Transport of Stratospheric Air Masses to the Nepal Climate Observatory–Pyramid (Himalaya; 5079 m MSL): A Synoptic-Scale Investigation, J. Appl. Meteorol. Clim., 51, 1489–1507, https://doi.org/10.1175/JAMC-D-11-0154.1, 2012.
Chen, X. L., Ma, Y. M., Kelder, H., Su, Z., and Yang, K.: On the behaviour of the tropopause folding events over the Tibetan Plateau, Atmos. Chem. Phys., 11, 5113–5122, https://doi.org/10.5194/acp-11-5113-2011, 2011.
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Short summary
We investigate the processes, frequency of occurrence and seasonality, and effects of strongly enhanced ozone layers in the middle–upper troposphere (SOPs) over the Himalayas using a global model (EMAC). Rapid transport of stratospheric air masses is found as a key underlying process. Model predicts more frequent SOP events during the pre-monsoon. SOPs are found to significantly enhance the tropospheric ozone column over the Himalayas.
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