Secondary ozone peaks in the troposphere over the Himalayas

Ojha, Narendra; Pozzer, Andrea; Akritidis, Dimitris; Lelieveld, Jos

doi:https://doi.org/10.5194/acp-17-6743-2017

Articles | Volume 17, issue 11

https://doi.org/10.5194/acp-17-6743-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

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

https://doi.org/10.5194/acp-17-6743-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 11

Research article

|

08 Jun 2017

Research article |

| 08 Jun 2017

Secondary ozone peaks in the troposphere over the Himalayas

Narendra Ojha, Andrea Pozzer, Dimitris Akritidis, and Jos Lelieveld

Supplement

https://doi.org/10.5194/acp-17-6743-2017-supplement

Data sets

On the processes influencing the vertical distribution of ozone over the central Himalayas: Analysis of yearlong ozonesonde observations N. Ojha, M. Naja, T. Sarangi, R. Kumar, P. Bhardwaj, S. Lal, S. Venkataramani, R. Sagar, A. Kumar, and H. Chandola https://doi.org/10.1016/j.atmosenv.2014.01.031

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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.