The influence of mid-latitude cyclones on European background surface ozone

Knowland, K. Emma; Doherty, Ruth M.; Hodges, Kevin I.; Ott, Lesley E.

doi:https://doi.org/10.5194/acp-17-12421-2017

Articles | Volume 17, issue 20

https://doi.org/10.5194/acp-17-12421-2017

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

Special issue:

Global and regional assessment of intercontinental transport...

https://doi.org/10.5194/acp-17-12421-2017

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

Articles | Volume 17, issue 20

Research article

|

19 Oct 2017

Research article |

| 19 Oct 2017

The influence of mid-latitude cyclones on European background surface ozone

K. Emma Knowland, Ruth M. Doherty, Kevin I. Hodges, and Lesley E. Ott

Supplement

https://doi.org/10.5194/acp-17-12421-2017-supplement

Data sets

MERRA-2 tavg1_2d_slv_Nx: 2d, 1-Hourly, Time-Averaged, Single-Level, Assimilation, Single-Level Diagnostics V5.12.4 GMAO https://doi.org/10.5067/VJAFPLI1CSIV

MERRA-2 inst3_3d_asm_Np: 3d, 3-Hourly, Instantaneous, Pressure-Level, Assimilation, Assimilated Meteorological Fields V5.12.4 GMAO https://doi.org/10.5067/QBZ6MG944HW0

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Short summary

First study to our knowledge to quantify the influence extratropical cyclones have on the temporal variability of springtime surface ozone (O₃) measured on the west coast of Europe when cyclones are nearby. We show passing cyclones have a discernible influence on surface O₃ concentrations. In-depth findings from four case studies, using a combination of reanalyses and a modeled tracer, demonstrate there are several transport pathways before O₃-rich air eventually reaches the surface.