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

Data sets

MERRA-2 tavg1_2d_slv_Nx: 2d, 1-Hourly, Time-Averaged, Single-Level, Assimilation, Single-Level Diagnostics V5.12.4 GMAO

MERRA-2 inst3_3d_asm_Np: 3d, 3-Hourly, Instantaneous, Pressure-Level, Assimilation, Assimilated Meteorological Fields V5.12.4 GMAO

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.
Final-revised paper