The influence of synoptic weather regimes on UK air quality: analysis of satellite column NO2

R. J. Pope, N. H. Savage, M. P. Chipperfield, S. R. Arnold, T. J. Osborn

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Abstract

Groupings of Lamb weather types (LWTs) are used to assess the influence of synoptic meteorology on UK tropospheric column NO2. Composite satellite maps using daily 2005–2011 data show significant NO2 anomalies for each group. Hence, despite large day-to-day variability and significant uncertainty in individual retrievals, the satellite data can be used to determine national-scale column NO2 variations under different meteorological conditions. Under cyclonic conditions, NO2 is reduced, while anticyclonic conditions aid its accumulation, especially during winter, consistent with trapping of surface emissions and slower photochemical processing. This composite dataset can be used to test seasonal simulations of air quality models.
Original languageEnglish
Pages (from-to)211–217
Number of pages7
JournalAtmospheric Science Letters
Volume15
Issue number3
Early online date6 Mar 2014
DOIs
Publication statusPublished - 2014

Keywords

  • Lamb weather type
  • OMI NO2
  • air quality

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