The dynamical impact of Rossby wave breaking upon UK PM 10 concentration
Coarse particulate matter (PM 10 ) has long been understood to be hazardous to human health, with mortality rates increasing as a result of raised ground level concentrations. We explore the influence of synoptic-scale meteorology on daily mean observed PM 10 concentration ([PM 10 ]) using Rossby wa...
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ftdoajarticles:oai:doaj.org/article:8c3a2731e4fd4d70b8b921aee68db4db 2023-05-15T17:41:35+02:00 The dynamical impact of Rossby wave breaking upon UK PM 10 concentration C. P. Webber H. F. Dacre W. J. Collins G. Masato 2017-01-01T00:00:00Z https://doi.org/10.5194/acp-17-867-2017 https://doaj.org/article/8c3a2731e4fd4d70b8b921aee68db4db EN eng Copernicus Publications http://www.atmos-chem-phys.net/17/867/2017/acp-17-867-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-17-867-2017 https://doaj.org/article/8c3a2731e4fd4d70b8b921aee68db4db Atmospheric Chemistry and Physics, Vol 17, Iss 2, Pp 867-881 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-867-2017 2022-12-31T06:29:59Z Coarse particulate matter (PM 10 ) has long been understood to be hazardous to human health, with mortality rates increasing as a result of raised ground level concentrations. We explore the influence of synoptic-scale meteorology on daily mean observed PM 10 concentration ([PM 10 ]) using Rossby wave breaking (RWB). Meteorological reanalysis data for the winter months (DJF) between January 1999 and December 2008 and observed PM 10 data for three urban background UK (Midland) sites were analysed. Three RWB diagnostics were used to identify RWB that had significant influence on UK Midland PM 10 . RWB events were classified according to whether the RWB was cyclonic or anticyclonic in its direction of breaking and whether the RWB event was influenced more by poleward or equatorial air masses. We find that there is a strong link between RWB events and UK [PM 10 ]. Significant increases ( p < 0.01) in UK [PM 10 ] were seen 1 day following RWB occurring in spatially constrained northeast Atlantic–European regions. Analysis into episodic PM 10 exceedance events shows increased probability of [PM 10 ] exceedance associated with all RWB subsets. The greatest probability of exceeding the UK [PM 10 ] threshold was associated with cyclonic RWB preceded by anticyclonic RWB forming an Ω block synoptic pattern. This mechanism suggests an easterly advection of European PM 10 followed by prolonged stagnant conditions within the UK and led to an almost threefold increase in the probability of the UK Midlands exceeding a hazardous [PM 10 ] threshold (0.383), when compared to days where no RWB was detected (0.129). Article in Journal/Newspaper Northeast Atlantic Directory of Open Access Journals: DOAJ Articles Midland ENVELOPE(8.224,8.224,63.072,63.072) Atmospheric Chemistry and Physics 17 2 867 881 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 C. P. Webber H. F. Dacre W. J. Collins G. Masato The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Coarse particulate matter (PM 10 ) has long been understood to be hazardous to human health, with mortality rates increasing as a result of raised ground level concentrations. We explore the influence of synoptic-scale meteorology on daily mean observed PM 10 concentration ([PM 10 ]) using Rossby wave breaking (RWB). Meteorological reanalysis data for the winter months (DJF) between January 1999 and December 2008 and observed PM 10 data for three urban background UK (Midland) sites were analysed. Three RWB diagnostics were used to identify RWB that had significant influence on UK Midland PM 10 . RWB events were classified according to whether the RWB was cyclonic or anticyclonic in its direction of breaking and whether the RWB event was influenced more by poleward or equatorial air masses. We find that there is a strong link between RWB events and UK [PM 10 ]. Significant increases ( p < 0.01) in UK [PM 10 ] were seen 1 day following RWB occurring in spatially constrained northeast Atlantic–European regions. Analysis into episodic PM 10 exceedance events shows increased probability of [PM 10 ] exceedance associated with all RWB subsets. The greatest probability of exceeding the UK [PM 10 ] threshold was associated with cyclonic RWB preceded by anticyclonic RWB forming an Ω block synoptic pattern. This mechanism suggests an easterly advection of European PM 10 followed by prolonged stagnant conditions within the UK and led to an almost threefold increase in the probability of the UK Midlands exceeding a hazardous [PM 10 ] threshold (0.383), when compared to days where no RWB was detected (0.129). |
format |
Article in Journal/Newspaper |
author |
C. P. Webber H. F. Dacre W. J. Collins G. Masato |
author_facet |
C. P. Webber H. F. Dacre W. J. Collins G. Masato |
author_sort |
C. P. Webber |
title |
The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
title_short |
The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
title_full |
The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
title_fullStr |
The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
title_full_unstemmed |
The dynamical impact of Rossby wave breaking upon UK PM 10 concentration |
title_sort |
dynamical impact of rossby wave breaking upon uk pm 10 concentration |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-867-2017 https://doaj.org/article/8c3a2731e4fd4d70b8b921aee68db4db |
long_lat |
ENVELOPE(8.224,8.224,63.072,63.072) |
geographic |
Midland |
geographic_facet |
Midland |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Iss 2, Pp 867-881 (2017) |
op_relation |
http://www.atmos-chem-phys.net/17/867/2017/acp-17-867-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-17-867-2017 https://doaj.org/article/8c3a2731e4fd4d70b8b921aee68db4db |
op_doi |
https://doi.org/10.5194/acp-17-867-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
2 |
container_start_page |
867 |
op_container_end_page |
881 |
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