Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics
Observed boreal fall season (September-November) 1991 surface CO data from Mace Head, Ireland, are characterized by particularly high mixing ratios, as evidenced by high means, medians, and maxima for those months, relative to the same data for boreal fall 1992. Air parcels characterized by elevated...
Published in: | Journal of Geophysical Research: Atmospheres |
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1994
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-2911 2024-02-04T10:02:39+01:00 Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics Doddridge, B. G. Dirmeyer, P. A. Merrill, J. T. Oltmans, S. J. Dickerson, R. R. 1994-01-01T08:00:00Z https://digitalcommons.uri.edu/gsofacpubs/1942 https://doi.org/10.1029/94jd02084 unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/1942 doi:10.1029/94jd02084 https://doi.org/10.1029/94jd02084 Graduate School of Oceanography Faculty Publications text 1994 ftunivrhodeislan https://doi.org/10.1029/94jd02084 2024-01-08T19:09:55Z Observed boreal fall season (September-November) 1991 surface CO data from Mace Head, Ireland, are characterized by particularly high mixing ratios, as evidenced by high means, medians, and maxima for those months, relative to the same data for boreal fall 1992. Air parcels characterized by elevated CO during fall 1991 are attributed to European sources on the basis of isentropic back trajectory analysis. There is evidence of the existence of Rossby wave links with the tropical upper troposphere over South America and the central Pacific Ocean which are responsible for the climatic forcing giving rise to the observed interannual variation in large-scale flow patterns and influencing the chemical character of air parcels reaching Mace Head. Using CO as a tracer for short-lived continental anthropogenic O3 precursors and calculating ΔO3/ΔCO for air parcel trajectories following anticyclonic paths over western Europe during the late summer and fall season of 1991, we estimate O3 production over western Europe at about 66 (40-96) billion moles of O3 per summer (~3 Tg O3 per summer), based on 1985 CO emission inventory data (37 Tg CO yr-1 for western Europe). -Authors Text North Atlantic University of Rhode Island: DigitalCommons@URI Mace ENVELOPE(155.883,155.883,-81.417,-81.417) Pacific Journal of Geophysical Research: Atmospheres 99 D11 22923 22935 |
institution |
Open Polar |
collection |
University of Rhode Island: DigitalCommons@URI |
op_collection_id |
ftunivrhodeislan |
language |
unknown |
description |
Observed boreal fall season (September-November) 1991 surface CO data from Mace Head, Ireland, are characterized by particularly high mixing ratios, as evidenced by high means, medians, and maxima for those months, relative to the same data for boreal fall 1992. Air parcels characterized by elevated CO during fall 1991 are attributed to European sources on the basis of isentropic back trajectory analysis. There is evidence of the existence of Rossby wave links with the tropical upper troposphere over South America and the central Pacific Ocean which are responsible for the climatic forcing giving rise to the observed interannual variation in large-scale flow patterns and influencing the chemical character of air parcels reaching Mace Head. Using CO as a tracer for short-lived continental anthropogenic O3 precursors and calculating ΔO3/ΔCO for air parcel trajectories following anticyclonic paths over western Europe during the late summer and fall season of 1991, we estimate O3 production over western Europe at about 66 (40-96) billion moles of O3 per summer (~3 Tg O3 per summer), based on 1985 CO emission inventory data (37 Tg CO yr-1 for western Europe). -Authors |
format |
Text |
author |
Doddridge, B. G. Dirmeyer, P. A. Merrill, J. T. Oltmans, S. J. Dickerson, R. R. |
spellingShingle |
Doddridge, B. G. Dirmeyer, P. A. Merrill, J. T. Oltmans, S. J. Dickerson, R. R. Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
author_facet |
Doddridge, B. G. Dirmeyer, P. A. Merrill, J. T. Oltmans, S. J. Dickerson, R. R. |
author_sort |
Doddridge, B. G. |
title |
Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
title_short |
Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
title_full |
Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
title_fullStr |
Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
title_full_unstemmed |
Interannual variability over the eastern North Atlantic Ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
title_sort |
interannual variability over the eastern north atlantic ocean: chemical and meteorological evidence for tropical influence on regional-scale transport in the extratropics |
publisher |
DigitalCommons@URI |
publishDate |
1994 |
url |
https://digitalcommons.uri.edu/gsofacpubs/1942 https://doi.org/10.1029/94jd02084 |
long_lat |
ENVELOPE(155.883,155.883,-81.417,-81.417) |
geographic |
Mace Pacific |
geographic_facet |
Mace Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/1942 doi:10.1029/94jd02084 https://doi.org/10.1029/94jd02084 |
op_doi |
https://doi.org/10.1029/94jd02084 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
99 |
container_issue |
D11 |
container_start_page |
22923 |
op_container_end_page |
22935 |
_version_ |
1789969489883824128 |