Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment
The ITCT-Lagrangian-2K4 (Intercontinental Transport and Chemical Transformation) experiment was conceived with an aim to quantify the effects of photochemistry and mixing on the transformation of air masses in the free troposphere away from emissions. To this end, attempts were made to intercept and...
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ftdlr:oai:elib.dlr.de:46239 2023-05-15T17:33:20+02:00 Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment Methven, J. Arnold, S. R. Stohl, A. Evans, M. J. Avery, M. Law, K. Lewis, A.C. Monks, P.S. Parrish, D.D. Reeves, C.E. Schlager, H. Atlas, E. Blake, D.R. Coe, H. Crosier, J. Flocke, F.M. Holloway, J.S. Hopkins, J.R. McQuaid, J. Purvis, R. Rappenglück, B. Singh, H.B. Watson, N.M. Whalley, L.K. Williams, P.I. 2006 http://elib.dlr.de/46239/ unknown Wiley Methven, J. und Arnold, S. R. und Stohl, A. und Evans, M. J. und Avery, M. und Law, K. und Lewis, A.C. und Monks, P.S. und Parrish, D.D. und Reeves, C.E. und Schlager, H. und Atlas, E. und Blake, D.R. und Coe, H. und Crosier, J. und Flocke, F.M. und Holloway, J.S. und Hopkins, J.R. und McQuaid, J. und Purvis, R. und Rappenglück, B. und Singh, H.B. und Watson, N.M. und Whalley, L.K. und Williams, P.I. (2006) Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment. Journal of Geophysical Research, 111, D23S62. Wiley. DOI:10.1029/2006JD007540 Atmosphärische Spurenstoffe Zeitschriftenbeitrag PeerReviewed 2006 ftdlr https://doi.org/10.1029/2006JD007540 2018-03-11T23:49:46Z The ITCT-Lagrangian-2K4 (Intercontinental Transport and Chemical Transformation) experiment was conceived with an aim to quantify the effects of photochemistry and mixing on the transformation of air masses in the free troposphere away from emissions. To this end, attempts were made to intercept and sample air masses several times during their journey across the North Atlantic using four aircraft based in New Hampshire (USA), Faial (Azores) and Creil (France). This article begins by describing forecasts from two Lagrangian models that were used to direct the aircraft into target air masses. A novel technique then identifies Lagrangian matches between flight segments. Two independent searches are conducted: for Lagrangian model matches and for pairs of whole air samples with matching hydrocarbon fingerprints. The information is filtered further by searching for matching hydrocarbon samples that are linked by matching trajectories. The quality of these ‘‘coincident matches’’ is assessed using temperature, humidity and tracer observations. The technique pulls out five clear Lagrangian cases covering a variety of situations and these are examined in detail. The matching trajectories and hydrocarbon fingerprints are shown, and the downwind minus upwind differences in tracers are discussed. Other Non-Article Part of Journal/Newspaper North Atlantic German Aerospace Center: elib - DLR electronic library Journal of Geophysical Research: Atmospheres 111 D23 |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
unknown |
topic |
Atmosphärische Spurenstoffe |
spellingShingle |
Atmosphärische Spurenstoffe Methven, J. Arnold, S. R. Stohl, A. Evans, M. J. Avery, M. Law, K. Lewis, A.C. Monks, P.S. Parrish, D.D. Reeves, C.E. Schlager, H. Atlas, E. Blake, D.R. Coe, H. Crosier, J. Flocke, F.M. Holloway, J.S. Hopkins, J.R. McQuaid, J. Purvis, R. Rappenglück, B. Singh, H.B. Watson, N.M. Whalley, L.K. Williams, P.I. Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
topic_facet |
Atmosphärische Spurenstoffe |
description |
The ITCT-Lagrangian-2K4 (Intercontinental Transport and Chemical Transformation) experiment was conceived with an aim to quantify the effects of photochemistry and mixing on the transformation of air masses in the free troposphere away from emissions. To this end, attempts were made to intercept and sample air masses several times during their journey across the North Atlantic using four aircraft based in New Hampshire (USA), Faial (Azores) and Creil (France). This article begins by describing forecasts from two Lagrangian models that were used to direct the aircraft into target air masses. A novel technique then identifies Lagrangian matches between flight segments. Two independent searches are conducted: for Lagrangian model matches and for pairs of whole air samples with matching hydrocarbon fingerprints. The information is filtered further by searching for matching hydrocarbon samples that are linked by matching trajectories. The quality of these ‘‘coincident matches’’ is assessed using temperature, humidity and tracer observations. The technique pulls out five clear Lagrangian cases covering a variety of situations and these are examined in detail. The matching trajectories and hydrocarbon fingerprints are shown, and the downwind minus upwind differences in tracers are discussed. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Methven, J. Arnold, S. R. Stohl, A. Evans, M. J. Avery, M. Law, K. Lewis, A.C. Monks, P.S. Parrish, D.D. Reeves, C.E. Schlager, H. Atlas, E. Blake, D.R. Coe, H. Crosier, J. Flocke, F.M. Holloway, J.S. Hopkins, J.R. McQuaid, J. Purvis, R. Rappenglück, B. Singh, H.B. Watson, N.M. Whalley, L.K. Williams, P.I. |
author_facet |
Methven, J. Arnold, S. R. Stohl, A. Evans, M. J. Avery, M. Law, K. Lewis, A.C. Monks, P.S. Parrish, D.D. Reeves, C.E. Schlager, H. Atlas, E. Blake, D.R. Coe, H. Crosier, J. Flocke, F.M. Holloway, J.S. Hopkins, J.R. McQuaid, J. Purvis, R. Rappenglück, B. Singh, H.B. Watson, N.M. Whalley, L.K. Williams, P.I. |
author_sort |
Methven, J. |
title |
Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
title_short |
Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
title_full |
Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
title_fullStr |
Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
title_full_unstemmed |
Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment |
title_sort |
establishing lagrangian connections between observations within air masses crossing the atlantic during the international consortium for atmospheric research on transport and transformation experiment |
publisher |
Wiley |
publishDate |
2006 |
url |
http://elib.dlr.de/46239/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Methven, J. und Arnold, S. R. und Stohl, A. und Evans, M. J. und Avery, M. und Law, K. und Lewis, A.C. und Monks, P.S. und Parrish, D.D. und Reeves, C.E. und Schlager, H. und Atlas, E. und Blake, D.R. und Coe, H. und Crosier, J. und Flocke, F.M. und Holloway, J.S. und Hopkins, J.R. und McQuaid, J. und Purvis, R. und Rappenglück, B. und Singh, H.B. und Watson, N.M. und Whalley, L.K. und Williams, P.I. (2006) Establishing Lagrangian connections between observations within air masses crossing the Atlantic during the International Consortium for Atmospheric Research on Transport and Transformation experiment. Journal of Geophysical Research, 111, D23S62. Wiley. DOI:10.1029/2006JD007540 |
op_doi |
https://doi.org/10.1029/2006JD007540 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
111 |
container_issue |
D23 |
_version_ |
1766131813762203648 |