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| Titel |
The North Atlantic Marine Boundary Layer Experiment(NAMBLEX). Overview of the campaign held at Mace Head, Ireland, in summer 2002 |
| VerfasserIn |
D. E. Heard, K. A. Read, J. Methven, S. Al-Haider, W. J. Bloss, G. P. Johnson, M. J. Pilling, P. W. Seakins, S. C. Smith, R. Sommariva, J. C. Stanton, T. J. Still, T. Ingham, B. Brooks, G. Leeuw, A. V. Jackson, J. B. McQuaid, R. Morgan, M. H. Smith, L. J. Carpenter, N. Carslaw, J. Hamilton, J. R. Hopkins, J. D. Lee, A. C. Lewis, R. M. Purvis, D. J. Wevill, N. Brough, T. Green, G. Mills, S. A. Penkett, J. M. C. Plane, A. Saiz-Lopez, D. Worton, P. S. Monks, Z. Fleming, A. R. Rickard, M. R. Alfarra, J. D. Allan, K. Bower, H. Coe, M. Cubison, M. Flynn, G. McFiggans, M. Gallagher, E. G. Norton, C. D. O'Dowd, J. Shillito, D. Topping, G. Vaughan, P. Williams, M. Bitter, S. M. Ball, R. L. Jones, I. M. Povey, S. O'Doherty, P. G. Simmonds, A. Allen, R. P. Kinnersley, D. C. S. Beddows, M. Dall'Osto, R. M. Harrison, R. J. Donovan, M. R. Heal, S. G. Jennings, C. Noone, G. Spain |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 6, no. 8 ; Nr. 6, no. 8 (2006-06-21), S.2241-2272 |
| Datensatznummer |
250003930
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| Publikation (Nr.) |
 copernicus.org/acp-6-2241-2006.pdf |
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| Zusammenfassung |
| The North Atlantic Marine Boundary Layer Experiment (NAMBLEX),
involving over 50 scientists from 12 institutions, took place at
Mace Head, Ireland (53.32° N, 9.90° W), between 23
July and 4 September 2002. A wide range of state-of-the-art
instrumentation enabled detailed measurements of the boundary layer
structure and atmospheric composition in the gas and aerosol phase
to be made, providing one of the most comprehensive in situ studies
of the marine boundary layer to date. This overview paper describes
the aims of the NAMBLEX project in the context of previous field
campaigns in the Marine Boundary Layer (MBL), the overall layout of
the site, a summary of the instrumentation deployed, the temporal
coverage of the measurement data, and the numerical models used to
interpret the field data. Measurements of some trace species were
made for the first time during the campaign, which was characterised
by predominantly clean air of marine origin, but more polluted air
with higher levels of NOx originating from continental
regions was also experienced. This paper provides a summary of the
meteorological measurements and Planetary Boundary Layer (PBL)
structure measurements, presents time series of some of the
longer-lived trace species (O3, CO, H2, DMS, CH4,
NMHC, NOx, NOy, PAN) and summarises measurements
of other species that are described in more detail in other papers
within this special issue, namely oxygenated VOCs, HCHO, peroxides,
organo-halogenated species, a range of shorter lived halogen species
(I2, OIO, IO, BrO), NO3 radicals, photolysis frequencies,
the free radicals OH, HO2 and (HO2+Σ RO2), as
well as a summary of the aerosol measurements. NAMBLEX was supported
by measurements made in the vicinity of Mace Head using the NERC
Dornier-228 aircraft. Using ECMWF wind-fields, calculations were
made of the air-mass trajectories arriving at Mace Head during
NAMBLEX, and were analysed together with both meteorological and
trace-gas measurements. In this paper a chemical climatology for the
duration of the campaign is presented to interpret the distribution
of air-mass origins and emission sources, and to provide a
convenient framework of air-mass classification that is used by
other papers in this issue for the interpretation of observed
variability in levels of trace gases and aerosols. |
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