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| Titel |
A meteorological overview of the ARCTAS 2008 mission |
| VerfasserIn |
H. E. Fuelberg, D. L. Harrigan, W. Sessions |
| 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 ; 10, no. 2 ; Nr. 10, no. 2 (2010-01-26), S.817-842 |
| Datensatznummer |
250007977
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| Publikation (Nr.) |
 copernicus.org/acp-10-817-2010.pdf |
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| Zusammenfassung |
| The Arctic Research of the Composition
of the Troposphere from Aircraft and
Satellites (ARCTAS) mission was a multi-aircraft project whose
major objective was to investigate the factors driving changes in the
Arctic's atmospheric composition and climate. It was conducted during April
and June–July 2008. The summer ARCTAS deployment was preceded by a week of
flights over and around California to address state issues of air quality
and climate forcing. This paper focuses on meteorological conditions during
the ARCTAS Spring and Summer campaigns. We examine mission averaged
large-scale flow patterns at the surface, 500 hPa, and 300 hPa and determine
their departures from climatology. Results from runs of the Weather
Research and Forecasting (WRF) model are
used to describe meteorological conditions on individual days. Our WRF
configuration included a nested grid approach that provided horizontal
spacing as small as 5 km. Trajectories calculated from the WRF output are
used to determine transport pathways to the Arctic, including their origins
and the altitudes at which they reach 70° N. We also present backward
trajectories from selected legs of individual ARCTAS flights. Finally, the
FLEXPART Lagrangian particle dispersion model, with the high resolution WRF
data as input, is used to determine the paths of anthropogenic and biomass
burning-derived CO. Results show that there was frequent and widespread
transport to the Arctic during both phases of ARCTAS and that the three
ARCTAS aircraft sampled air having a multitude of origins, following a
myriad of paths, and experiencing many types of meteorological conditions. |
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