Data Description

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Citation:
Weller, Rolf; Wagenbach, Dietmar; Legrand, Julien; Elsässer, Christoph; Tian-Kunze, Xiangshan; König-Langlo, Gert (2011): Continuous 25-years aerosol records at coastal Antarctica: Part I. Variability and climate implications of ionic compounds. doi:10.1594/PANGAEA.756382,
Supplement to: Weller, Rolf; Wagenbach, Dietmar; Legrand, Michel R; Elsässer, Christoph; Tian-Kunze, Xiangshan; König-Langlo, Gert (2011): Continuous 25-yr aerosol records at coastal Antarctica - I: inter-annual variability of ionic compounds and links to climate indices. Tellus Series B-Chemical and Physical Meteorology, 63(5), 901-919, doi:10.1111/j.1600-0889.2011.00542.x
Abstract:
The aerosol climatology at the coastal Antarctic Neumayer Station (NM) was investigated based on continuous, 25-yr long observations of biogenic sulphur components (methanesulfonate and non-sea salt sulphate), sea salt and nitrate. Although significant long-term trends could only be detected for nitrate (-3.6 ± 2.5% per year between 1983 and 1993 and +4.0 ± 3.2% per year from 1993-2007), non-harmonic periodicities between 2 and 5 yr were typical for all species. Dedicated time series analyses revealed that relations to sea ice extent and various circulation indices are weak at best or not significant. In particular, no consistent link between sea ice extent and sea salt loadings was evident suggesting only a rather local relevance of the NM sea salt record. Nevertheless, a higher Southern Annular Mode index tended to entail a lower biogenic sulphur signal. In examining the spatial uniformity of the NM findings we contrasted them to respective 17 yr records from the coastal Dumont d'Urville Station. We found similar long-term trends for nitrate, indicating an Antarctic-wide but not identifiable atmospheric signal, although any significant impact of solar activity or pollution could be ruled out. No inter-site variability on the multiannual scale was evident for the other ionic compounds.
Project(s):
Coverage:
Latitude: -70.650000 * Longitude: -8.250000
Date/Time Start: 1983-03-01T00:00:00 * Date/Time End: 2007-12-01T00:00:00
Minimum HEIGHT above ground: 8.0 m * Maximum HEIGHT above ground: 8.0 m
Event(s):
Neumayer_SPUSO * * Latitude: -70.650000 * Longitude: -8.250000 * Date/Time: 1983-01-01T00:00:00 * Elevation: 42.0 m * Location: Dronning Maud Land, Antarctica * * Campaign: AWI_stations * * Device: Air chemistry observatory *
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DATE/TIME *Date/TimeGeocode
2Date/time end *Date/time end
3Duration, number of days *Durationdays
4HEIGHT above ground *HeightmGeocode
5Methane sulfonic acid *MSA-ng/m3Weller, Rolf *Ion chromatography *
6Chloride *Clng/m3Weller, Rolf *Ion chromatography *
7Nitrate *NO3ng/m3Weller, Rolf *Ion chromatography *
8Sulphate, non-sea-salt *nssSO4ng/m3Weller, Rolf *Ion chromatography *
9Sodium *Nang/m3Weller, Rolf *Ion chromatography *
10Station pressure *PoPoPoPohPaKönig-Langlo, Gert *Barometer *average
11Air temperature at 2 m height *T2°CKönig-Langlo, Gert *Thermometer *average
12Wind speed at 2 m height *FF2m/sKönig-Langlo, Gert *Anemometer *average
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Size:
2980 data points

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