Year-round chemical aerosol records in continental Antarctica obtained by automatic samplings

Aimed at year-round recording of the chemical aerosol composition in central Antarctica, an unattended operating aerosol sampler was successfully deployed at the EPICA deep drilling site in Dronning Maud Land (Kohnen Station). Analyses of teflon/nylon filter packs consecutively collected over bi-wee...

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Published in:Tellus. Series B, Chemical and physical meteorology Chemical and physical meteorology, 2007-09, Vol.59 (4), p.755-765
Main Authors: Weller, Rolf, Wagenbach, Dietmar
Format: Article
Language:English
Subjects:
Aerosols
Antarctica
Chemical composition and interactions. Ionic interactions and processes
Concentration (composition)
Earth, ocean, space
Exact sciences and technology
External geophysics
Marine
Maxima
Meteorology
Particles and aerosols
Sampling
Stations
Sulfur
Sulphur
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cited_by cdi_FETCH-LOGICAL-c5163-1e0b0a29d2ad5bf6e1f7de7defe8375dab7f0a358f9082c6cd2c4b0bf122a6073
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creator Weller, Rolf
Wagenbach, Dietmar
description Aimed at year-round recording of the chemical aerosol composition in central Antarctica, an unattended operating aerosol sampler was successfully deployed at the EPICA deep drilling site in Dronning Maud Land (Kohnen Station). Analyses of teflon/nylon filter packs consecutively collected over bi-weekly intervals during the February 2003 to December 2005 period allowed to evaluate seasonal concentration variations of methane sulphonate (MS), Cl - , NO 3 - , non-sea salt (nss-)SO 4 2- and Na + , while NH 4 + and mineral dust related ion results remained below detection limits. For MS and nss-SO 4 2- distinct late summer maxima around 44 and 200 ng m -3 , respectively, were found, while (total) NO 3 - showed a broad November maximum of about 52 ng m -3 . In contrast, the highest concentrations of Na + with peak values of up to 160 ng m -3 were observed during the winter half year. The seasonality of these species broadly coincided with long-term observations at the coastal Neumayer Station, including surprisingly comparable NO 3 - levels. However, the biogenic sulphur and sea salt concentrations were lower at Kohnen by typically a factor of 2-3 and 10, respectively. The arrival of sea ice derived sea salt particles at Kohnen could not clearly detected, since even during mid-winter the nss-SO 4 2- to Na + ratio was generally too high to unambiguously identify a sulphur depleted sea salt SO 4 2- fraction.
doi_str_mv 10.1111/j.1600-0889.2007.00293.x
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subjects Aerosols
Antarctica
Chemical composition and interactions. Ionic interactions and processes
Concentration (composition)
Earth, ocean, space
Exact sciences and technology
External geophysics
Marine
Maxima
Meteorology
Particles and aerosols
Sampling
Stations
Sulfur
Sulphur
title Year-round chemical aerosol records in continental Antarctica obtained by automatic samplings
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