Spatial variations of surface snow chemistry during two austral summers in western Dronning Maud Land, Antarctica

Kärkäs, Eija; Teinilä, Kimmo; Virkkula, Aki; Aurela, Minna

doi:10.1016/j.atmosenv.2004.11.027

Cited by 30 publications

(21 citation statements)

References 43 publications

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“…almost exponential decrease with inland distance and altitude. Similar trends were noted for the majority of coast to inland traverses (Kreutz and Mayewsky, 1999;Bertler et al, 2005;Kärkäs et al, 2005;Dixon et al, 2013). It should be noted that, unlike Na, Mg shows decreasing trend only at the beginning of the traverse (between 55 and 519 km or from 1200 to 3100 m a.s.l.).…”

Section: Discussionsupporting

confidence: 52%

“…The Antarctic surface snow chemistry was previously studied along the traverses from coast to inland (Legrand and Delmas, 1985;Kreutz and Mayewsky, 1999;Bertler et al, 2005;Kärkäs et al, 2005;Dixon et al, 2013). In particular, concentrations of dissolved snow components (major ions) were studied versus such physical parameters as distance, elevation and accumulation rate along the traverses (Cincinelli et al, 2001;Udisti et al, 2004;Bertler et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…A negative correlation between sea salt Published by Copernicus Publications on behalf of the European Geosciences Union. ion concentration and the distance from the sea was established (Legrand and Delmas, 1985;Kreutz and Mayewsky, 1999;Kärkäs et al, 2005). Ratios of snow ion concentrations to their concentration in the bulk sea water were used to determine sea or non-sea sources of aerosols (Aristarain and Delmas, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

et al. 2014

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Abstract. In January of 2008, during the 53rd Russian Antarctic Expedition, surface snow samples were taken from 13 shallow (0.7 to 1.5 m depth) snow pits along the first tractor traverse from Progress to Vostok stations, East Antarctica. Sub-surface snow/firn layers are dated from 2.1 to 18 yr. The total length of the coast to inland traverse is more than 1280 km. Here we analysed spatial variability of concentrations of sulphate ions and elements and their fluxes in the snow deposited within the 2006-2008 time interval. Anions were analysed by high-performance liquid chromatography (HPLC), and the determination of selected metals, including Na, K, Mg, Ca and Al, was carried out by mass spectroscopy with atomization by induced coupled plasma (ICP-MS). Surface snow concentration records were examined for trends versus distance inland, elevation, accumulation rate and slope gradient. Na shows a significant positive correlation with accumulation rate, which decreases as distance from the sea and altitude increase. K, Ca and Mg concentrations do not show any significant relationship either with distance inland or with elevation. Maximal concentrations of these elements with a prominent Al peak are revealed in the middle part of the traverse (500-600 km from the coast). Analysis of element correlations and atmospheric circulation patterns allow us to suggest their terrestrial origin (e.g. aluminosilicates carried as a continental dust) from the Antarctic nunatak areas. Sulphate concentrations show no significant relationship with distance inland, elevation, slope gradient and accumulation rate. Non-sea salt secondary sulphate is the most important contribution to the total sulphate budget along the traverse. Sulphate of volcanic origin attributed to the Pinatubo eruption (1991) was revealed in the snow pit at 1276 km (depth 120-130 cm).

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Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

et al. 2014

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“…was 3.88 ± 1.45 μS cm -1 (in this study, standard deviation is used for range estimates), with a maximum at the bottom layer (recognized as superimposed ice) and the minimum found in the upper snow layers ( Virkkunen et al (2007), showed distinct variability among the layers. The concentrations of Na + and Cl -were closely linked ( /Na + ratios for the snowpack were up to three times greater than average ocean Kärkäs et al (2005) using an ocean SO 4 2-/Na + ratio of 0.252 (Millero et al, 2008), gave some results close to zero or slightly negative (negative values are not presented in Fig. 3) , and the melt index was found and the same is true for pH (Table 2) , the melt index, and pH were negatively correlated with σ cond.…”

Section: Snowpack Stratigraphymentioning

confidence: 98%

Microbial Cell Retention in a Melting High Arctic Snowpack, Svalbard

Björkman

Žárský

Kühnel

et al. 2014

Arctic, Antarctic, and Alpine Research

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“…Such spatial and temporal variability is influenced by factors like accumulation rates, elevation and the relative distance from sea Becagli et al 2004;Benassai et al 2005). Several studies using snow and ice records have confirmed that the concentration of Na + and Clare directly related to the proximity of the sea Karkäs et al 2005).…”

Section: Temporal Variations In Sea Salt Components and Its Fractionamentioning

confidence: 99%

Reconstruction of Antarctic Climate Change Using Ice Core Proxy Records from the Coastal Dronning Maud Land, East Antarctica

Thamban

Laluraj

Naik

et al. 2011

Journal of the Geological Society of India

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Antarctic ice core records have provided unprecedented information on past climatic changes and forcing factors on decadal to millennial timescales. The glaciochemical and stable isotope records of a shallow ice core from the coastal Dronning Maud Land (East Antarctica) were used here to reconstruct the coastal Antarctic environmental variability during the past ~470 years. Sea salt ion data indicate a significant additional contribution of chloride ions compared to sea water values, possibly through atmospheric scavenging. The nitrate (NO 3 -) profile exhibit significant temporal shifts than that of the sulphate (SO 4 2-), with a major shift around 1750 AD. The changes in NO 3 record are synchronous with the proxy record of solar activity ( 10 Be profile from a South Pole ice core), suggesting enhanced NO 3 values during periods of reduced solar activity like the Dalton Minimum (~1790-1830 AD) and Maunder Minimum (~1640-1710 AD). The G 18 O records reveal that the more negative G 18 O values were coeval with several events of increased NO 3 concentrations, suggesting enhanced preservation of NO 3 during periods of reduced air temperatures. The G 18 O and GD records of the core also suggest significant short-term and long-tem variability with more negative values indicating relatively lower air temperatures prior to 1715 AD. The G 18 O records also revealed a significant warming of 2.7°C for the past 470 years, with a warming of ~0.6°C per century.

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Spatial variations of surface snow chemistry during two austral summers in western Dronning Maud Land, Antarctica

Cited by 30 publications

References 43 publications

Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

Microbial Cell Retention in a Melting High Arctic Snowpack, Svalbard

Reconstruction of Antarctic Climate Change Using Ice Core Proxy Records from the Coastal Dronning Maud Land, East Antarctica

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