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Organic carbon in Antarctic snow: spatial trends and possible sources

DRS at CSIR-National Institute of Oceanography

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Title Organic carbon in Antarctic snow: spatial trends and possible sources
 
Creator Antony, R.
Mahalinganathan, K.
Thamban, M.
Nair, S.
 
Subject organic carbon
snow
spatial variations
microorganisms
 
Description Organic carbon records in Antarctic snow are sparse despite the fact that it is of great significance to global carbon dynamics, snow photochemistry, and air–snow exchange processes. Here, surface snow total organic carbon (TOC) along with sea-salt Na sup(+), dust, and microbial load of two geographically distinct traverses in East Antarctica are presented, viz. Princess Elizabeth Land (PEL, coast to 180 km inland, Indian Ocean sector) and Dronning Maud Land (DML, 110–300 km inland, Atlantic Ocean sector). TOC ranged from 88 + or -4 to 928 + or -21 mu g L sup(-1) in PEL and 13 + or -1 to 345 + or -6 mu g L sup(-1) in DML. TOC exhibited considerable spatial variation with significantly higher values in the coastal samples (p0.1). Both distance from the sea and elevation influenced TOC concentrations. TOC also showed a strong positive correlation with sea-salt Na sup(+) (p
 
Date 2012-01-03T04:56:34Z
2012-01-03T04:56:34Z
2011
 
Type Journal Article
 
Identifier Environmental Science & Technology, vol.45; 2011; 9944–9950
http://drs.nio.org/drs/handle/2264/3984
 
Language en
 
Rights © 2011 American Chemical Society
 
Publisher American Chemical Society