Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources
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+, dust, and microbial load of two geographically...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5006641 2023-05-15T14:02:24+02:00 Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources Antony, R. Mahalinganathan, K. Thamban, M. Nair, S. 2011 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006641 unknown info:eu-repo/semantics/altIdentifier/doi/10.1021/es203512t https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006641 Environmental Science and Technology info:eu-repo/semantics/article 2011 ftgfzpotsdam https://doi.org/10.1021/es203512t 2022-09-14T05:57:46Z 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+, 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 ± 4 to 928 ± 21 μg L–1 in PEL and 13 ± 1 to 345 ± 6 μg L–1 in DML. TOC exhibited considerable spatial variation with significantly higher values in the coastal samples (p < 0.001), but regional variation was insignificant within the two transects beyond 100 km (p > 0.1). Both distance from the sea and elevation influenced TOC concentrations. TOC also showed a strong positive correlation with sea-salt Na+ (p < 0.001). In addition to marine contribution, in situ microorganisms accounted for 365 and 320 ng carbon L–1 in PEL and DML, respectively. Correlation with dust suggests that crustal contribution of organic carbon was marginal. Though TOC was predominantly influenced by marine sources associated with sea-spray aerosols, local microbial contributions were significant in distant locations having minimal sea-spray input. Article in Journal/Newspaper Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Princess Elizabeth Land GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic Dronning Maud Land East Antarctica Indian Princess Elizabeth Land ENVELOPE(80.367,80.367,-68.500,-68.500) Environmental Science & Technology 45 23 9944 9950 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
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+, 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 ± 4 to 928 ± 21 μg L–1 in PEL and 13 ± 1 to 345 ± 6 μg L–1 in DML. TOC exhibited considerable spatial variation with significantly higher values in the coastal samples (p < 0.001), but regional variation was insignificant within the two transects beyond 100 km (p > 0.1). Both distance from the sea and elevation influenced TOC concentrations. TOC also showed a strong positive correlation with sea-salt Na+ (p < 0.001). In addition to marine contribution, in situ microorganisms accounted for 365 and 320 ng carbon L–1 in PEL and DML, respectively. Correlation with dust suggests that crustal contribution of organic carbon was marginal. Though TOC was predominantly influenced by marine sources associated with sea-spray aerosols, local microbial contributions were significant in distant locations having minimal sea-spray input. |
format |
Article in Journal/Newspaper |
author |
Antony, R. Mahalinganathan, K. Thamban, M. Nair, S. |
spellingShingle |
Antony, R. Mahalinganathan, K. Thamban, M. Nair, S. Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
author_facet |
Antony, R. Mahalinganathan, K. Thamban, M. Nair, S. |
author_sort |
Antony, R. |
title |
Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
title_short |
Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
title_full |
Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
title_fullStr |
Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
title_full_unstemmed |
Organic Carbon in Antarctic Snow: Spatial Trends and Possible Sources |
title_sort |
organic carbon in antarctic snow: spatial trends and possible sources |
publishDate |
2011 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006641 |
long_lat |
ENVELOPE(80.367,80.367,-68.500,-68.500) |
geographic |
Antarctic Dronning Maud Land East Antarctica Indian Princess Elizabeth Land |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica Indian Princess Elizabeth Land |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Princess Elizabeth Land |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Princess Elizabeth Land |
op_source |
Environmental Science and Technology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1021/es203512t https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006641 |
op_doi |
https://doi.org/10.1021/es203512t |
container_title |
Environmental Science & Technology |
container_volume |
45 |
container_issue |
23 |
container_start_page |
9944 |
op_container_end_page |
9950 |
_version_ |
1766272659539099648 |