Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites
Increasing reactive nitrogen (Nr) deposition in the Arctic may adversely impact N-limited ecosystems. To investigate atmospheric transport of Nr to Svalbard, Norwegian Arctic, snow and firn samples were collected from glaciers and analysed to define spatial and temporal variations (1–10 years) in ma...
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Norwegian Polar Institute
2015
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ftdoajarticles:oai:doaj.org/article:90f3afb1c7a74a2db0a361c8da1f62b0 2023-05-15T14:51:42+02:00 Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites Carmen P. Vega Mats P. Björkman Veijo A. Pohjola Elisabeth Isaksson Rickard Pettersson Tõnu Martma Alina Marca Jan Kaiser 2015-04-01T00:00:00Z https://doi.org/10.3402/polar.v34.23246 https://doaj.org/article/90f3afb1c7a74a2db0a361c8da1f62b0 EN eng Norwegian Polar Institute http://www.polarresearch.net/index.php/polar/article/view/23246/pdf_11 https://doaj.org/toc/1751-8369 1751-8369 doi:10.3402/polar.v34.23246 https://doaj.org/article/90f3afb1c7a74a2db0a361c8da1f62b0 Polar Research, Vol 34, Iss 0, Pp 1-19 (2015) Nitrate isotopes ice cores Svalbard pollutants Environmental sciences GE1-350 Oceanography GC1-1581 article 2015 ftdoajarticles https://doi.org/10.3402/polar.v34.23246 2022-12-30T23:50:16Z Increasing reactive nitrogen (Nr) deposition in the Arctic may adversely impact N-limited ecosystems. To investigate atmospheric transport of Nr to Svalbard, Norwegian Arctic, snow and firn samples were collected from glaciers and analysed to define spatial and temporal variations (1–10 years) in major ion concentrations and the stable isotope composition (δ15N and δ18O) of nitrate (NO3-) across the archipelago. The δ15N NO3- and δ18ONO3- averaged −4‰ and 67‰ in seasonal snow (2010–11) and −9‰ and 74‰ in firn accumulated over the decade 2001–2011. East–west zonal gradients were observed across the archipelago for some major ions (non-sea salt sulphate and magnesium) and also for δ15NNO3- and δ18ONO3- in snow, which suggests a different origin for air masses arriving in different sectors of Svalbard. We propose that snowfall associated with long-distance air mass transport over the Arctic Ocean inherits relatively low δ15NNO3- due to in-transport N isotope fractionation. In contrast, faster air mass transport from the north-west Atlantic or northern Europe results in snowfall with higher δ15NNO3- because in-transport fractionation of N is then time-limited. Article in Journal/Newspaper Arctic Arctic Ocean North West Atlantic Polar Research Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Svalbard Polar Research 34 1 23246 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Nitrate isotopes ice cores Svalbard pollutants Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
Nitrate isotopes ice cores Svalbard pollutants Environmental sciences GE1-350 Oceanography GC1-1581 Carmen P. Vega Mats P. Björkman Veijo A. Pohjola Elisabeth Isaksson Rickard Pettersson Tõnu Martma Alina Marca Jan Kaiser Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
topic_facet |
Nitrate isotopes ice cores Svalbard pollutants Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
Increasing reactive nitrogen (Nr) deposition in the Arctic may adversely impact N-limited ecosystems. To investigate atmospheric transport of Nr to Svalbard, Norwegian Arctic, snow and firn samples were collected from glaciers and analysed to define spatial and temporal variations (1–10 years) in major ion concentrations and the stable isotope composition (δ15N and δ18O) of nitrate (NO3-) across the archipelago. The δ15N NO3- and δ18ONO3- averaged −4‰ and 67‰ in seasonal snow (2010–11) and −9‰ and 74‰ in firn accumulated over the decade 2001–2011. East–west zonal gradients were observed across the archipelago for some major ions (non-sea salt sulphate and magnesium) and also for δ15NNO3- and δ18ONO3- in snow, which suggests a different origin for air masses arriving in different sectors of Svalbard. We propose that snowfall associated with long-distance air mass transport over the Arctic Ocean inherits relatively low δ15NNO3- due to in-transport N isotope fractionation. In contrast, faster air mass transport from the north-west Atlantic or northern Europe results in snowfall with higher δ15NNO3- because in-transport fractionation of N is then time-limited. |
format |
Article in Journal/Newspaper |
author |
Carmen P. Vega Mats P. Björkman Veijo A. Pohjola Elisabeth Isaksson Rickard Pettersson Tõnu Martma Alina Marca Jan Kaiser |
author_facet |
Carmen P. Vega Mats P. Björkman Veijo A. Pohjola Elisabeth Isaksson Rickard Pettersson Tõnu Martma Alina Marca Jan Kaiser |
author_sort |
Carmen P. Vega |
title |
Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
title_short |
Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
title_full |
Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
title_fullStr |
Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
title_full_unstemmed |
Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites |
title_sort |
nitrate stable isotopes and major ions in snow and ice samples from four svalbard sites |
publisher |
Norwegian Polar Institute |
publishDate |
2015 |
url |
https://doi.org/10.3402/polar.v34.23246 https://doaj.org/article/90f3afb1c7a74a2db0a361c8da1f62b0 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean North West Atlantic Polar Research Svalbard |
genre_facet |
Arctic Arctic Ocean North West Atlantic Polar Research Svalbard |
op_source |
Polar Research, Vol 34, Iss 0, Pp 1-19 (2015) |
op_relation |
http://www.polarresearch.net/index.php/polar/article/view/23246/pdf_11 https://doaj.org/toc/1751-8369 1751-8369 doi:10.3402/polar.v34.23246 https://doaj.org/article/90f3afb1c7a74a2db0a361c8da1f62b0 |
op_doi |
https://doi.org/10.3402/polar.v34.23246 |
container_title |
Polar Research |
container_volume |
34 |
container_issue |
1 |
container_start_page |
23246 |
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1766322821765529600 |