The influence of UV irradiation on the photoreduction of iron in the Southern Ocean
An iron enrichment experiment, EisenEx, was performed in the Atlantic sector of the Southern Ocean during the Antarctic spring of 2000. Deck incubations of open ocean water were performed to investigate the influence of ultraviolet B (UVB: 280-315 nm) and ultraviolet A (UVA: 315-400 nm) on the speci...
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2005
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ftsouthampton:oai:eprints.soton.ac.uk:41430 2023-07-30T03:58:04+02:00 The influence of UV irradiation on the photoreduction of iron in the Southern Ocean Rijkenberg, M.J.A. Fischer, A.C. Kroon, J.J. Gerringa, L.J.A. Timmermans, K.R. Wolterbeek, H.Th. de Baar, H.J.W. 2005 https://eprints.soton.ac.uk/41430/ unknown Rijkenberg, M.J.A., Fischer, A.C., Kroon, J.J., Gerringa, L.J.A., Timmermans, K.R., Wolterbeek, H.Th. and de Baar, H.J.W. (2005) The influence of UV irradiation on the photoreduction of iron in the Southern Ocean. Marine Chemistry, 93 (2-4), 119-129. (doi:10.1016/j.marchem.2004.03.021 <http://dx.doi.org/10.1016/j.marchem.2004.03.021>). Article PeerReviewed 2005 ftsouthampton https://doi.org/10.1016/j.marchem.2004.03.021 2023-07-09T20:49:07Z An iron enrichment experiment, EisenEx, was performed in the Atlantic sector of the Southern Ocean during the Antarctic spring of 2000. Deck incubations of open ocean water were performed to investigate the influence of ultraviolet B (UVB: 280-315 nm) and ultraviolet A (UVA: 315-400 nm) on the speciation of iron in seawater, using an addition of the radioisotopes Fe-59(III) (1.25 nM) or Fe-55(III) (0.5 nM). Seawater was sampled inside and outside the iron-enriched region. The radioisotopic Fe(II) concentration was monitored during daylight under three different light conditions: the full solar spectrum (total), total minus UVB, and total minus UVB+UVA. A distinct diel cycle was observed with a clear distinction between the three different light regimes. A clear linear relationship was found for the concentration of radioisotopic Fe(II) versus irradiance. UVB produced most of the Fe(II) followed by UVA and visible light (VIS: 400-700 nm), respectively. UVB produced 4.89 and 0.69 pM m(2) W-1 radioisotopic Fe(II) followed by UVA with 0.33 and 0.10 pM M-2 W-1 radioisotopic Fe(II) and VIS with 0.04 and 0.03 pM m(2) W-1 radioisotopic Fe(II). Article in Journal/Newspaper Antarc* Antarctic Southern Ocean University of Southampton: e-Prints Soton Antarctic Southern Ocean The Antarctic Marine Chemistry 93 2-4 119 129 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
unknown |
description |
An iron enrichment experiment, EisenEx, was performed in the Atlantic sector of the Southern Ocean during the Antarctic spring of 2000. Deck incubations of open ocean water were performed to investigate the influence of ultraviolet B (UVB: 280-315 nm) and ultraviolet A (UVA: 315-400 nm) on the speciation of iron in seawater, using an addition of the radioisotopes Fe-59(III) (1.25 nM) or Fe-55(III) (0.5 nM). Seawater was sampled inside and outside the iron-enriched region. The radioisotopic Fe(II) concentration was monitored during daylight under three different light conditions: the full solar spectrum (total), total minus UVB, and total minus UVB+UVA. A distinct diel cycle was observed with a clear distinction between the three different light regimes. A clear linear relationship was found for the concentration of radioisotopic Fe(II) versus irradiance. UVB produced most of the Fe(II) followed by UVA and visible light (VIS: 400-700 nm), respectively. UVB produced 4.89 and 0.69 pM m(2) W-1 radioisotopic Fe(II) followed by UVA with 0.33 and 0.10 pM M-2 W-1 radioisotopic Fe(II) and VIS with 0.04 and 0.03 pM m(2) W-1 radioisotopic Fe(II). |
format |
Article in Journal/Newspaper |
author |
Rijkenberg, M.J.A. Fischer, A.C. Kroon, J.J. Gerringa, L.J.A. Timmermans, K.R. Wolterbeek, H.Th. de Baar, H.J.W. |
spellingShingle |
Rijkenberg, M.J.A. Fischer, A.C. Kroon, J.J. Gerringa, L.J.A. Timmermans, K.R. Wolterbeek, H.Th. de Baar, H.J.W. The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
author_facet |
Rijkenberg, M.J.A. Fischer, A.C. Kroon, J.J. Gerringa, L.J.A. Timmermans, K.R. Wolterbeek, H.Th. de Baar, H.J.W. |
author_sort |
Rijkenberg, M.J.A. |
title |
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
title_short |
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
title_full |
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
title_fullStr |
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
title_full_unstemmed |
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean |
title_sort |
influence of uv irradiation on the photoreduction of iron in the southern ocean |
publishDate |
2005 |
url |
https://eprints.soton.ac.uk/41430/ |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
Rijkenberg, M.J.A., Fischer, A.C., Kroon, J.J., Gerringa, L.J.A., Timmermans, K.R., Wolterbeek, H.Th. and de Baar, H.J.W. (2005) The influence of UV irradiation on the photoreduction of iron in the Southern Ocean. Marine Chemistry, 93 (2-4), 119-129. (doi:10.1016/j.marchem.2004.03.021 <http://dx.doi.org/10.1016/j.marchem.2004.03.021>). |
op_doi |
https://doi.org/10.1016/j.marchem.2004.03.021 |
container_title |
Marine Chemistry |
container_volume |
93 |
container_issue |
2-4 |
container_start_page |
119 |
op_container_end_page |
129 |
_version_ |
1772820975480471552 |