Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter
Local climates in the Northern and Southern Hemisphere are influenced by Arctic Amplification and by interactions of the Antarctic ozone hole with climate change, respectively. Polar changes may affect hydroclimatic conditions in temperate regions, for example, by increasing the length and intensity...
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2016
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Online Access: | https://doi.org/10.1021/acs.est.5b05994 http://infoscience.epfl.ch/record/218206 |
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ftinfoscience:oai:infoscience.tind.io:218206 2023-05-15T13:38:50+02:00 Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter Sulzberger, Barbara Arey, J. Samuel 2016-04-26T06:53:39Z https://doi.org/10.1021/acs.est.5b05994 http://infoscience.epfl.ch/record/218206 unknown Washington, Amer Chemical Soc doi:10.1021/acs.est.5b05994 ISI:000379366300007 http://infoscience.epfl.ch/record/218206 http://infoscience.epfl.ch/record/218206 Text 2016 ftinfoscience https://doi.org/10.1021/acs.est.5b05994 2023-02-13T22:33:40Z Local climates in the Northern and Southern Hemisphere are influenced by Arctic Amplification and by interactions of the Antarctic ozone hole with climate change, respectively. Polar changes may affect hydroclimatic conditions in temperate regions, for example, by increasing the length and intensity of precipitation events at Northern Hemisphere midlatitudes. Additionally, global warming has led to the thawing of ancient permafrost soils, particularly in Arctic regions, due to Arctic Amplification. Both heavy precipitation events and thawing of permafrost are increasing the net transfer of terrestrially derived dissolved organic matter (DOM) from land to surface waters. In aquatic ecosystems, UV-induced oxidation of terrigenous DOM (tDOM) produces atmospheric CO2 and this process is one of several mechanisms by which natural organic matter in aquatic and soil environments may play an important role in climate feedbacks. The Arctic is particularly affected by these processes: for example, melting of Arctic sea ice allows solar UV radiation to penetrate into the ice-free Arctic Ocean and to cause photochemical reactions that result in bleaching and mineralization of tDOM. Open questions, in addition to those shown in the Graphical Abstract, remain regarding the resulting contributions of tDOM photomineralization to CO2 production and global warming. Text Antarc* Antarctic Arctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Arctic Arctic Ocean The Antarctic Environmental Science & Technology 50 13 6621 6631 |
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Open Polar |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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unknown |
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Local climates in the Northern and Southern Hemisphere are influenced by Arctic Amplification and by interactions of the Antarctic ozone hole with climate change, respectively. Polar changes may affect hydroclimatic conditions in temperate regions, for example, by increasing the length and intensity of precipitation events at Northern Hemisphere midlatitudes. Additionally, global warming has led to the thawing of ancient permafrost soils, particularly in Arctic regions, due to Arctic Amplification. Both heavy precipitation events and thawing of permafrost are increasing the net transfer of terrestrially derived dissolved organic matter (DOM) from land to surface waters. In aquatic ecosystems, UV-induced oxidation of terrigenous DOM (tDOM) produces atmospheric CO2 and this process is one of several mechanisms by which natural organic matter in aquatic and soil environments may play an important role in climate feedbacks. The Arctic is particularly affected by these processes: for example, melting of Arctic sea ice allows solar UV radiation to penetrate into the ice-free Arctic Ocean and to cause photochemical reactions that result in bleaching and mineralization of tDOM. Open questions, in addition to those shown in the Graphical Abstract, remain regarding the resulting contributions of tDOM photomineralization to CO2 production and global warming. |
format |
Text |
author |
Sulzberger, Barbara Arey, J. Samuel |
spellingShingle |
Sulzberger, Barbara Arey, J. Samuel Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
author_facet |
Sulzberger, Barbara Arey, J. Samuel |
author_sort |
Sulzberger, Barbara |
title |
Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
title_short |
Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
title_full |
Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
title_fullStr |
Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
title_full_unstemmed |
Impacts of Polar Changes on the UV-induced Mineralization of Terrigenous Dissolved Organic Matter |
title_sort |
impacts of polar changes on the uv-induced mineralization of terrigenous dissolved organic matter |
publisher |
Washington, Amer Chemical Soc |
publishDate |
2016 |
url |
https://doi.org/10.1021/acs.est.5b05994 http://infoscience.epfl.ch/record/218206 |
geographic |
Antarctic Arctic Arctic Ocean The Antarctic |
geographic_facet |
Antarctic Arctic Arctic Ocean The Antarctic |
genre |
Antarc* Antarctic Arctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice |
op_source |
http://infoscience.epfl.ch/record/218206 |
op_relation |
doi:10.1021/acs.est.5b05994 ISI:000379366300007 http://infoscience.epfl.ch/record/218206 |
op_doi |
https://doi.org/10.1021/acs.est.5b05994 |
container_title |
Environmental Science & Technology |
container_volume |
50 |
container_issue |
13 |
container_start_page |
6621 |
op_container_end_page |
6631 |
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1766111530985717760 |