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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American Chemical Society
2016
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Online Access: | https://doi.org/10.1021/acs.est.5b05994 |
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fteawag:oai:dora:eawag_10468 2024-09-15T17:48:19+00:00 Impacts of polar changes on the UV-induced mineralization of terrigenous dissolved organic matter Sulzberger, Barbara Arey, J. Samuel 2016 https://doi.org/10.1021/acs.est.5b05994 eng eng American Chemical Society Environmental Science and Technology--Environ. Sci. Technol.--journals:872--0013-936X--1520-5851 eawag:10468 journal id: journals:872 issn: 0013-936X e-issn: 1520-5851 ut: 000379366300007 local: 18408 scopus: 2-s2.0-84978977446 doi:10.1021/acs.est.5b05994 Text Journal Article 2016 fteawag https://doi.org/10.1021/acs.est.5b05994 2024-08-05T03:04:28Z 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 CO 2 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 CO 2 production and global warming. Article in Journal/Newspaper Antarc* Antarctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice DORA Eawag Environmental Science & Technology 50 13 6621 6631 |
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English |
description |
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 CO 2 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 CO 2 production and global warming. |
format |
Article in Journal/Newspaper |
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 |
American Chemical Society |
publishDate |
2016 |
url |
https://doi.org/10.1021/acs.est.5b05994 |
genre |
Antarc* Antarctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice |
genre_facet |
Antarc* Antarctic Arctic Ocean Climate change Global warming Ice permafrost Sea ice |
op_relation |
Environmental Science and Technology--Environ. Sci. Technol.--journals:872--0013-936X--1520-5851 eawag:10468 journal id: journals:872 issn: 0013-936X e-issn: 1520-5851 ut: 000379366300007 local: 18408 scopus: 2-s2.0-84978977446 doi:10.1021/acs.est.5b05994 |
op_doi |
https://doi.org/10.1021/acs.est.5b05994 |
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Environmental Science & Technology |
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50 |
container_issue |
13 |
container_start_page |
6621 |
op_container_end_page |
6631 |
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1810289468105555968 |