Arctic river discharge trends since 7ka BP
The Arctic hydrological cycle throughout the Holocene is analyzed based on the results of transient simulations with the coupled atmosphere-ocean circulation model ECHO-G. The results suggest a ~ 2% increase of mid-Holocene to preindustrial Arctic river discharges for the Eurasian continent. However...
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Online Access: | https://epic.awi.de/id/eprint/23232/ https://doi.org/10.1016/j.gloplacha.2011.07.006 https://hdl.handle.net/10013/epic.38123 |
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ftawi:oai:epic.awi.de:23232 2024-09-15T17:51:00+00:00 Arctic river discharge trends since 7ka BP Wagner, Axel Lohmann, Gerrit Prange, M. 2011-10 https://epic.awi.de/id/eprint/23232/ https://doi.org/10.1016/j.gloplacha.2011.07.006 https://hdl.handle.net/10013/epic.38123 unknown ELSEVIER SCIENCE BV Wagner, A. , Lohmann, G. orcid:0000-0003-2089-733X and Prange, M. (2011) Arctic river discharge trends since 7ka BP , Global and Planetary Change, 79 (1-2), pp. 48-60 . doi:10.1016/j.gloplacha.2011.07.006 <https://doi.org/10.1016/j.gloplacha.2011.07.006> , hdl:10013/epic.38123 EPIC3Global and Planetary Change, ELSEVIER SCIENCE BV, 79(1-2), pp. 48-60, ISSN: 0921-8181 Article isiRev 2011 ftawi https://doi.org/10.1016/j.gloplacha.2011.07.006 2024-06-24T04:02:26Z The Arctic hydrological cycle throughout the Holocene is analyzed based on the results of transient simulations with the coupled atmosphere-ocean circulation model ECHO-G. The results suggest a ~ 2% increase of mid-Holocene to preindustrial Arctic river discharges for the Eurasian continent. However, rivers of the North America Arctic realm show a moderate runoff decline of approximately 4 to 5% for the same period. The total river discharge into the Arctic Ocean has remained at an approximately constant preindustrial level since the mid-Holocene. The positive discharge trend within Eurasia is caused by a more rapid decrease in local net evaporation compared to a smaller decline in advected moisture and hence precipitation. This effect is neither recognized within the North American Arctic domain nor in the far eastern part of the Eurasian Arctic realm. A detailed comparison of these model findings with a variety of proxy studies is conducted. The collected proxy records show trends of continental surface temperatures and precipitation rates that are consistent with the simulations. A continuation of the transient Holocene runs for the 19th and 20th century with increased greenhouse gasses indicates an increase of the total river influx into the Arctic Ocean of up to 7.6%. The Eurasian river discharges increase by 7.5%, the North American discharges by up to 8.4%. The most rapid increases have been detected since the beginning of the 20th century. These results are corroborated by the observed rising of Arctic river discharges during the last century which is attributed to anthropogenic warming. The acceleration of the Arctic hydrological cycle in the 20th century is without precedence in the Holocene. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Global and Planetary Change 79 1-2 48 60 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The Arctic hydrological cycle throughout the Holocene is analyzed based on the results of transient simulations with the coupled atmosphere-ocean circulation model ECHO-G. The results suggest a ~ 2% increase of mid-Holocene to preindustrial Arctic river discharges for the Eurasian continent. However, rivers of the North America Arctic realm show a moderate runoff decline of approximately 4 to 5% for the same period. The total river discharge into the Arctic Ocean has remained at an approximately constant preindustrial level since the mid-Holocene. The positive discharge trend within Eurasia is caused by a more rapid decrease in local net evaporation compared to a smaller decline in advected moisture and hence precipitation. This effect is neither recognized within the North American Arctic domain nor in the far eastern part of the Eurasian Arctic realm. A detailed comparison of these model findings with a variety of proxy studies is conducted. The collected proxy records show trends of continental surface temperatures and precipitation rates that are consistent with the simulations. A continuation of the transient Holocene runs for the 19th and 20th century with increased greenhouse gasses indicates an increase of the total river influx into the Arctic Ocean of up to 7.6%. The Eurasian river discharges increase by 7.5%, the North American discharges by up to 8.4%. The most rapid increases have been detected since the beginning of the 20th century. These results are corroborated by the observed rising of Arctic river discharges during the last century which is attributed to anthropogenic warming. The acceleration of the Arctic hydrological cycle in the 20th century is without precedence in the Holocene. |
format |
Article in Journal/Newspaper |
author |
Wagner, Axel Lohmann, Gerrit Prange, M. |
spellingShingle |
Wagner, Axel Lohmann, Gerrit Prange, M. Arctic river discharge trends since 7ka BP |
author_facet |
Wagner, Axel Lohmann, Gerrit Prange, M. |
author_sort |
Wagner, Axel |
title |
Arctic river discharge trends since 7ka BP |
title_short |
Arctic river discharge trends since 7ka BP |
title_full |
Arctic river discharge trends since 7ka BP |
title_fullStr |
Arctic river discharge trends since 7ka BP |
title_full_unstemmed |
Arctic river discharge trends since 7ka BP |
title_sort |
arctic river discharge trends since 7ka bp |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/23232/ https://doi.org/10.1016/j.gloplacha.2011.07.006 https://hdl.handle.net/10013/epic.38123 |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_source |
EPIC3Global and Planetary Change, ELSEVIER SCIENCE BV, 79(1-2), pp. 48-60, ISSN: 0921-8181 |
op_relation |
Wagner, A. , Lohmann, G. orcid:0000-0003-2089-733X and Prange, M. (2011) Arctic river discharge trends since 7ka BP , Global and Planetary Change, 79 (1-2), pp. 48-60 . doi:10.1016/j.gloplacha.2011.07.006 <https://doi.org/10.1016/j.gloplacha.2011.07.006> , hdl:10013/epic.38123 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2011.07.006 |
container_title |
Global and Planetary Change |
container_volume |
79 |
container_issue |
1-2 |
container_start_page |
48 |
op_container_end_page |
60 |
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1810292803698163712 |