Results of modelled Arctic river discharge trends since 7 ka 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. Howeve...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.742984 2024-09-15T17:50:35+00:00 Results of modelled Arctic river discharge trends since 7 ka BP Wagner, Axel Lohmann, Gerrit Prange, Matthias 2011 text/tab-separated-values, 396 data points https://doi.pangaea.de/10.1594/PANGAEA.742984 https://doi.org/10.1594/PANGAEA.742984 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.742984 https://doi.org/10.1594/PANGAEA.742984 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Wagner, Axel; Lohmann, Gerrit; Prange, Matthias (2011): Arctic river discharge trends since 7 ka BP. Global and Planetary Change, 79(1-2), 48-60, https://doi.org/10.1016/j.gloplacha.2011.07.006 - Code Date/time end Date/time start Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK Name Number of levels Parameter Sample code/label Uniform resource locator/link to model result file Unit dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.74298410.1016/j.gloplacha.2011.07.006 2024-07-24T02:31:31Z 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 gases 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. Dataset Arctic Arctic Ocean PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
- Code Date/time end Date/time start Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK Name Number of levels Parameter Sample code/label Uniform resource locator/link to model result file Unit |
spellingShingle |
- Code Date/time end Date/time start Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK Name Number of levels Parameter Sample code/label Uniform resource locator/link to model result file Unit Wagner, Axel Lohmann, Gerrit Prange, Matthias Results of modelled Arctic river discharge trends since 7 ka BP |
topic_facet |
- Code Date/time end Date/time start Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK Name Number of levels Parameter Sample code/label Uniform resource locator/link to model result file Unit |
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 gases 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 |
Dataset |
author |
Wagner, Axel Lohmann, Gerrit Prange, Matthias |
author_facet |
Wagner, Axel Lohmann, Gerrit Prange, Matthias |
author_sort |
Wagner, Axel |
title |
Results of modelled Arctic river discharge trends since 7 ka BP |
title_short |
Results of modelled Arctic river discharge trends since 7 ka BP |
title_full |
Results of modelled Arctic river discharge trends since 7 ka BP |
title_fullStr |
Results of modelled Arctic river discharge trends since 7 ka BP |
title_full_unstemmed |
Results of modelled Arctic river discharge trends since 7 ka BP |
title_sort |
results of modelled arctic river discharge trends since 7 ka bp |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.742984 https://doi.org/10.1594/PANGAEA.742984 |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Supplement to: Wagner, Axel; Lohmann, Gerrit; Prange, Matthias (2011): Arctic river discharge trends since 7 ka BP. Global and Planetary Change, 79(1-2), 48-60, https://doi.org/10.1016/j.gloplacha.2011.07.006 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.742984 https://doi.org/10.1594/PANGAEA.742984 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74298410.1016/j.gloplacha.2011.07.006 |
_version_ |
1810292390022348800 |