Warming Water in Arctic Terrestrial Rivers under Climate Change
Recent years have seen an obvious warming trend in the Arctic. Streamflow and water temperature Tw are important parameters representing the changes of Arctic rivers under climate change. However, few quantitative assessments of changes in river Tw have been conducted at the pan-Arctic scale. To car...
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ftkitamiit:oai:kitami-it.repo.nii.ac.jp:00008651 2023-05-15T14:23:49+02:00 Warming Water in Arctic Terrestrial Rivers under Climate Change Park, Hotaek Yoshikawa, Yasuhiro Yang, Daqing Oshima, Kazuhiro 2017-07 application/pdf https://kitami-it.repo.nii.ac.jp/record/8651/files/2017-07 Warming Water in Arctic Terrestrial Rivers under Climate Change.pdf eng eng American Meteorological Society https://doi.org/10.1175/JHM-D-16-0260.1 Journal of Hydrometeorology 7 18 1983 1995 1525-755X https://kitami-it.repo.nii.ac.jp/record/8651/files/2017-07 Warming Water in Arctic Terrestrial Rivers under Climate Change.pdf c 2017 American Meteorological Society open access Arctic Rivers Hydrologic cycle Hydrologic models Land surface model Trends 2017 ftkitamiit https://doi.org/10.1175/JHM-D-16-0260.1 2023-02-26T09:15:47Z Recent years have seen an obvious warming trend in the Arctic. Streamflow and water temperature Tw are important parameters representing the changes of Arctic rivers under climate change. However, few quantitative assessments of changes in river Tw have been conducted at the pan-Arctic scale. To carry out such an assessment, this study used a modeling framework combining a land process model [the coupled hydrological and biogeochemical model (CHANGE)] with models of river discharge Q, ice cover, and Tw dynamics. The Tw model was improved by incorporating heat exchange at the air–water interface and heat advection from upstream through the channel network. The model was applied to pan-Arctic terrestrial rivers flowing into the Arctic Ocean over the period 1979–2013 and quantitatively assessed trends of Tw at regional and pan-Arctic scales. The simulated Tw values were consistent with observations at the mouths of major pan-Arctic rivers. The model simulations indicated a warming trend of Tw by 0.16°C decade−1 at the outlets of the pan-Arctic rivers, including widespread spatial warming consistent with increased air temperature Ta. The strong impact of Ta on Tw was verified by model sensitivity analysis based on various scenarios involving changes in the Ta and Q forcings. Finally, this study demonstrated the warming of Tw in Arctic rivers induced by Ta warming, suggesting the potential for warming Tw of Arctic rivers under future climate change scenarios. journal article Other/Unknown Material Arctic Arctic Arctic Ocean Climate change Kitami Institute of Technology Repository (KIT-R) Arctic Arctic Ocean Journal of Hydrometeorology 18 7 1983 1995 |
institution |
Open Polar |
collection |
Kitami Institute of Technology Repository (KIT-R) |
op_collection_id |
ftkitamiit |
language |
English |
topic |
Arctic Rivers Hydrologic cycle Hydrologic models Land surface model Trends |
spellingShingle |
Arctic Rivers Hydrologic cycle Hydrologic models Land surface model Trends Park, Hotaek Yoshikawa, Yasuhiro Yang, Daqing Oshima, Kazuhiro Warming Water in Arctic Terrestrial Rivers under Climate Change |
topic_facet |
Arctic Rivers Hydrologic cycle Hydrologic models Land surface model Trends |
description |
Recent years have seen an obvious warming trend in the Arctic. Streamflow and water temperature Tw are important parameters representing the changes of Arctic rivers under climate change. However, few quantitative assessments of changes in river Tw have been conducted at the pan-Arctic scale. To carry out such an assessment, this study used a modeling framework combining a land process model [the coupled hydrological and biogeochemical model (CHANGE)] with models of river discharge Q, ice cover, and Tw dynamics. The Tw model was improved by incorporating heat exchange at the air–water interface and heat advection from upstream through the channel network. The model was applied to pan-Arctic terrestrial rivers flowing into the Arctic Ocean over the period 1979–2013 and quantitatively assessed trends of Tw at regional and pan-Arctic scales. The simulated Tw values were consistent with observations at the mouths of major pan-Arctic rivers. The model simulations indicated a warming trend of Tw by 0.16°C decade−1 at the outlets of the pan-Arctic rivers, including widespread spatial warming consistent with increased air temperature Ta. The strong impact of Ta on Tw was verified by model sensitivity analysis based on various scenarios involving changes in the Ta and Q forcings. Finally, this study demonstrated the warming of Tw in Arctic rivers induced by Ta warming, suggesting the potential for warming Tw of Arctic rivers under future climate change scenarios. journal article |
author |
Park, Hotaek Yoshikawa, Yasuhiro Yang, Daqing Oshima, Kazuhiro |
author_facet |
Park, Hotaek Yoshikawa, Yasuhiro Yang, Daqing Oshima, Kazuhiro |
author_sort |
Park, Hotaek |
title |
Warming Water in Arctic Terrestrial Rivers under Climate Change |
title_short |
Warming Water in Arctic Terrestrial Rivers under Climate Change |
title_full |
Warming Water in Arctic Terrestrial Rivers under Climate Change |
title_fullStr |
Warming Water in Arctic Terrestrial Rivers under Climate Change |
title_full_unstemmed |
Warming Water in Arctic Terrestrial Rivers under Climate Change |
title_sort |
warming water in arctic terrestrial rivers under climate change |
publisher |
American Meteorological Society |
publishDate |
2017 |
url |
https://kitami-it.repo.nii.ac.jp/record/8651/files/2017-07 Warming Water in Arctic Terrestrial Rivers under Climate Change.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Climate change |
genre_facet |
Arctic Arctic Arctic Ocean Climate change |
op_relation |
https://doi.org/10.1175/JHM-D-16-0260.1 Journal of Hydrometeorology 7 18 1983 1995 1525-755X https://kitami-it.repo.nii.ac.jp/record/8651/files/2017-07 Warming Water in Arctic Terrestrial Rivers under Climate Change.pdf |
op_rights |
c 2017 American Meteorological Society open access |
op_doi |
https://doi.org/10.1175/JHM-D-16-0260.1 |
container_title |
Journal of Hydrometeorology |
container_volume |
18 |
container_issue |
7 |
container_start_page |
1983 |
op_container_end_page |
1995 |
_version_ |
1766296298092232704 |