The coastal streamflow flux in the Regional Arctic System Model
The coastal streamflow flux from the Arctic drainage basin is an important driver of dynamics in the coupled ice-ocean system. Comprising more than one third of the total freshwater flux into the Arctic Ocean, streamflow is a key component of the regional and global freshwater cycle. To better repre...
Published in: | Journal of Geophysical Research: Oceans |
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Language: | English |
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2017
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Online Access: | https://doi.org/10.1002/2016JC012323 |
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ftncar:oai:drupal-site.org:articles_19786 2023-09-05T13:16:15+02:00 The coastal streamflow flux in the Regional Arctic System Model Hamman, Joseph (author) Nijssen, Bart (author) Roberts, Andrew (author) Craig, Anthony (author) Maslowski, Wieslaw (author) Osinski, Robert (author) 2017-03 https://doi.org/10.1002/2016JC012323 en eng Journal of Geophysical Research: Oceans--J. Geophys. Res. Oceans--21699275 articles:19786 ark:/85065/d71v5gwd doi:10.1002/2016JC012323 Copyright 2017 American Geophysical Union. article Text 2017 ftncar https://doi.org/10.1002/2016JC012323 2023-08-14T18:47:24Z The coastal streamflow flux from the Arctic drainage basin is an important driver of dynamics in the coupled ice-ocean system. Comprising more than one third of the total freshwater flux into the Arctic Ocean, streamflow is a key component of the regional and global freshwater cycle. To better represent the coupling of the streamflow flux to the ocean, we have developed and applied the RVIC streamflow routing model within the Regional Arctic System Model (RASM). The RASM is a high-resolution regional Earth System Model whose domain includes all of the Arctic drainage basin. In this paper, we introduce the RVIC streamflow routing model, detailing its application within RASM and its advancements in terms of representing high-resolution streamflow processes. We evaluate model simulated streamflow relative to in situ observations and demonstrate a method for improving model performance using a simple optimization procedure. We also present a new, spatially and temporally consistent, high-resolution data set of coastal freshwater fluxes for the Arctic drainage basin and surrounding areas that is based on a fully coupled RASM simulation and intended for use in Arctic Ocean modeling applications. This data set is evaluated relative to other coastal streamflow data sets commonly used by the ocean modeling community. We demonstrate that the RASM-simulated streamflow flux better represents the annual cycle than existing data sets, especially in ungauged areas. Finally, we assess the impact that streamflow has on the coupled ice-ocean system, finding that the presence of streamflow leads to reduced sea surface salinity, increased sea surface temperatures, and decreased sea ice thickness. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Arctic Ocean Journal of Geophysical Research: Oceans 122 3 1683 1701 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The coastal streamflow flux from the Arctic drainage basin is an important driver of dynamics in the coupled ice-ocean system. Comprising more than one third of the total freshwater flux into the Arctic Ocean, streamflow is a key component of the regional and global freshwater cycle. To better represent the coupling of the streamflow flux to the ocean, we have developed and applied the RVIC streamflow routing model within the Regional Arctic System Model (RASM). The RASM is a high-resolution regional Earth System Model whose domain includes all of the Arctic drainage basin. In this paper, we introduce the RVIC streamflow routing model, detailing its application within RASM and its advancements in terms of representing high-resolution streamflow processes. We evaluate model simulated streamflow relative to in situ observations and demonstrate a method for improving model performance using a simple optimization procedure. We also present a new, spatially and temporally consistent, high-resolution data set of coastal freshwater fluxes for the Arctic drainage basin and surrounding areas that is based on a fully coupled RASM simulation and intended for use in Arctic Ocean modeling applications. This data set is evaluated relative to other coastal streamflow data sets commonly used by the ocean modeling community. We demonstrate that the RASM-simulated streamflow flux better represents the annual cycle than existing data sets, especially in ungauged areas. Finally, we assess the impact that streamflow has on the coupled ice-ocean system, finding that the presence of streamflow leads to reduced sea surface salinity, increased sea surface temperatures, and decreased sea ice thickness. |
author2 |
Hamman, Joseph (author) Nijssen, Bart (author) Roberts, Andrew (author) Craig, Anthony (author) Maslowski, Wieslaw (author) Osinski, Robert (author) |
format |
Article in Journal/Newspaper |
title |
The coastal streamflow flux in the Regional Arctic System Model |
spellingShingle |
The coastal streamflow flux in the Regional Arctic System Model |
title_short |
The coastal streamflow flux in the Regional Arctic System Model |
title_full |
The coastal streamflow flux in the Regional Arctic System Model |
title_fullStr |
The coastal streamflow flux in the Regional Arctic System Model |
title_full_unstemmed |
The coastal streamflow flux in the Regional Arctic System Model |
title_sort |
coastal streamflow flux in the regional arctic system model |
publishDate |
2017 |
url |
https://doi.org/10.1002/2016JC012323 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_relation |
Journal of Geophysical Research: Oceans--J. Geophys. Res. Oceans--21699275 articles:19786 ark:/85065/d71v5gwd doi:10.1002/2016JC012323 |
op_rights |
Copyright 2017 American Geophysical Union. |
op_doi |
https://doi.org/10.1002/2016JC012323 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
3 |
container_start_page |
1683 |
op_container_end_page |
1701 |
_version_ |
1776197904717840384 |