Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation
Study region: Hudson Bay Lowlands watersheds, Ontario, Canada. Study Focus: The rivers in the Hudson Bay Lowlands are a major source of freshwater entering the Arctic Ocean and they also cause major floods. In recent decades, this region has been affected by major changes in hydroclimatic processes...
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ftdoajarticles:oai:doaj.org/article:a4873681df874002a1d27a0600ba46f9 2023-05-15T15:08:49+02:00 Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation Olivier Champagne M. Altaf Arain Shusen Wang Martin Leduc Hazen A.J. Russell 2021-08-01T00:00:00Z https://doi.org/10.1016/j.ejrh.2021.100868 https://doaj.org/article/a4873681df874002a1d27a0600ba46f9 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2214581821000975 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2021.100868 https://doaj.org/article/a4873681df874002a1d27a0600ba46f9 Journal of Hydrology: Regional Studies, Vol 36, Iss , Pp 100868- (2021) Hudson Bay Lowlands Subarctic region MESH Streamflow ERA5 Atmospheric circulation Physical geography GB3-5030 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.1016/j.ejrh.2021.100868 2022-12-31T06:02:00Z Study region: Hudson Bay Lowlands watersheds, Ontario, Canada. Study Focus: The rivers in the Hudson Bay Lowlands are a major source of freshwater entering the Arctic Ocean and they also cause major floods. In recent decades, this region has been affected by major changes in hydroclimatic processes attributed to climate change and natural climate variability. In this study, we used ERA5 reanalysis data, hydrometric observations, and the hydrological model MESH, to investigate the impact of atmospheric circulation on the inter-decadal variability of streamflow between 1979 and 2018 in the Hudson Bay Lowlands. The natural climate variability was assessed using a weather regimes approach based on the discretization of daily geopotential height anomalies (Z500) from ERA5 reanalysis, as well as large scale oceanic and atmospheric variability modes. New hydrological insights: The results showed an anomalous convergence of atmospheric moisture flux between 1995–2008 that enhanced precipitation and increased streamflow in the western part of the region. This moisture convergence was likely driven by the combination of (i) low pressure anomalies in the East Coast of North America and (ii) low pressure anomalies in western regions of Canada, associated with the cold phase of the pacific decadal oscillation (PDO). Since 2009, streamflow remains high, likely due to more groundwater discharge associated with the degradation of permafrost. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Hudson Bay permafrost Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Canada Hudson Hudson Bay Pacific Journal of Hydrology: Regional Studies 36 100868 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Hudson Bay Lowlands Subarctic region MESH Streamflow ERA5 Atmospheric circulation Physical geography GB3-5030 Geology QE1-996.5 |
spellingShingle |
Hudson Bay Lowlands Subarctic region MESH Streamflow ERA5 Atmospheric circulation Physical geography GB3-5030 Geology QE1-996.5 Olivier Champagne M. Altaf Arain Shusen Wang Martin Leduc Hazen A.J. Russell Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
topic_facet |
Hudson Bay Lowlands Subarctic region MESH Streamflow ERA5 Atmospheric circulation Physical geography GB3-5030 Geology QE1-996.5 |
description |
Study region: Hudson Bay Lowlands watersheds, Ontario, Canada. Study Focus: The rivers in the Hudson Bay Lowlands are a major source of freshwater entering the Arctic Ocean and they also cause major floods. In recent decades, this region has been affected by major changes in hydroclimatic processes attributed to climate change and natural climate variability. In this study, we used ERA5 reanalysis data, hydrometric observations, and the hydrological model MESH, to investigate the impact of atmospheric circulation on the inter-decadal variability of streamflow between 1979 and 2018 in the Hudson Bay Lowlands. The natural climate variability was assessed using a weather regimes approach based on the discretization of daily geopotential height anomalies (Z500) from ERA5 reanalysis, as well as large scale oceanic and atmospheric variability modes. New hydrological insights: The results showed an anomalous convergence of atmospheric moisture flux between 1995–2008 that enhanced precipitation and increased streamflow in the western part of the region. This moisture convergence was likely driven by the combination of (i) low pressure anomalies in the East Coast of North America and (ii) low pressure anomalies in western regions of Canada, associated with the cold phase of the pacific decadal oscillation (PDO). Since 2009, streamflow remains high, likely due to more groundwater discharge associated with the degradation of permafrost. |
format |
Article in Journal/Newspaper |
author |
Olivier Champagne M. Altaf Arain Shusen Wang Martin Leduc Hazen A.J. Russell |
author_facet |
Olivier Champagne M. Altaf Arain Shusen Wang Martin Leduc Hazen A.J. Russell |
author_sort |
Olivier Champagne |
title |
Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
title_short |
Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
title_full |
Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
title_fullStr |
Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
title_full_unstemmed |
Interdecadal variability of streamflow in the Hudson Bay Lowlands watersheds driven by atmospheric circulation |
title_sort |
interdecadal variability of streamflow in the hudson bay lowlands watersheds driven by atmospheric circulation |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ejrh.2021.100868 https://doaj.org/article/a4873681df874002a1d27a0600ba46f9 |
geographic |
Arctic Arctic Ocean Canada Hudson Hudson Bay Pacific |
geographic_facet |
Arctic Arctic Ocean Canada Hudson Hudson Bay Pacific |
genre |
Arctic Arctic Ocean Climate change Hudson Bay permafrost Subarctic |
genre_facet |
Arctic Arctic Ocean Climate change Hudson Bay permafrost Subarctic |
op_source |
Journal of Hydrology: Regional Studies, Vol 36, Iss , Pp 100868- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2214581821000975 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2021.100868 https://doaj.org/article/a4873681df874002a1d27a0600ba46f9 |
op_doi |
https://doi.org/10.1016/j.ejrh.2021.100868 |
container_title |
Journal of Hydrology: Regional Studies |
container_volume |
36 |
container_start_page |
100868 |
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1766340109104316416 |