Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region
Climate warming and related drivers of soil thermal change in the Arctic are expected to modify the distribution and dynamics of carbon contained in perennially frozen grounds. Thawing of permafrost in the Mackenzie River watershed of northwestern Canada, coupled with increases in river discharge an...
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2023
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/592764 2023-06-11T04:03:06+02:00 Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region Lizotte, Martine Juhls, Bennet Matsuoka, Atsushi Massicotte, Philippe Mével, Gaëlle Anikina, David Obie James Antonova, Sofia Bécu, Guislain Béguin, Marine Bélanger, Simon Bossé-Demers, Thomas Bröder, Lisa Bruyant, Flavienne Chaillou, Gwénaëlle Comte, Jérôme Couture, Raoul-Marie Devred, Emmanuel Deslongchamps, Gabrièle Dezutter, Thibaud Dillon, Miles Doxaran, David 2023-04-13 application/application/pdf https://hdl.handle.net/20.500.11850/592764 https://doi.org/10.3929/ethz-b-000592764 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-15-1617-2023 http://hdl.handle.net/20.500.11850/592764 doi:10.3929/ethz-b-000592764 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International Earth System Science Data, 15 (4) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftethz https://doi.org/20.500.11850/59276410.3929/ethz-b-00059276410.5194/essd-15-1617-2023 2023-05-28T23:50:40Z Climate warming and related drivers of soil thermal change in the Arctic are expected to modify the distribution and dynamics of carbon contained in perennially frozen grounds. Thawing of permafrost in the Mackenzie River watershed of northwestern Canada, coupled with increases in river discharge and coastal erosion, triggers the release of terrestrial organic matter (OMt) from the largest Arctic drainage basin in North America into the Arctic Ocean. While this process is ongoing and its rate is accelerating, the fate of the newly mobilized organic matter as it transits from the watershed through the delta and into the marine system remains poorly understood. In the framework of the European Horizon 2020 Nunataryuk programme, and as part of the Work Package 4 (WP4) Coastal Waters theme, four field expeditions were conducted in the Mackenzie Delta region and southern Beaufort Sea from April to September 2019. The temporal sampling design allowed the survey of ambient conditions in the coastal waters under full ice cover prior to the spring freshet, during ice breakup in summer, and anterior to the freeze-up period in fall. To capture the fluvial–marine transition zone, and with distinct challenges related to shallow waters and changing seasonal and meteorological conditions, the field sampling was conducted in close partnership with members of the communities of Aklavik, Inuvik and Tuktoyaktuk, using several platforms, namely helicopters, snowmobiles, and small boats. Water column profiles of physical and optical variables were measured in situ, while surface water, groundwater, and sediment samples were collected and preserved for the determination of the composition and sources of OMt, including particulate and dissolved organic carbon (POC and DOC), and colored dissolved organic matter (CDOM), as well as a suite of physical, chemical, and biological variables. Here we present an overview of the standardized datasets, including hydrographic profiles, remote sensing reflectance, temperature and salinity, ... Article in Journal/Newspaper Aklavik Arctic Arctic Ocean Beaufort Sea Ice Inuvik Mackenzie Delta Mackenzie river permafrost ETH Zürich Research Collection Aklavik ENVELOPE(-135.011,-135.011,68.219,68.219) Arctic Arctic Ocean Canada Inuvik ENVELOPE(-133.610,-133.610,68.341,68.341) Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Mackenzie River Tuktoyaktuk ENVELOPE(-133.006,-133.006,69.425,69.425) |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
description |
Climate warming and related drivers of soil thermal change in the Arctic are expected to modify the distribution and dynamics of carbon contained in perennially frozen grounds. Thawing of permafrost in the Mackenzie River watershed of northwestern Canada, coupled with increases in river discharge and coastal erosion, triggers the release of terrestrial organic matter (OMt) from the largest Arctic drainage basin in North America into the Arctic Ocean. While this process is ongoing and its rate is accelerating, the fate of the newly mobilized organic matter as it transits from the watershed through the delta and into the marine system remains poorly understood. In the framework of the European Horizon 2020 Nunataryuk programme, and as part of the Work Package 4 (WP4) Coastal Waters theme, four field expeditions were conducted in the Mackenzie Delta region and southern Beaufort Sea from April to September 2019. The temporal sampling design allowed the survey of ambient conditions in the coastal waters under full ice cover prior to the spring freshet, during ice breakup in summer, and anterior to the freeze-up period in fall. To capture the fluvial–marine transition zone, and with distinct challenges related to shallow waters and changing seasonal and meteorological conditions, the field sampling was conducted in close partnership with members of the communities of Aklavik, Inuvik and Tuktoyaktuk, using several platforms, namely helicopters, snowmobiles, and small boats. Water column profiles of physical and optical variables were measured in situ, while surface water, groundwater, and sediment samples were collected and preserved for the determination of the composition and sources of OMt, including particulate and dissolved organic carbon (POC and DOC), and colored dissolved organic matter (CDOM), as well as a suite of physical, chemical, and biological variables. Here we present an overview of the standardized datasets, including hydrographic profiles, remote sensing reflectance, temperature and salinity, ... |
format |
Article in Journal/Newspaper |
author |
Lizotte, Martine Juhls, Bennet Matsuoka, Atsushi Massicotte, Philippe Mével, Gaëlle Anikina, David Obie James Antonova, Sofia Bécu, Guislain Béguin, Marine Bélanger, Simon Bossé-Demers, Thomas Bröder, Lisa Bruyant, Flavienne Chaillou, Gwénaëlle Comte, Jérôme Couture, Raoul-Marie Devred, Emmanuel Deslongchamps, Gabrièle Dezutter, Thibaud Dillon, Miles Doxaran, David |
spellingShingle |
Lizotte, Martine Juhls, Bennet Matsuoka, Atsushi Massicotte, Philippe Mével, Gaëlle Anikina, David Obie James Antonova, Sofia Bécu, Guislain Béguin, Marine Bélanger, Simon Bossé-Demers, Thomas Bröder, Lisa Bruyant, Flavienne Chaillou, Gwénaëlle Comte, Jérôme Couture, Raoul-Marie Devred, Emmanuel Deslongchamps, Gabrièle Dezutter, Thibaud Dillon, Miles Doxaran, David Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
author_facet |
Lizotte, Martine Juhls, Bennet Matsuoka, Atsushi Massicotte, Philippe Mével, Gaëlle Anikina, David Obie James Antonova, Sofia Bécu, Guislain Béguin, Marine Bélanger, Simon Bossé-Demers, Thomas Bröder, Lisa Bruyant, Flavienne Chaillou, Gwénaëlle Comte, Jérôme Couture, Raoul-Marie Devred, Emmanuel Deslongchamps, Gabrièle Dezutter, Thibaud Dillon, Miles Doxaran, David |
author_sort |
Lizotte, Martine |
title |
Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
title_short |
Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
title_full |
Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
title_fullStr |
Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
title_full_unstemmed |
Nunataryuk field campaigns: Understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region |
title_sort |
nunataryuk field campaigns: understanding the origin and fate of terrestrial organic matter in the coastal waters of the mackenzie delta region |
publisher |
Copernicus |
publishDate |
2023 |
url |
https://hdl.handle.net/20.500.11850/592764 https://doi.org/10.3929/ethz-b-000592764 |
long_lat |
ENVELOPE(-135.011,-135.011,68.219,68.219) ENVELOPE(-133.610,-133.610,68.341,68.341) ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-133.006,-133.006,69.425,69.425) |
geographic |
Aklavik Arctic Arctic Ocean Canada Inuvik Mackenzie Delta Mackenzie River Tuktoyaktuk |
geographic_facet |
Aklavik Arctic Arctic Ocean Canada Inuvik Mackenzie Delta Mackenzie River Tuktoyaktuk |
genre |
Aklavik Arctic Arctic Ocean Beaufort Sea Ice Inuvik Mackenzie Delta Mackenzie river permafrost |
genre_facet |
Aklavik Arctic Arctic Ocean Beaufort Sea Ice Inuvik Mackenzie Delta Mackenzie river permafrost |
op_source |
Earth System Science Data, 15 (4) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-15-1617-2023 http://hdl.handle.net/20.500.11850/592764 doi:10.3929/ethz-b-000592764 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/59276410.3929/ethz-b-00059276410.5194/essd-15-1617-2023 |
_version_ |
1768377090127691776 |