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Conference Paper

Winter Arctic outflow winds cause upper ocean cooling and reoxygenation in a temperate Canadian fjord

Authors

Jackson,  Jennifer
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Klymak,  Jody
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Holmes,  Keith
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hannah,  Charles
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hare,  Alex
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Bianucci,  Laura
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Floyd,  Bill
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Evans,  Wiley
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Wan,  Di
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Jackson, J., Klymak, J., Holmes, K., Hannah, C., Hare, A., Bianucci, L., Floyd, B., Evans, W., Wan, D. (2023): Winter Arctic outflow winds cause upper ocean cooling and reoxygenation in a temperate Canadian fjord, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3567


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020413
Abstract
Arctic outflow or gap winds in British Columbia bring cold air from the continent to the coastline through mountain passes. Using observational data and a 2-D model, we show that a February 2019 outflow event caused the 100 m in Bute Inlet (within the traditional territory of the Homalco Nation) to cool by as much as 1.9℃ and gain as much as 4.1 mLL-1 of oxygen. The impact of the outflow winds persisted for almost 1 year within the 1023 to 1023.5 kgm-3 isopycnal range. Atmospheric data from 1929 to 2022 and oceanographic data from 1951 to 2022 were examined and a statistically significant relationship between continental air temperature at Tatlayoko Lake and temperature and oxygen in Bute Inlet was observed. This local negative feedback that counters some of the effects of climate change could create a biological refugia as surrounding waters warm and lose oxygen at a faster rate.