Upwelling of Atlantic Water in Barrow Canyon, Chukchi Sea ...

• Main Author: Li, Shutong
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Barrow Canyon; Chukchi Sea; Chukchi; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-3853; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020692

<!--!introduction!--> Using long-term moorings data together with wind and sea ice measurements, we document the characteristics and variations of upwelling in Barrow Canyon and investigate the upwelled Atlantic Water (AW) on the Chukchi Sea shelf and how it impacts the ice cover. Driven by strong northeasterly winds, upwelling occurs more often in the cold months, and the occurrence tends to increase interannually since 2001. Over the 12-year mooring record at the mouth of Barrow Canyon, roughly 10% of the upwelling events can drive AW onto the Chukchi Sea shelf. Both AW and non-AW upwelling events have more occurrence and stronger strength in the cold months, but do not present a significant interannual trend. These variations are associated with the northeasterly winds. Comparing to the non-AW upwelling, the AW upwelling is generally characterized by more vertical displacement of the AW layer at the mouth of Barrow Canyon, and stronger up-canyon volume and heat transport. In the ice-covered period, ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...