Water properties, heat and volume fluxes of Pacific water in Barrow Canyon during summer 2010
Date
2015-04-25Author
Itoh, Motoyo
Concept link
Pickart, Robert S.
Concept link
Kikuchi, Takashi
Concept link
Fukamachi, Yasushi
Concept link
Ohshima, Kay I.
Concept link
Simizu, Daisuke
Concept link
Arrigo, Kevin R.
Concept link
Vagle, Svein
Concept link
He, Jianfeng
Concept link
Ashjian, Carin J.
Concept link
Mathis, Jeremy T.
Concept link
Nishino, Shigeto
Concept link
Nobre, Carolina
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/7301As published
https://doi.org/10.1016/j.dsr.2015.04.004DOI
10.1016/j.dsr.2015.04.004Keyword
Polar oceanography; Arctic Ocean; Chukchi Sea; Heat fluxes; Volume transports; Water propertiesAbstract
Over the past few decades, sea ice retreat during summer has been enhanced in the Pacific sector of the Arctic basin, likely due in part to increasing summertime heat flux of Pacific-origin water from the Bering Strait. Barrow Canyon, in the northeast Chukchi Sea, is a major conduit through which the Pacific-origin water enters the Arctic basin. This paper presents results from 6 repeat high-resolution shipboard hydrographic/velocity sections occupied across Barrow Canyon in summer 2010. The different Pacific water masses feeding the canyon – Alaskan coastal water (ACW), summer Bering Sea water (BSW), and Pacific winter water (PWW) – all displayed significant intra-seasonal variability. Net volume transports through the canyon were between 0.96 and 1.70 Sv poleward, consisting of 0.41–0.98 Sv of warm Pacific water (ACW and BSW) and 0.28–0.65 Sv of PWW. The poleward heat flux also varied strongly, ranging from 8.56 TW to 24.56 TW, mainly due to the change in temperature of the warm Pacific water. Using supplemental mooring data from the core of the warm water, along with wind data from the Pt. Barrow weather station, we derive and assess a proxy for estimating heat flux in the canyon for the summer time period, which is when most of the heat passes northward towards the basin. The average heat flux for 2010 was estimated to be 3.34 TW, which is as large as the previous record maximum in 2007. This amount of heat could melt 315,000 km2 of 1-meter thick ice, which likely contributed to significant summer sea ice retreat in the Pacific sector of the Arctic Ocean.
Description
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Deep Sea Research Part I: Oceanographic Research Papers 102 (2015): 43-54, doi:10.1016/j.dsr.2015.04.004.
Collections
Suggested Citation
Deep Sea Research Part I: Oceanographic Research Papers 102 (2015): 43-54The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
Related items
Showing items related by title, author, creator and subject.
-
Multiple Opening and Closing Net Environmental Sampling System (MOCNESS) water filtering volumes from 2018 and 2019 taken in the Northern California Current waters.
Cowen, Robert K.; Sponaugle, Su; Sutherland, Kelly Rakow (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-02-26)Multiple Opening and Closing Net Environmental Sampling System (MOCNESS) water filtering volumes from 2018 and 2019 taken in the Northern California Current waters sampled aboard the R/V Sikuliaq, R/V Sally Ride and R/V ... -
Data constraints on glacial Atlantic Water mass geometry and properties
Oppo, Delia W.; Gebbie, Geoffrey A.; Huang, Kuo-Fang; Curry, William B.; Marchitto, Thomas M.; Pietro, Kathryn R. (John Wiley & Sons, 2018-09-27)The chemical composition of benthic foraminifera from marine sediment cores provides information on how glacial subsurface water properties differed from modern, but separating the influence of changes in the origin and ... -
The contribution of mosses to the carbon and water exchange of arctic ecosystems : quantification and relationships with system properties
Douma, J. C.; van Wijk, Mark T.; Lang, S. I.; Shaver, Gaius R. (2007-05-15)Water vapour and CO2 exchange were measured in moss dominated vegetation using a gas analyzer and a 1 m by 1 m chamber at 17 sites near Abisko, Northern Sweden and 21 sites near Longyearbyen, Svalbard, to quantify the ...