期刊
JOURNAL OF PHYSICAL OCEANOGRAPHY
卷 41, 期 3, 页码 429-436出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/2010JPO4536.1
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资金
- Arctic Observing Network [OPP0230381, OPP0632231]
- Department of Fisheries and Oceans, Canada
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1022472] Funding Source: National Science Foundation
Davis Strait volume [-2.3 +/- 0.7 Sv (1 Sv equivalent to 10(6) m(3) s(-1)); negative sign indicates southward transport], freshwater (-116 +/- 41 mSv), and heat (20 +/- 9 TW) fluxes estimated from objectively mapped 2004-05 moored array data do not differ significantly from values based on a 1987-90 array but are distributed differently across the strait. The 2004-05 array provided the first year-long measurements in the upper 100 m and over the shelves. The upper 100 m accounts for 39% (-0.9 Sv) of the net volume and 59% (-69 mSv) of the net freshwater fluxes. Shelf contributions are small: 0.4 Sv (volume), 15 mSv (freshwater), and 3 TW (heat) from the West Greenland shelf and -0.1 Sv, -7 mSv, and 1 TW from the Baffin Island shelf. Contemporaneous measurements of the Baffin Bay inflows and outflows indicate that volume and freshwater budgets balance to within 26% and 4%, respectively, of the net Davis Strait outflow. Davis Strait volume and freshwater fluxes nearly equal those from Fram Strait, indicating that both are significant Arctic freshwater pathways.
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