Heat flux variations in the eastern Norwegian Atlantic Current toward the Arctic from moored instruments, 1995-2005

Details Heat flux variations in the eastern Norwegian Atlantic Current toward the Arctic from moored instruments, 1995-2005 Heat flux variations in the eastern Norwegian Atlantic Current toward the Arctic from moored instruments, 1995-2005

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3214610o&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 14, CiteID L14610

Physics

15

Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Oceanography: Physical: Currents, Oceanography: Physical: Eastern Boundary Currents, Oceanography: Physical: General Circulation (1218, 1222)

Scientific paper

An extraordinary warming of the Atlantic inflow to the Norwegian Sea toward the Arctic is observed over the last decade. In light of that we investigate the seasonal and interannual variations of the heat flux in the eastern Norwegian Atlantic Current (NwASC) using moored temperature (T)- and current (v) measurements in the Svinøy section (62°N) 1995-2005. By splitting the heat flux anomaly (vT)' into v'$\overline{T and $\overline{vT' ($\overline{T, $\overline{v: 10-year means; v'T' negligible), we examine the relative contributions from variations in v and T. The dominating seasonal signal coincides almost completely with v'$\overline{T, whilst $\overline{vT' has a minor modulating effect. On the interannual timescale the heat-flux anomaly also coincides with v'$\overline{T, while $\overline{vT' contributes significantly to the long term trend. There is a downward 10-year trend in the velocity field of 3.9 cm s-1 (12%), combined with a 1°C increase in temperature, resulting in a constant heat flux.

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