Wind driven seasonal Wind driven seasonal variations in the transport variations in the transport of NAW through the Faroe- of NAW through the Faroe- Shetland Channel Shetland Channel also acknowledge: • European Commission (MOEN – ASOF EU-E, Framework V) Toby Sherwin Scottish Association for Marine Science, Oban Acknowledgements: Bill Turrell, Sarah Hughes, Bee Berx (Marine Scotland), Bogi Hansen (FFL), Svein Østerhus (UiB) based on: Sherwin, T.J., Hughes, S.L., Turrell, W.R., Hansen, B., Østerhus, S., 2008. Wind- driven monthly variations in transport and the flow field in the Faroe–Shetland Channel, Polar Research 27 (1), 7-22. Sherwin, T.J., Williams, M.O., Turrell, W.R., Hughes, S.L., Miller, P.I., 2006. A description and analysis of mesoscale variability in the Faroe-Shetland Channel. JGR 111, ISI:000235995000002 (C3).
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Wind driven seasonal variations in the transport of NAW through the Faroe-Shetland Channel also acknowledge: European Commission (MOEN – ASOF EU-E, Framework.
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Wind driven seasonal variations Wind driven seasonal variations in the transport of NAW through in the transport of NAW through
the Faroe-Shetland Channelthe Faroe-Shetland Channel
also acknowledge:
• European Commission (MOEN – ASOF EU-E, Framework V)
Toby SherwinScottish Association for Marine Science, Oban
Acknowledgements: Bill Turrell, Sarah Hughes, Bee Berx (Marine Scotland), Bogi Hansen (FFL), Svein Østerhus (UiB)
based on:
Sherwin, T.J., Hughes, S.L., Turrell, W.R., Hansen, B., Østerhus, S., 2008. Wind-driven monthly variations in transport and the flow field in the Faroe–Shetland Channel, Polar Research 27 (1), 7-22.
Sherwin, T.J., Williams, M.O., Turrell, W.R., Hughes, S.L., Miller, P.I., 2006. A description and analysis of mesoscale variability in the Faroe-Shetland Channel. JGR 111, ISI:000235995000002 (C3).
Bathymetry of the Faroe – Shetland Channel
8 7 6 5 4 3 2 1 0
Longitude (w )
60
60
61
61
62
62
63La
titud
e
AB
CDE
Faroe
ShetlandsFIM1
15
NSDW +
NAWMNAW
THE PROBLEM OF MESOSCALE VARIABILITY
Velocities and transport in the NAW at 4 ADCPs
From different methodologies:
Hughes et al., (2006) mean NAW transport = 4.0 Sv (trend ~ -0.1 Sv per annum)
Sherwin et al,. (2008) mean NAW transport = 3.5 Sv±0.1 Sv (2.1 Sv barotropic, 1.4 Sv baroclinic)