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North Atlantic Observing System Gerard McCarthy NERC/NOC

North Atlantic Observing System Gerard McCarthy NERC/NOC. NACLIM: An Overview. North Atlantic Climate European Commission Framework 7 Collaborative Project § Duration : 4 years + 3  Months, Oct. 2012 – Jan. 2017 §   Research Focus : Assessment of decadal climate forecasts

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North Atlantic Observing System Gerard McCarthy NERC/NOC

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  1. North Atlantic Observing System Gerard McCarthy NERC/NOC

  2. NACLIM: An Overview North Atlantic ClimateEuropean Commission Framework 7 Collaborative Project §Duration: 4 years + 3  Months, Oct. 2012 – Jan. 2017 §  Research Focus: Assessment of decadal climate forecasts §  Research Focus: Continuation of moored transport measurements §Partner: 18 participating institutions (+1 Third party) from 9 European countries 4 universities 12  research institutions 2 national operational institutes §5 Core themes, 12 work packages §Project costs: 11 M€ §EU contribution:   8.6 Mio M€

  3. Moored Observations in NACLIM • Greenland-Scotland Ridge • OSNAP family • Rekyannes ridge • 54ºN array • RAPID at 26ºN

  4. Long-term moorings: Greenland-Scotland Ridge • Greenland-Scotland Ridge: • Denmark Strait • Iceland-Faroe Atlantic inflow • Faroe-Shetland Channel • Faroe Bank Channel

  5. Denmark Straits • About half dense water overflow from Nordic Seas through Denmark Straits • Monitored since 1996 • Mean of 3.4 Sv(var: 2.0 Sv) • No trend Jochumsen et al., Variability of the Denmark Strait overflow: moored time series from 1996-2011, JGR Oceans, 2013 2006 1996 1998 2000 2002 2004 2010 2008

  6. Faroe-Bank Channel • Around 2 Sv of deep water through the FBC • Monitored since 1995 Hansen and Osterhus, Faroe Bank Channel overflow 1995–2005, Prog. Oc., 2007

  7. Faroe-Shetland Channel • 2.7±0.5Sv mean strength • Timseries from 1992 (combined moorings and altimetry) Berx et al., 2013, Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel.Oc. Sci.

  8. GSR totals • Total inflow across GSR is 7 Sv • Overflows (FBC+DS) is 6 Sv • No trend in transport • Noticeable increase in temperature 7.1 Sv +- 1 Sv Shetland branch Faroe branch Iceland branch

  9. NACLIM and OSNAP Rekjyannes Ridge The 53ºN array

  10. The 53ºN Array Located at exit of Labrador Sea Joint Canadian (C1-C3,K7), US (K7) and German NACLIM PI: Johannes Karstensen (GEOMAR)

  11. Rejkyannes Ridge 4 moorings on west flank of the RR Will be deployed this year (1 year delayed) for 3 times 1 year measuring velocities, T and C NACLIM PI Laura de Steur (NIOZ)

  12. NACLIM and OSNAP • 53ºN Array (J. Karstensen-GEOMAR) • Rekjyannes Ridge (L. De Steur-NIOZ) • Extras: Labrador sea mooring; SAMS activities Rekjyannes Ridge The 53ºN array

  13. NACLIM Extras • Predictability of ocean surface state: • the SST in the Nordic Seas • Predictability of the atmosphere • Sea-ice and snowfall • Polar lows • Impact on the oceanic ecosystem • e.g. blue whiting catches and sub-polar gyre • Impact on urban societies • Urban heat islands • Data management and outreach

  14. The research leading to these results has received funding from the European Union 7th Framework Programme (FP7 2007-2013), under grant agreement n.308299 NACLIM www.naclim.eu

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