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The North Atlantic in an era of global change

The North Atlantic in an era of global change. Bogi Hansen Faroe Marine Research Institute. Cars. Deforestation. Factories. Oil platforms. The Earth. The Earth. s hould b e warming. and it is. CO 2 and other greenhouse gases from human activity.

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The North Atlantic in an era of global change

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  1. The North Atlantic in an era of global change Bogi Hansen Faroe Marine Research Institute

  2. Cars Deforestation Factories Oil platforms

  3. The Earth The Earth should be warming and it is

  4. CO2and other greenhouse gases from human activity Global average surface air temperature (IPCC-2007) 2100: + 4ºC ? ºC 14.5 14.0 Natural forces, only 13.5 1850 1900 1950 2000 1950 1900 1850 2000

  5. Projected surface warming 2080-2099 for A2 scenario (IPCC 2007) North Atlantic 2 – 3 ºC warming ºC

  6. Annual mean surface temperature 5ºC NOAA

  7. North Atlantic currents STG SPG

  8. Surface temperature last five years (2006-2010) above the period (1951-1980)

  9. Annual increase (1985-2008) of extreme wave height 15-20% more frequent

  10. Whither the fish With warming, fish stocks should move northwards But, changing currents may be more important ?

  11. The marine ecosystem Artist:Glynn Gorick King Cod

  12. Atmosphere Rain Clouds Wind What will happen to King Cod ? Air temperature Light Temperature & Currents ?

  13. Ocean acidification CO2 H2CO3 - HCO3 + H+ - - CO3 + 2H+

  14. The sea surface has become more acidic since the Industrial revolution +25% Increased concentration of H+

  15. Coldwater corals

  16. How living conditions in the North Atlantic will be We don’t know But, they will change and continue to change

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