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University of Bergen Ingunn Skjelvan, Siv Lauvset, Truls Johannessen
SA 3 Station M - Norwegian Sea pH and pCO2 time series for ocean acidification estimates University of Bergen Ingunn Skjelvan, Siv Lauvset, Truls Johannessen General Assembly 2017 Vilanova i la Geltrú, Spain; 27 – 29 June 2017
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Station M 66°N 2°E in the Norwegian Atlantic Current +0.15C /
S. Österhus +0.15C / 35 years
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Station M Deep mooring T S pH pCO2 O2 Surface buoy T S pH pCO2 (sea & air) Chl-a O2
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Surface SA 3 - Station M Increasing amount of CO2 CO2 undersaturation
WP 10 – Service Activities Surface Increasing amount of CO2 CO2 undersaturation Sink for atmospheric CO2 ocean uptake
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Ocean Acidification Atmosphere Ocean i.e. 26% more acidic ocean Ocean
WP 10 – Service Activities Atmosphere Ocean < 0,1 pH units i.e. 26% more acidic ocean Ocean CO32- (carbonate) used in skeletons and shells in marine organisms degree of CO32- saturation < 1 carbonate corrosion
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Surface SA 3 - Station M Ocean Acidification …
WP 10 – Service Activities Surface Ocean Acidification … yr-1 … at a faster speed than the global mean degree of CO32- saturation -0.02 yr-1
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Sub-surface SA 3 - Station M 150 m depth 200 m depth
WP 10 – Service Activities Sub-surface degree of CO32- saturation degree of CO32- saturation CO32- oversaturation CO32- undersaturation 150 m depth 200 m depth
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