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Cynthia Dumousseaud (NOCS)
I am a student at the National Oceanography Centre of Southampton, and I am interested in the chemistry of CO2 in sea water. Due to increasing atmospheric concentration of CO2 since the industrial revolution, the pH of seawater is decreasing. It is important to understand how the exchange of CO2 between the atmosphere and the ocean affects the chemistry and the biology of the ocean. My work is thus focused on Ocean Acidification, and I am measuring the pH of sea water, but also Dissolved Inorganic Carbon (DIC), and Total Alkalinity (TA). On this cruise I am measuring pH of sea water continuously from the underway supply of the ship (approximately 5 meters depth) with a pH measurement in average every minute, and on two different systems (potentiometric and spectrophotometric). I will also take discrete underway and CTD samples, for DIC and TA measurements, which I will be analyzing back to NOCS. |
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