sample this underway seawater. In addition to this sampling, some instruments can run continuously, like pCO2 and pH( in our lab), and fluorescence, temperature, salinity( which are measured on the clean sea-water supply by the ship’ s instruments).
Display showing the changes over the last two hours in water temperature, salinity, fluorescence and transmittance measured at the sea-water input. When this was photographed the water temperature( purple) was fluctuating by about one degree centigrade, probablybecause we were passing numerous icebergs.
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