RITS/CO2 1989, Leg 3

The final leg of the 1989 cruise began 7 April (Day 97) from Tahiti and ended 20 April (Day 110) in Seattle.

Atmospheric f(CO2) values were 334 µatm in the southern hemisphere and rose to a high of 350 µatm approaching Seattle. Surface seawater values were oversaturated from Tahiti, and peaked at 440 µatm just south of the equator (2° S), dropping to saturation near 14° N. Seawater remained near- or under-saturated from 14° N and dropped sharply on the approach to coastal waters. The mean percent standard deviation of the standard gases on this leg was 0.37%.

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