Canadian oxygen measurements on Argo floats

D. Gilbert, H. Freeland, A. Tran

Direction des Sciences Océaniques
Institut Maurice-Lamontagne
Pêches et Océans Canada
850 route de la Mer
Mont-Joli, Québec
Canada, G5H 3Z4

The unprecedented spatial coverage of the Argo array offers the opportunity to measure other oceanographic parameters for which reliable sensors with low power requirements can be mounted on the floats. In 2004, Canada deployed four APEX floats equipped with Aanderaa's optode oxygen sensor : one in the northwest Atlantic Slope Water, one in the Labrador Sea, and two in the Gulf of Alaska. We will report on nearly two years of oxygen data from these floats, discussing issues of sensor response time, calibration accuracy and drift.