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Field Notes 2004

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Step 3: CTD cast
The CTD is attached to the winch cable and lowered to about 500 m. It’s then brought back up to the surface. The data it records are stored in the instrument to be downloaded when we return to Alert at the end of the day. From the CTD we obtain profiles of salinity, temperature, and oxygen.

Polar Science Center
Applied Physics Laboratory
1013 NE 40th Street
Seattle, WA 98105

University of Washington

This material is based upon work supported by the National Science Foundation under Grant No. 0230427.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the
National Science Foundation.

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