Conductivity-Temperature-Depth (CTD) sensors, a mainstay of ocean observing, are routinely deployed from ships and fitted to autonomous instrument systems including moorings, profiling floats, gliders and AUVs. A recently-developed CTD sensor from D-2, Inc. is described and performance assessments based on laboratory calibration work and observations piggy- backed on research cruises are reviewed. The ocean observations were implemented using self-contained controller/data logger/battery units developed for this project; this subsystem is also documented. The work concludes with a discussion of further envisioned refinements to the CTD.
Conductivity, Temperature Depth (CTD) sensor, sea water salinity, physical oceanography.
This video has a supporting paper published with the data presented: Continued Development and Evaluation of the D-2 Inc. Hybrid CTD Sensor
CTD Product Page: https://www.d-2.com/?page_id=861