Journal of Oceanography

, Volume 60, Issue 2, pp 253–258

Stability of Temperature and Conductivity Sensors of Argo Profiling Floats

  • Eitarou Oka
  • Kentaro Ando


After recalibration of the temperature and conductivity sensors of three Argo profiling floats recovered after operations for four to nine months, the results indicate that the floats basically showed no significant drift, either in temperature or salinity, and adequately fulfilled the accuracy requirement of the Argo project (0.005°C for temperature and 0.01 psu for salinity). Only the third float showed a significant offset in salinity of about −0.02 psu, as expected from comparison between the float data and the shipboard conductivity-temperature-depth data. This offset was caused by the operational error of the PROVOR-type float, in which the surface water was pumped immediately after the launch, fouling the conductivity sensor cell.

Argo project profiling float sensor stability 


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Copyright information

© The Oceanographic Society of Japan 2004

Authors and Affiliations

  • Eitarou Oka
    • 1
  • Kentaro Ando
    • 2
  1. 1.Frontier Observational Research System for Global ChangeKanagawaJapan
  2. 2.Japan Marine Science and Technology CenterKanagawaJapan

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