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Ocean Science An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 1
Ocean Sci., 3, 59–75, 2007
https://doi.org/10.5194/os-3-59-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Mediterranean Ocean Forecasting System: toward environmental...

Ocean Sci., 3, 59–75, 2007
https://doi.org/10.5194/os-3-59-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  08 Feb 2007

08 Feb 2007

Factors affecting the quality of XBT data – results of analyses on profiles from the Western Mediterranean Sea

F. Reseghetti1, M. Borghini2, and G. M. R. Manzella3 F. Reseghetti et al.
  • 1ENEA-ACS-CLIM-MED, Forte S. Teresa – Pozzuolo di Lerici, 19032 Lerici (Sp), Italia
  • 2CNR-ISMAR, Sez. Oceanografia Fisica, Forte S. Teresa – Pozzuolo di Lerici, 19032 Lerici (Sp), Italia
  • 3ENEA-ACS, Forte S. Teresa – Pozzuolo di Lerici, 19032 Lerici (Sp), Italia

Abstract. EXpendable BathyThermograph (XBT) temperature profiles collected in the framework of the Mediterranean Forecasting System – Toward Environmental Prediction (MFS-TEP) project have been compared with CTD measurements. New procedures for the quality control of recorded values have been developed and checked. Some sources of possible uncertainties and errors, such as the response time of the apparatus (XBT probe, thermistor and readout chain), or the influence of initial conditions are also analysed. To deal with the high homogeneity of Mediterranean waters, a new technique to compute the fall rate coefficients, that give a better reproduction of the depth of thermal structures, has been proposed, and new customized coefficients have been calculated. After the application of a temperature correction, the overall uncertainties in depth and in temperature measurements have been estimated.

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