Corrections for Pumped SBE 41CP CTDs Determined from Stratified Tank Experiments

Sea-Bird Scientific SBE 41CP CTDs are used on autonomous floats in the global Argo ocean observing program to measure the temperature and salinity of the upper ocean. While profiling, the sensors are subject to dynamic errors as they profile through vertical gradients. Applying dynamic corrections t...

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Bibliographic Details
Published inJournal of atmospheric and oceanic technology Vol. 36; no. 4; pp. 733 - 744
Main Authors Martini, Kim I., Murphy, David J., Schmitt, Raymond W., Larson, Nordeen G.
Format Journal Article
LanguageEnglish
Published Boston American Meteorological Society 01.04.2019
Subjects
Accuracy
Aquatic birds
Corrections
Drifters
Errors
Experiments
Floats
Heat transfer
Laboratories
Laboratory experiments
Oceans
Response time
Salinity
Seabirds
Seawater
Sensors
Temperature
Upper ocean
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Summary:Sea-Bird Scientific SBE 41CP CTDs are used on autonomous floats in the global Argo ocean observing program to measure the temperature and salinity of the upper ocean. While profiling, the sensors are subject to dynamic errors as they profile through vertical gradients. Applying dynamic corrections to the temperature and conductivity data reduces these errors and improves sensor accuracy. A series of laboratory experiments conducted in a stratified tank are used to characterize dynamic errors and determine corrections. The corrections are adapted for Argo floats, and recommendations for future implementation are presented.
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ISSN:0739-0572
1520-0426
DOI:10.1175/JTECH-D-18-0050.1