| Summary: | Statement: XBT data is collected from the volunteer observing ships and returned to CMAR. We then convert the data into our netcdf format and perform quality control on temperature, rejecting data that shows sign of instrument faults or other anomalies that are not considered 'real'. Any real features of the profile are flagged as well and these flags can be used to study the occurrence of such features (inversions, fine structure, 'steps', etc). The quality control system is based on Matlab and called Mquest. Credit Australia’s Integrated Marine Observing System (IMOS) is enabled by the National Collaborative Research Infrastructure Strategy (NCRIS). It is operated by a consortium of institutions as an unincorporated joint venture, with the University of Tasmania as Lead Agent. Credit CSIRO Marine and Atmospheric Research (CMAR) Temperature data from the TOGA/WOCE transect IX28 across the Southern Ocean has been collected since 1992 and are ongoing. The transect is repeated approximately 6 times a year in the Austral summer, with profiles obtained approximately every 10-50 Km. The data are obtained from XBTs (expendable bathythermographs) deployed by the French Antarctic resupply vessel L'Astrolabe, and are managed by the French Polar Institute (IPEV) and the Joint Australian Facility for Ocean Observing Systems (JAFOOS), a collaborative venture between CSIRO Marine Research and the Bureau of Meteorology Research Centre (BMRC).
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