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Temperature profile data collected using BT and XBT from NOAA Ship RESEARCHER and other platforms in the Philippine Sea from 1971-10-06 to 1979-09-21 (NCEI Accession 8000151)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 29, 2026 at 09:59 PM | Dataset Last Updated: September 28, 2022 at 12:00 AM
Temperature profile data were collected using XBT and BT casts from NOAA Ship RESEARCHER and other platforms in Philippine Sea from 06 October 1971 to 21 September 1979. Data were processed by NODC to the NODC standard Universal Bathythermograph Output (UBT) format. The UBT file format is used for temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Standard XBTs can obtain profiles at depths of about 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Cruise information, position, date, and time are reported for each observation. The data record comprises pairs of temperature-depth values. Unlike the MBT data file, in which temperature values are recorded at uniform 5m intervals, the XBT Data File contains temperature values at non-uniform depths. These depths are at a minimum number of points ("inflection points") required to record the temperature curve to an acceptable degree of accuracy. On output, however, the user may request temperature values either at inflection points or interpolated to uniform depth increments.

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