The water depth and temperature data were collected from UK ships CHALLENGER, DISCOVERY, DARWIN, FLEETWOOD, LIMA, OCEAN WEATHER STATION, and UNKNOWN PLATFORMS between July, 1988 and July, 1991. The originator's bathythermograph (XBT) data containing 557 profiles were submitted on a tape by P. Horsburgh, Hydro Department, Birkenhead, UK. The data have been converted and are now available on line in C116 (XBT) file format of NODC. The data type C116 contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data record was comprised of pairs of temperature-depth values. The XBT data files contained temperature values at non-uniform depths. These depths were recorded at the minimum number of points ("inflection points") required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. With special instruments, measurements can be obtained to 1830 m.

The water depth and temperature data was collected using over 45 different ships from August 1947 to October 1983. The originator's bathythermograph (XBT) data was submitted in a tape containing 7,537 observations by Ted Dalzell of Hydro Department, Birkenhead, Merseyside, United Kingdom. The data has been converted and is now available on line in C116-Bathythermograph-XBT and C128-Bathythermograph-MBT file formats of NODC.

The water depth and temperature data were collected from ships CHARLES DARWIN, CLYDE-OWS LIMA, DISCOVERY, and OCEAN WEATHER STATION L between August 24 1987 and November 2, 1992. The originator's bathythermograph (XBT) data containing three files with 1,697 observations were submitted on a diskette by Mr. M. Sawyer, Hydro Department, UK to NODC.

The water depth and temperature data was collected from five ships by the Australian and New Zealand Navy. The data was collected between August 1, 1993 and March 29, 1995. The originator's 267 analog bathythermograph (XBT) traces were submitted by Mr. Andrew L. Walsh to NODC.

The water depth and temperature data was collected from multiple ships by the Australian Navy. The data was collected from 1978-1991. The originator's analog bathythermograph (XBT) data was submitted in a box along with eight cassette tapes by Mr. Ben J. Searle. The data has been converted and is now available on line in C116 file format of NODC.

The accession contains Bathythermograph XBT and MBT data in C116 and C128 format. The data spans a period from August 1943 to April 1990. The data is a compilation of unprocessed XBT data submitted by UK in accession numbers 7601931, 7800266 and 8700346.

Data has been processed by NODC to the NODC standard Bathythermograph (MBT) (C128) and Bathythermograph (XBT) (C116) formats. The C116/C118 format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained temperature values at non-uniform depths. These depths were recorded at the minimum number of points ("inflection points") required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB. The C128 format is used for temperature-depth profile data obtained using the mechanical bathythermograph (MBT) instrument. The maximum depth of MBT observations is approximately 285 m. Therefore, MBT data are useful only in studying the thermal structure of the upper layers of the ocean. Cruise information, date, position, and time are reported for each observation. The data record comprises pairs of temperature-depth values. Temperature data in this file are recorded at uniform 5 m depth intervals.

The bathythermograph data in this accession were collected using six different ships between November 2, 1990 and December 2, 1991. The real time data of water temperature at varying depth bathythermograph (XBT) was recorded by the US Navy. The data was submitted to NODC by Fleet Numerical Oceanography Center, Monterey CA. The XBT data has been digitized and is present in the current NODC data storage system in C116 file format.

The data in this accession were collected in 26 cruises conducted using multiple ships over a decade between August 1980 to July 1991. The real time data of water temperature at varying depth bathythermograph (XBT) was recorded in stripcharts by the US Navy. One box of analog stripcharts and radio logs were submitted to NODC by Mr. Paul Stevens of Fleet Numerical Oceanography Center, Monterey CA. The XBT data from these stripcharts have been digitized and are present in the current NODC data storage system in C116 file format.

Data has been processed by NODC to the NODC standard Bathythermograph (XBT) (C116) format. The C116/C118 format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained temperature values at non-uniform depths. These depths were recorded at the minimum number of points ("inflection points") required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB.