The XBT Network
The XBT network consists of transects across all ocean basins where eXpendable BathyThermographs (XBTs) are used to collect temperature observations of the upper 1km of the ocean. The XBTs are deployed from research vessels and ships of the Ship Of Opportunity Program (SOOP).
The transects are sampled in two modes: High Density (HD) and Frequently repeated (FR). All XBT transects are reviewed through an international consortium with oversight by the SOOP Implementation Panel (SOOPIP). Some transects include time series with more than 30 years of data.