The Bermuda Atlantic Time-series Study
) is a long-term oceanographic
study by the Bermuda Institute of Ocean Sciences
(BIOS). Based on regular (monthly or better) research cruises
, it samples an area of the western Atlantic Ocean
nominally at the coordinates
. The cruise programme routinely samples physical properties such as ocean temperature
, but focuses on variables of biological
interest including: nutrients
and silicic acid
), dissolved inorganic carbon
, primary production
and sediment trap flux
. The BATS cruises began in 1988 but are supplemented by biweekly Hydrostation "S"
cruises to a neighbouring location that began in 1954. The data collected by these cruises are available online.