A continuous deep western boundary current between Abaco (26.5°N) and Barbados (13°N)

Rana A. Fine, Robert L. Molinari

Research output: Contribution to journalArticle

79 Scopus citations

Abstract

Chlorofluoromethane (F-11) and hydrographic data show that the Deep Western Boundary Current (DWBC) in the North Atlantic Ocean is a continuous feature of the mean circulation between Abaco (26.5°N) and Barbados (13°N). Two cores of high F-11 concentrations are coincident with the DWBC. The deep core located between 3200 and 4600 m transports North Atlantic Deep Water. The shallow core at 1000-1700 m and warmer than 4.1°θ transports recently formed Subpolar Mode Water. This water probably formed sometime during the 1960s and 1970s when there was reduced convection in the Labrador Sea. Classical LSW with a potential temperature of about 3.3°θ, which is found between 2000 and 3000 m, has a minimum in F-11 concentration because it has not been ventilated recently. A representative geostrophic transport for the DWBC below 1000 m is 8 × 106 m3 s-1.

Original languageEnglish (US)
Pages (from-to)1441-1450
Number of pages10
JournalDeep Sea Research Part A, Oceanographic Research Papers
Volume35
Issue number9
DOIs
StatePublished - Sep 1988

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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