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Bermuda's tale of two time series: Hydrostation S and BATS


Phillips, HE and Joyce, T, Bermuda's tale of two time series: Hydrostation S and BATS, Journal of Physical Oceanography, 37, (3) pp. 554-571. ISSN 0022-3670 (2007) [Refereed Article]

DOI: doi:10.1175/JPO2997.1


This paper describes the oceanic variability at Bermuda between 1989 and 1999, recorded in two overlapping hydrographic time series. Station S and Bermuda Atlantic Time Series Study (BATS), which are 60 km apart, both show that a multidecadal trend of deep warming has reversed, likely as a result of the increased production of Labrador Sea Water since the early 1980s. In addition to recording similar changes in watermass properties, the two time series show similar mean vertical structure and variance as a function of pressure for temperature, salinity, and density above 1500 dbar. The seasonal cycles of these water properties at the two sites are statistically indistinguishable. The time series differ in the individual eddy events they record and in their variability below 1500 dbar. The two time series are used to investigate the propagation of eddy features. Coherence and phase calculated from the low-mode variability of density show westward propagation at ∼3 cm s-1 of wavelengths around 300-500 km. Satellite altimeter data are used to provide a broader spatial view of the eddy (or wave) field near Bermuda. © 2007 American Meteorological Society.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical oceanography
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Climate variability (excl. social impacts)
UTAS Author:Phillips, HE (Associate Professor Helen Phillips)
ID Code:44136
Year Published:2007
Web of Science® Times Cited:19
Deposited By:IASOS
Deposited On:2007-08-01
Last Modified:2008-05-19

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