Bermuda’s tale of two time series : Hydrostation S and BATS
Phillips, Helen E.
Joyce, Terrence M.
MetadataShow full item record
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.
Author Posting. © American Meteorological Society, 2007. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 37 (2007): 554–571, doi:10.1175/JPO2997.1.
Showing items related by title, author, creator and subject.
Numerical investigations of seasonal and interannual variability of North Pacific Subtropical Mode Water and its implications for Pacific climate variability Davis, Xujing Jia; Rothstein, Lewis M.; Dewar, William K.; Menemenlis, Dimitris (American Meteorological Society, 2011-06-01)North Pacific Subtropical Mode Water (NPSTMW) is an essential feature of the North Pacific subtropical gyre imparting significant influence on regional SST evolution on seasonal and longer time scales and, as such, is an ...
Decadal variability of the upper ocean heat content in the East/Japan Sea and its possible relationship to northwestern Pacific variability Na, Hanna; Kim, Kwang-Yul; Chang, Kyung-Il; Park, Jong Jin; Kim, Kuh; Minobe, Shoshiro (American Geophysical Union, 2012-02-09)The upper ocean heat content variability in the East/Japan Sea was investigated using a 40 year temperature and salinity data set from 1968 to 2007. Decadal variability was identified as the dominant mode of variability ...
Trend and interannual variability in southeast Greenland Sea Ice : impacts on coastal Greenland climate variability Moore, G. W. K.; Straneo, Fiamma; Oltmanns, Marilena (John Wiley & Sons, 2014-12-02)We describe the recent occurrence of a region of diminished sea ice cover or “notch” offshore of the Kangerdlugssuaq Fiord, the site of the largest tidewater glacier along Greenland's southeast coast. The notch's location ...