Abstract
In recent years a number of large scale modes of Southern
Hemisphere climate variability have been observed, most
notably the Southern Annular Mode (SAM, e.g. Thompson and
Solomon, 2002), the Pacific South American modes (PSA, e.g.
Mo and Peagle, 2001), the Antarctic Dipole (e.g. Martinson and
Ianuzzi, 2003), the Antarctic Circumpolar Wave (e.g. White and
Peterson, 1996), and of course the El Niño Southern Oscillation
(ENSO). All have pronounced effects over or in the Southern
Ocean, and may be expected to account for a significant part
of the interannual variability observed there. Most studies
analyse these phenomena from a large-scale point of view, often
by extracting modes from Southern Hemisphere atmospheric
and oceanic fields using various mathematical techniques. In
this study we have taken an alternative approach, and tried
to understand the causes of the full ocean depth variability in
Drake Passage observed in the WOCE SR1b repeat hydrographic
sections (Cunningham et al. 2003).
Original language | English |
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Pages (from-to) | 27-29 |
Number of pages | 3 |
Journal | CLIVAR Exchanges |
Volume | 10 |
Issue number | 4 |
Publication status | Published - 2005 |