Variability in the Slope Water and its relation to the Gulf Stream path
Authors:
- 6 February 2008
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 35 (3)
Abstract
Sea Surface Temperature (SST) and Sea Surface Height (SSH) data for 1993–2007 for the North Atlantic are combined with hydrographic data at 69W to investigate the relation between the Gulf Stream (GS) position and the Slope Water properties. SST anomalies north of the GS are correlated with changes in its path. The lag of this correlation is such that positive temperature anomalies precede northward shifts of the GS, and suggests that SST anomalies move westward with speeds of several cm/s. EOF analysis of the SST and SSH fields shows that cooling and strengthening of the SW flow are in phase over the Slope Water, which is mirrored in the vertical structure of these fields at 69W, indicating larger transports in the Deep Western Boundary Current lead to southward shifts of the mean GS path. This relation between the Slope Water and the GS path provides some predictability for the latter.Keywords
This publication has 23 references indexed in Scilit:
- The Turbulent Oscillator: A Mechanism of Low-Frequency Variability of the Wind-Driven Ocean GyresJournal of Physical Oceanography, 2007
- A study of the currents of the outer shelf and upper slope from a decade of shipboard ADCP observations in the Middle Atlantic BightJournal of Geophysical Research: Oceans, 2006
- On the Deep Western Boundary Current south of Cape CodDeep Sea Research Part II: Topical Studies in Oceanography, 2005
- Decline of Subpolar North Atlantic Circulation During the 1990sScience, 2004
- Seasonal and interannual variations in geostrophic velocity in the Middle Atlantic BightJournal of Geophysical Research: Oceans, 2003
- Gulf Stream Variability and Ocean–Atmosphere Interactions*Journal of Physical Oceanography, 2001
- The Relation between Decadal Variability of Subtropical Mode Water and the North Atlantic Oscillation*Journal of Climate, 2000
- Lagrangian Observations of the Deep Western Boundary Current in the North Atlantic Ocean.Journal of Physical Oceanography, 2000
- A Numerical Study of the Variability and the Separation of the Gulf Stream, Induced by Surface Atmospheric Forcing and Lateral Boundary FlowsJournal of Physical Oceanography, 1992
- The Effect of the New England Seamounts on Gulf Stream Meandering as Observed from Satellite IR ImageryJournal of Physical Oceanography, 1986