Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3519602f&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 19, CiteID L19602
Physics
5
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: Oceans (1616, 3305, 4215, 4513), Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Oceanography: Physical: Decadal Ocean Variability (1616, 1635, 3305, 4215)
Scientific paper
Sub-surface signatures of the Atlantic Multidecadal Oscillation (AMO) are identified using expendable bathythermograph (XBT) measurements of temperature from the surface down to a depth of 400 m. Basin averaged temperature anomalies in the North Atlantic at different depths display multidecadal variability with a phase shift between temperature anomalies at the surface and at depth. Westward propagation of temperature anomalies is observable at depth and there is a lag correlation between east-west and north-south temperature gradients, with the east-west temperature gradient leading. These sub-surface characteristics of the AMO agree with those expected from the noise-driven internal ocean mode view of the AMO, as derived from a hierarchy of ocean-atmosphere models.
der Heydt Anna von
Dijkstra Henk A.
Frankcombe L. M.
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