Other
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..739l&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 6, p. 739-742
Other
11
Oceanography: Physical: Upper Ocean Processes, Oceanography: General: Climate And Interannual Variability, Global Change: Climate Dynamics, Information Related To Geographic Region: Pacific Ocean
Scientific paper
Two types of anomaly pathways associated with decadal thermocline variability in the North Pacific Ocean are identified on constant density surfaces (isopycnals): one westward and the other southwestward around the subtropical gyre. A theory, based on two baroclinic planetary wave modes in the thermocline, is proposed to account for the observed variability pattern. The variability along the westward wave path is ascribed to the non-Doppler-shift 1st mode and seems to be forced mainly by wind stress forcing; the anomaly along the southwestward subduction path is associated with the advective nature of the 2nd mode and could be excited mainly by surface buoyancy anomalies. This study may provide a dynamically unified, three-dimensional picture of decadal thermocline variability in the North Pacific Ocean.
Liu Zhengyu
Zhang Rong-Hua
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