Decadal phase change in large-scale sea level and winds in the Indo-Pacific region at the end of the 20th century

Details Decadal phase change in large-scale sea level and winds in the Indo-Pacific region at the end of the 20th century Decadal phase change in large-scale sea level and winds in the Indo-Pacific region at the end of the 20th century

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3501605l&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 1, CiteID L01605

Other

10

Oceanography: Physical: Decadal Ocean Variability (1616, 1635, 3305, 4215), Oceanography: Physical: Sea Level: Variations And Mean (1222, 1225, 1641), Oceanography: General: Equatorial Oceanography, Oceanography: Physical: General Circulation (1218, 1222), Oceanography: General: Remote Sensing And Electromagnetic Processes (0689, 2487, 3285, 4455, 6934)

Scientific paper

Satellite observations of sea surface height (SSH) and wind stress for the period of 1993-2006 reveal a near-coherent large-scale decadal variability in much of the Indo-Pacific region with a phase change at the turn of the 20th century. Trade wind variations in the tropical Pacific and South Indian Ocean are anti-correlated with each other as are SSH differences across these two basins, implying anti-correlated variation of the subtropical cells in the two oceans. Decadal changes in large-scale SSH in the extra-tropics are mostly associated with well-defined patterns of wind stress curl indicating a near-coherent decadal variation in the strength of subtropical and subpolar gyres. Together, these variations reflect a linkage in the circulation of the Pacific and Indian Oceans via atmospheric and oceanic bridges. The phase change in the tropical Pacific tends to occur earlier than elsewhere, suggesting a potential role of the tropical Pacific in regulating decadal variability of the entire region.

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