Equatorial Kelvin wave influences may reach the Bering Sea during 2002 to 2005

Details Equatorial Kelvin wave influences may reach the Bering Sea during 2002 to 2005 Equatorial Kelvin wave influences may reach the Bering Sea during 2002 to 2005

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3514607l&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 14, CiteID L14607

Physics

1

Oceanography: General: Equatorial Oceanography, Oceanography: Physical: Sea Level: Variations And Mean (1222, 1225, 1641), Oceanography: Physical: Planetary Waves, Oceanography: Physical: Enso (4922), Paleoceanography: El Nino (4522)

Scientific paper

The time-history of sea surface height (SSH) anomaly data from the TOPEX and Jason-1 altimeters is examined along the equator and northward following the west coast of the Americas. Along-track TOPEX and Jason-1 altimeter data are put into an alongshore-offshore coordinate system and then smoothed. This procedure increases the degrees of freedom in individual estimates of long-wavelength coastally trapped waves (CTWs) during times when both satellites are available (2002-2005). Equatorially trapped Kelvin waves are detected during the 2002-2003 El Niño. These Kelvin waves excite CTWs that travel northward along the west coast of the Americas. While CTWs associated with the 2002-2003 equatorial Kelvin waves are not always discernible along the entire coast, correlations of the coastal and equatorial SSH over the entire period of TOPEX and Jason-1 overlap show a clear phase progression. This phase progression implies remote influence of equatorial Kelvin waves that may reach as far north as the Bering Sea during the weak to moderate El Niño events that occurred from 2002 to 2005.

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