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  • American Geophysical Union (AGU)  (2)
  • 2000-2004  (2)
  • 2001  (2)
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  • American Geophysical Union (AGU)  (2)
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  • 2000-2004  (2)
Year
  • 2001  (2)
  • 1
    Online Resource
    Online Resource
    Why the properties of El Niño changed during the late 1970s
    American Geophysical Union (AGU) ; 2001
    In:  Geophysical Research Letters Vol. 28, No. 19 ( 2001-10), p. 3709-3712
    Details
    In: Geophysical Research Letters, American Geophysical Union (AGU), Vol. 28, No. 19 ( 2001-10), p. 3709-3712
    Abstract: Following the abrupt North Pacific climate shift in the mid‐1970s, the period, amplitude, spatial structure, and temporal evolution of the El Niño notably changed. Theory is needed to explain why the coherent changes in several El Niño characteristics are nearly synchronized with the decadal climate shift. While the decadal variation in the equatorial thermocline could potentially change El Nino behavior, observation indicates that from the pre‐shift (1961–1975) to the post‐shift (1981–1995) period the change of equatorial eastern Pacific thermocline is insignificant. Our numerical experiments with a coupled atmosphere‐ocean model illustrate that the observed changes in ENSO properties may be attributed to decadal changes in the surface winds and associated ocean surface layer dynamics without changes in the mean thermocline. A theoretical analysis is presented to elucidate the mechanisms by which the decadal variations in winds and upwelling modify the structure and propagation of the El Niño and amplify and prolong the El Niño‐La Niña cycle.
    Type of Medium: Online Resource
    ISSN: 0094-8276 , 1944-8007
    URL: Article
    DOI: 10.1029/2001GL012862
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2001
    detail.hit.zdb_id: 2021599-X
    detail.hit.zdb_id: 7403-2
    SSG: 16,13
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Tropical Pacific basin‐wide adjustment and oceanic waves
    American Geophysical Union (AGU) ; 2001
    In:  Geophysical Research Letters Vol. 28, No. 20 ( 2001-10-15), p. 3975-3978
    Details
    In: Geophysical Research Letters, American Geophysical Union (AGU), Vol. 28, No. 20 ( 2001-10-15), p. 3975-3978
    Abstract: This study examines the basin‐wide adjustment process associated with El Niño‐Southern Oscillation (ENSO) in terms of oceanic waves using the Cane‐Zebiak model. The Rossby waves induce not only the meridional mass divergence in the ocean interior but also the incoming zonal mass flux at the western boundary, which generally overcompensates the interior meridional divergence. Therefore, the Rossby waves alone cannot make a negative feedback. However, the outgoing zonal mass flux associated with the reflected Kelvin wave at the western boundary reduces the incoming boundary mass flux associated with the Rossby waves, resulting in the tendency of equatorial basin‐wide heat content varying in phase with the meridional divergence. Also shown is that the nonequilibrium adjustment of the tropical Pacific Ocean is mainly due to the free Kelvin waves reflected at the western boundary.
    Type of Medium: Online Resource
    ISSN: 0094-8276 , 1944-8007
    URL: Article
    DOI: 10.1029/2001GL013363
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2001
    detail.hit.zdb_id: 2021599-X
    detail.hit.zdb_id: 7403-2
    SSG: 16,13
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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