Correlation Structure of the El Niño/Southern Oscillation PhenomenonSource: Journal of Climate:;1988:;volume( 001 ):;issue: 006::page 609DOI: 10.1175/1520-0442(1988)001<0609:CSOTEN>2.0.CO;2Publisher: American Meteorological Society
Abstract: Relationships among the atmospheric phenomena associated with the Southern Oscillation and El Niño are investigated, using the Comprehensive Ocean-Atmosphere Data Set (COADS) of marine surface observations from ships of opportunity and the World Monthly Surface [Land] Station Climatology (WMSSC) for the period 1950-79. Annual mean (April?March) sea level pressure at Darwin, Australia is used as an index of the Southern Oscillation. Results are based on simple linear correlation techniques stratified by season as in the Rasmusson and Carpenter (1982) composite. Correlations on the order of +0.9 are observed between Darwin pressure, sea surface temperature (SST) and rainfall in the equatorial central Pacific, and zonal wind in the equatorial western Pacific. Relations among these variables are strongest from July through November, when the month to month autocorrelation is also at its strongest. Sea surface temperature along the Peruvian coast and pressure in the eastern Pacific are also most strongly coupled to the Southern Oscillation during thew months, which correspond to the cool season in that region. The amplitude of the tropical pressure and central Pacific SST anomalies associated with the Southern Oscillation appear to be just as large and the relationships between them just as coherent during positive excursions of the Southern Oscillation (cold episodes) as during negative excursions (warm episodes). Lead/lag relationships among climatic variables associated with the Southern Oscillation and El Niño events along the South American coast are also examined in the context of the same seasonal stratification. Our results are generally consistent with the traditional view that the Southern Oscillation is, to first order, a standing oscillation with geographically fixed nodes and antinodes.
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contributor author | Wright, Peter B. | |
contributor author | Wallace, John M. | |
contributor author | Mitchell, Todd P. | |
contributor author | Deser, Clara | |
date accessioned | 2017-06-09T15:07:42Z | |
date available | 2017-06-09T15:07:42Z | |
date copyright | 1988/06/01 | |
date issued | 1988 | |
identifier issn | 0894-8755 | |
identifier other | ams-3513.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4172990 | |
description abstract | Relationships among the atmospheric phenomena associated with the Southern Oscillation and El Niño are investigated, using the Comprehensive Ocean-Atmosphere Data Set (COADS) of marine surface observations from ships of opportunity and the World Monthly Surface [Land] Station Climatology (WMSSC) for the period 1950-79. Annual mean (April?March) sea level pressure at Darwin, Australia is used as an index of the Southern Oscillation. Results are based on simple linear correlation techniques stratified by season as in the Rasmusson and Carpenter (1982) composite. Correlations on the order of +0.9 are observed between Darwin pressure, sea surface temperature (SST) and rainfall in the equatorial central Pacific, and zonal wind in the equatorial western Pacific. Relations among these variables are strongest from July through November, when the month to month autocorrelation is also at its strongest. Sea surface temperature along the Peruvian coast and pressure in the eastern Pacific are also most strongly coupled to the Southern Oscillation during thew months, which correspond to the cool season in that region. The amplitude of the tropical pressure and central Pacific SST anomalies associated with the Southern Oscillation appear to be just as large and the relationships between them just as coherent during positive excursions of the Southern Oscillation (cold episodes) as during negative excursions (warm episodes). Lead/lag relationships among climatic variables associated with the Southern Oscillation and El Niño events along the South American coast are also examined in the context of the same seasonal stratification. Our results are generally consistent with the traditional view that the Southern Oscillation is, to first order, a standing oscillation with geographically fixed nodes and antinodes. | |
publisher | American Meteorological Society | |
title | Correlation Structure of the El Niño/Southern Oscillation Phenomenon | |
type | Journal Paper | |
journal volume | 1 | |
journal issue | 6 | |
journal title | Journal of Climate | |
identifier doi | 10.1175/1520-0442(1988)001<0609:CSOTEN>2.0.CO;2 | |
journal fristpage | 609 | |
journal lastpage | 625 | |
tree | Journal of Climate:;1988:;volume( 001 ):;issue: 006 | |
contenttype | Fulltext |