Meteorological Aspects of the El Ni�o/Southern Oscillation

The single most prominent signal in year-to-year climate variability is the Southern Oscillation, which is associated with fluctuations in atmospheric pressure at sea level in the tropics, monsoon rainfall, and wintertime circulation over North America and other parts of the extratropics. Although meteorologists have known about the Southern Oscillation for more than a half-century, its relation to the oceanic El Ni�o phenomenon was not recognized until the late 1960's, and a theoretical understanding of these relations has begun to emerge only during the past few years. The past 18 months have been characterized by what is probably the most pronounced and certainly the best-documented El Ni�o/Southern Oscillation episode of the past century. In this review meteorological aspects of the time history of the 1982-1983 episode are described and compared with a composite based on six previous events between 1950 and 1975, and the impact of these new observations on theoretical interpretations of the event is discussed.

[1]  Norman Lockyer,et al.  The Behaviour of the Short-Period Atmospheric Pressure Variation over the Earth's Surface , 1904, Proceedings of the Royal Society of London.

[2]  T. Ichiye,et al.  The Anomalous Rainfall of the 1957-58 Winter in the Equatorial Central Pacific Arid Area , 1963 .

[3]  J. Bjerknes,et al.  A possible response of the atmospheric Hadley circulation to equatorial anomalies of ocean temperature , 1966 .

[4]  J. Bjerknes.  ATMOSPHERIC TELECONNECTIONS FROM THE EQUATORIAL PACIFIC1 , 1969 .

[5]  P. Rowntree,et al.  The influence of tropical east Pacific Ocean temperatures on the atmosphere , 1972 .

[6]  K. Trenberth.  Spatial and temporal variations of the Southern Oscillation , 1976 .

[7]  B. Hoskins,et al.  Energy dispersion in a barotropic atmosphere , 1977 .

[8]  E. Reiter.  Long-Term Wind Variability in the Tropical Pacific, Its Possible Causes and Effects , 1978 .

[9]  J. D. Opsteegh,et al.  Seasonal Differences in the Stationary Response of a Linearized Primitive Equation Model: Prospects for Long-Range Weather Forecasting? , 1980 .

[10]  A. E. Gill.  Some simple solutions for heat‐induced tropical circulation , 1980 .

[11]  C. S. Ramage,et al.  Meteorological Aspects of El Niño , 1981 .

[12]  Peter J. Webster,et al.  Mechanisms Determining the Atmospheric Response to Sea Surface Temperature Anomalies , 1981 .

[13]  R. A. Madden,et al.  The Southern Oscillation. Part I: Global Associations with Pressure and Temperature in Northern Winter , 1981 .

[14]  John M. Wallace,et al.  Planetary-Scale Atmospheric Phenomena Associated with the Southern Oscillation , 1981 .

[15]  J. Namias,et al.  Large-Scale Air-Sea Interactions and Short-Period Climatic Fluctuatioins , 1981, Science.

[16]  Phillip A. Arkin,et al.  The Relationship Between Interannual Variability in the 200 mb Tropical Wind Field and the Southern Oscillation , 1982 .

[17]  P. Webster,et al.  Cross-Equatorial Response to Middle-Latitude Forcing in a Zonally Varying Basic State , 1982 .

[18]  R. Keshavamurty.  Response of the Atmosphere to Sea Surface Temperature Anomalies over the Equatorial Pacific and the Teleconnections of the Southern Oscillation , 1982 .

[19]  E. Rasmusson,et al.  Variations in Tropical Sea Surface Temperature and Surface Wind Fields Associated with the Southern Oscillation/El Niño , 1982 .

[20]  P. Webster.  Seasonality in the Local and Remote Atmospheric Response to Sea Surface Temperature Anomalies. , 1982 .

[21]  Eric J. Pitcher,et al.  A General Circulation Model Study of January Climate Anomaly Patterns Associated with Interannual Variation of Equatorial Pacific Sea Surface Temperatures , 1983 .

[22]  A. Oort,et al.  Global Climate Variations Connected with Sea Surface Temperature Anomalies in the Eastern Equatorial Pacific Ocean for the 1958–73 Period , 1983 .

[23]  J. Wallace,et al.  Barotropic Wave Propagation and Instability, and Atmospheric Teleconnection Patterns. , 1983 .

[24]  S. Philander,et al.  El Niño Southern Oscillation phenomena , 1983, Nature.

[25]  J. Wallace,et al.  Numerical Simulation of the Atmospheric Response to Equatorial Pacific Sea Surface Temperature Anomalies , 1983 .

[26]  El chichon climate effect estimated. , 1983, Science.

[27]  G. Branstator.  Horizontal energy propagation in a barotropic atmosphere with meridional and zonal structure , 1983 .