Authors: Shkolnyy E.P., Sushchenko A.I.
Year: 2017
Issue: 19
Pages: 34-40
Abstract
Study of the El Niño-La Niña is a major challenge for the scientific community. In addition to the impact on weather and climate in different regions of the Earth, this phenomenon is associated with the socio-economic impact for many countries. The task of such a large-scale phenomenon prognosis is associated with considerable difficulties, one of the main problems is the infrequency of its occurrence and changes in the characteristics between the events. Therefore, a comprehensive study of its urgent task for the international scientific community.
This paper presents the results of a study of the statistical structure of the fields of geopotential heights of 850 hPa pressure level in the western sector of the Southern hemisphere. The study was conducted using a component analysis. Decomposition fields of principal components in different scales are shown. Filtered field anomalies suggest tendencies of formation of the zonal Walker’ cells, characteristic for the warm period of El Niño, La Niña, when the structure of the Walker’ cell is less pronounced. Tendencies offset to the east of the Pacific high in the Southern Hemisphere to split it into two parts, as can be seen from the fields of geopotential height anomalies. The zonal circulation Walker’ cell in the warm and cold phases of ENSO is clearly appeared in the fields of geopotential heights, when is highlight the part caused by the second principal components.
Tags: filtered field; geopotential field; the field anomalies; the main components; главные компоненты; отфильтрованное поле; поле аномалий; поля геопотенциала
Bibliography
- Bondarenko A. L., Zhmur V. V. Fizicheskie problemy ekologii (ekologicheskaya fizika) – Physical problems of ecology (Environmental Physics). Moscow: MAKS PRESS; The M. V. Lomonosov MSU, Physics faculty,
2005, no. 13, pp. 35–44. (In Russian) - Penland C. A stochastic model of Indo-Pacific sea surface temperature anomalies. Physica D, 1996, vol. 98, pp. 534–558.
- Byshev V. I., Neyman V. I., Byshev V. G., Romanov Yu. A., Serykh I. V. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa – Modern problems of remote sensing of the Earth from space, 2011, no. 4, pp. 200–208. (In Russian)
- Gushchina D. Yu., Devitt B., Petrosyants M. A. Izvestiya Rossiyskoy akademii nauk. Fizika atmosfery i okeana – Russian Academy of Sciences. Atmospheric and Oceanic Physics, 2000, no. 5, pp. 581–604. (In Russian)
- Gushchina D. Yu., Petrosyants M. A. Meteorologiya i gidrologiya – Meteorology and climatology, 1998, no. 12, pp. 5–15. (In Russian)
- Gushchina D. Yu., Petrosyants M. A., Semenov E. K. Meteorologiya i gidrologiya – Meteorology and climatology, 1997, no. 2, pp. 14–27. (In Russian)
- Huang B., Schopf S., Shukla J. Coupled ocean-atmosphere variability in the tropical Atlantic Ocean. CLIVAR Exchanges, 2002, vol. 7 (no. 3/4), pp. 24–27.
- Karoly D. J. Southern Hemisphere circulation features associated with El Nino-southern oscillation events. Journal of Climate, 1989, no. 2, pp. 1239–1252.
- Bondarenko A. L., Zhmur V. V. Meteorologiya i gidrologiya – Meteorology and climatology, 2004, no. 11,
pp. 39–52. (In Russian) - Lau N.-C. Modeling the seasonal dependence of the atmospheric response to observed El Ninos in 1962-76.
Mon.Wea.Rev., 1985, vol. 113, pp. 1970-1996. - McWilliams J., Gent P. A coupled air-sea model for the tropical Pacific. J. Atmos. Sci., 1978, vol. 35, pp. 962–989.
- Penland C., Sardeshmukh P. D. The optimal growth of tropical sea surface temperature anomalies. J. Climate, 1995, vol. 8, pp. 1999–2024.
- Trenberth K. E. Spatial and temporal variations of the southern oscillation. Journal of the Royal Meteorological Society, 1976, no. 102, pp. 639–653.
- Shkol’nyy E. P., Mayboroda L. A. Atmosfera i upravlenie dvizheniem letatel’nykh apparatov [Atmosphere and traffic control of flying machines]. Leningrad, 1973. P. 571.