The monitoring of El Nino during 1997-98 in activity layer of Pacific ocean near the west coast of Mexico

Authors: Filonov A.E., Tereshchenko I.E.

Year: 2008

Issue: 06

Pages: 170-180


The work presents an analysis of the monthly oceanographic surveys performed during the period of 1996-98 on the Polygon, situated near the west coast of Mexico. Based on the results of these surveys, monthly average temperature and salinity profiles were calculated. There was noticed that the profiles for summer-fall period of the 1997 and for the winter period of 1998, were very different from the same period profiles for the year 1996. It was caused by the transfer of huge amounts of water with higher temperature and lower salinity, and with T,S characteristics of the Pacific Tropical Surface Water and Pacific Equatorial Surface Water into the Polygon area. By the January 1998, these water masses had filled the whole 80m layer. An increase of 150m heat storage from 10.1 to 15.3 GJ/m^2, in comparison to its January 1996 level, was also registered. The processes that caused temperature anomalies (SST) in B region of the Pacific Ocean (4°N-4°S; 90°W-150°W), were one month ahead of the processes of temperature increase and salinity lowering.

Tags: heat storage; Mexico; phase of process; polygon; salinity; Эль-Ниньо


  1. Anderson, D.L. and P.B. Rowlands. The role of inertia-gravity waves in the response of a tropical ocean to the incidence of an equatorial Kelvin wave on a meridional boundary, J. Mar. Res., 34, 295-312, 1976.
  2. Badan, A. La Corriente Costera de Costa Rica en el Pacífico Mexicano. Union Geofisica Mexicana, Monograf. №3, 99-112, 1997.
  3. Badan, A. Coastal Circulation from the Galapagos to the Gulf of California, The Sea, vol. 11, The Global Coastal Ocean, Regional Studies and. Syntheses, edited by A. R. Robinson and K. H. Brink, 315–343, John Wiley, Hoboken, N. J.,1998.
  4. Baumgartner, T. R., N. Christiensen, Jr. 1985. Coupling of the Gulf of California to large-scale interannual climatic variability. Mar. Res. 43, 825-848.
  5. Diaz, H.F.and V.Markgraf. El Niño. Historical and Paleoclimatic Aspects of the Southern Oscillation, 476 pp., Cambridge Univ. Press., 1992.
  6. Christensen, N., R. de La Paz and G. Gutiérrez. A study of subinertial waves off the west coast of Mexico, Deep Sea Res., 30, 835-850, 1983.
  7. Clarke, A.J. The reflection of equatorial waves from oceanic boundaries, J. Phys. Oceanogr., 13, 1193-1207, 1983
  8. Emery, W.J. and R.E. Thomson, Data Analysis Methods in Physical Oceanography. Elsevier, Amsterdam, 1997.
  9. Fiedler P.C., and J. Talley, The hydrography of the eastern Tropical Pacific: a review. Progr. Oceanogr., 69, 143-180, 2006.
  10. Filonov, A.E., C.O. Monzon and I.E. Tereshchenko. On the conditions of internal wave generation along the west coast of Mexico, Ciencias Mar., 23, 255-272, 1996a.
  11. Filonov, A.E., C.O. Monzon and I.E. Tereshchenko. A technique for fast сonductivity-temperature-depth oceanographic surveys, Geofisica Internacional, 35, 415-420, 1996b.
  12. Filonov A.E. On the interpretation of short-period fluctuation in the thermocline obtained from a towed sensor. Ciencias Marinas, 23, 209-225, 1997.
  13. Filonov, A.E., ¿Morira el lago de Chapala? Existe la posibilidad de salvarlo? Teorema, 3, 16-18, 1998.
  14. Filonov, A.E. and Tereshchenko, I.E ., 2000. El Niño 1997-98 monitoring in mixed layer at the Pacific Ocean near Mexico’s West Coast. Geophis. Res. Letters. 27(5), 705-709.
  15. Franco-Gordo, C., E. Godínez-Domínguez, A.E. Filonov, I.E. Tereshchenko, and J. Freire, Plankton and larval fish dynamics prior and during El Niño period (1997-98) in the central Pacific coast of Mexico, Progress in Oceanography, 63, 99-123, 2004.
  16. Gill, A.E. Atmosphere-Ocean Dynamics, 646 pp., Academic Press. N.Y, 1982
  17. Gonzàlez, J.I., J.Ochoa and P. Ripa. 1996. Series del nivel del mar, GEOS,3, 41-42, 1996.
  18. Kessler, W.S., Mean three-dimensional circulation in the northeastern tropical Pacific. J. Geophys. Res., 32, 2457-2471, 2002.
  19. Kessler, W.S., The circulation of the eastern Tropical Pacific: a review. Progr. Oceanogr., 69, 181-217, 2006.
  20. LeBlond, P.H. and L.A.Mysak. Wawes in the ocean, 602 pp., Elsevier Scentific Publications Co., Amsterdam, 1978.
  21. Mothly Ocean Report. 1996-1998. Climate and Marine Department Japan Meteorological Agency.
  22. Pearcy, W.G.and and A. Schoener. Changes in the marine biota coincident with the 1982’1983 El Niño in the northeastern subartic Pacific Osean. J. Geophys. Res., 92, 14417-14428, 1987.
  23. Philander, S.G. El Niño, la Niña and the southern oscillation, 289 pp., Intern. Gophys. Series. Acad. Press. 46, 1990.
  24. Shaffer, G., O. Pizarro, L. Djurfeldt, S. Salinas and J. Rutllant. Circulation and Low-Frequency Variability near the Chilean Coast: Remotely Forced Fluctuations during the 1991-92 El Niño, J. Phys. Oceanogr., 27, 217-235, 1997.
  25. Strub, P. T., and C. James, Altimeter-derived surface circulation in the large-scale NE Pacific Gyres: Part 1. Seasonal variability, Progr. Oceanogr., 53, 163-183, 2002a.
  26. Strub, P. T., and C. James, Altimeter-derived surface circulation in the large-scale NE Pacific Gyres: Part 2.1997-1998 El Niño anomalies, Progr. Oceanogr., 53, 185-214, 2002b.
  27. Tereshchenko, I.E., and Filonov, A.E., Efectos de «El Niño 1997-98» en la zona metropolitana de Guadalajara, Memoria de VIII Congreso de la Organización Mexicana de Meteorologos. Veracruz, 168-170, 1998.
  28. Tereshchenko, I., A. Filonov, C. Monzon, A. Gallegos, and R. Rodriguez, El Niño 1997-98 and the Hydrometeorological Variability of Chapala, a shallow tropical lake in Mexico, Journal of Hydrology, 264, 133-146, 2002.
  29. Tereshchenko, I., A. Filonov, C. Monzón, and A. Figueroa, Weather signature of “El Niño” in western México, Geofísica Internacional, Special Issue, 42, 389-396, 2003.
  30. Trasviña, A., Lluch-Cota, A., Filonov, A.E. and Gallegos, A. 1999. Oceanografía y El Niño. Capítulo 3 en: Los Impactos de El Niño en México. Victor Magaña (Editor). Dirección General de Proltección Civil. Secretyaria de Gobernación, 69-102.
  31. Trenberth, K.E., The definition of El Niño, Bull. Am. Meteorol. Soc., 78, 2771-2777, 1997.
  32. Wang, C. and P.C. Fiedler, ENSO variability and the eastern tropical Pacific: A review, Progr. Oceanogr., 69, 239-266, 2006.
  33. Wirtky, K. Surface currents of the Eastern Tropical Pacific Ocean, Bulletin Inter-American Tropical Tuna Commition., 10, 269-304, 1965.
  34. UNESCO. Progress on oceanographic tables and standarts 1983-1986: Work and recommendations of the Unesco/SCOR/ICES/ LAPSO Joint Panel. Tech. Pap. Mar. Sci, 50, 59, 1986.
  35. UNESCO. International Oceanographic Tables, Vol.4. Properties derived from the International Equation of State of Seawater, 1980. Tech. Pap.Mar.Sci, 40, 195, 1987.
  36. Zamudio, L., A.P. Leonardo, S.D. Meyers, J.J. O’Brien, ENSO and eddies on the southwest coast of Mexico, Geophys. Res. Lett., 28, 13-17, 2001.
Download full text (PDF)