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Abstract:

This paper deals with the relationship between the interannual variability of sea surface temperature (SST) and its associated atmospheric circulation and rainfall variability over southeastern South America (SSA), namely the subtropical region east of the Andes between 20° and 40°S, during the austral spring. Rainfall in SSA and SST interannual variability is studied using canonical correlation analysis. The first two modes show the well-known warm-wet and cold-dry pattern between the equatorial SST and rainfall over most of this part of the world. However, SST in the equatorial regions does not modulate rainfall variability among El Niño (EN) years or among La Niña (LN) years. On the other hand, it does modulate this variability between EN and LN cases as a whole and among neutral cases indicating that the SSA rainfall response to equatorial Pacific SST is not linear over the observed SST range, having no dependence on the extremes of this range. In contrast, among EN events, SST in the subtropical south-central Pacific (SSCP) modulates the seasonal rainfall over most of SSA. Also, when all the years are considered, this SST has a correlation with precipitation of magnitude similar to those corresponding to the SST in EN regions. Consistent with this, the circulation field has enhanced cyclonic (anticyclonic) advection over subtropical SSA when SST in the SSCP is cold (warm). SSTs in EN-3 or EN-3.4 regions and in the SSCP are negatively correlated, but their correlation is practically zero when only EN cases or only neutral cases are considered, and very small in LN cases. This allows a stratification analysis composing cases according to different SSTs in EN-3 and EN-3.4 regions with almost constant SST in the SSCP and similarly according to different SST in the SSCP with approximately constant SST in EN regions. The composite difference fields with constant equatorial SST and with constant SST in the SSCP have a wave train in the Pacific similar to the ENSO-like pattern. Besides most of the ENSO circulation signal at 200 hPa over mid-and high latitudes is associated with SST variability at the SSCP rather than with SST variability in EN regions.

Registro:

Documento: Artículo
Título:The relation between sea surface temperature at the subtropical South-Central Pacific and precipitation in Southeastern South America
Autor:Barros, V.R.; Silvestri, G.E.
Filiación:Department of Atmospheric Sciences, University of Buenos Aires, CONICET, Pabellon II, 2 Piso, Buenos Aires 1428, Argentina
Palabras clave:Numerical analysis; Precipitation (meteorology); Thermal stratification; Sea surface temperatures (SST); Climatology; atmospheric circulation; El Nino; La Nina; precipitation (climatology); sea surface temperature; South America
Año:2002
Volumen:15
Número:1
Página de inicio:251
Página de fin:267
Título revista:Journal of Climate
Título revista abreviado:J. Clim.
ISSN:08948755
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v15_n1_p251_Barros

Referencias:

  • Aceituno, P., On the functioning of the Southern Oscillation in the South American sector. Part I: Surface climate (1988) Mon. Wea. Rev, 116, pp. 505-524
  • Barnston, A.G., Linear statistical short-term climate prediction skill in the Northern Hemisphere (1994) J. Climate, 7, pp. 2660-2697
  • Barros, V.R., Castaneda, M.E., Doyle, M.E., Recent precipitation trends in Southern South America east of the Andes: An indication of climatic variability (2000) Southern Hemisphere Paleo- and Neoclimates, pp. 187-206. , P.P. Smolka and W. Volkheimer. Eds., Springer-Verlag
  • Barros, V.R., González, M., Liebmann, B., Camilloni, I., Influence of the South Atlantic convergence zone and South Atlantic sea surface temperature on the interannual summer rainfall variability in Southern South America (2000) Theor. Appl. Climatol, 67, pp. 123-183
  • Diaz, A.F., Strudzinski, C.D., Mechoso, C.R., Relationships between precipitation anomalies in Uruguay and Southern Brazil and sea surface temperature in the Pacific and Atlantic Oceans (1998) J. Climate, 11, pp. 251-271
  • Development of methodologies for quality control and handling of missing data of meteorological variables (1988) CONI-CYT-BID Project 51/94, , Dirección Nacional de Meteorología and Universidad de la República. Montevideo, Uruguay, 129 pp
  • Doyle, M.E., Barros, V., Relationship between water vapor sources and rainfall over Southern South America (2000) Sixth Int. Conf. on Southern Hemisphere Meteorology and Oceanography, pp. 280-281. , Preprints. Santiago, Chile, Amer. Meteor. Soc
  • García, N.O., Vargas, W.M., The temporal climatic variability in the Río de la Plata basin (1998) Climatic Change, 38, pp. 359-379
  • Garreaud, R.D., Battisti, D.S., Interannual (ENSO) and interdecadal (ENSO-like) variability in the Southern Hemisphere (1999) J. Climate, 12, pp. 2113-2123
  • Gonzalez, M., Barros, V., Aspectos estadísticos del ciclo anual de precipitación y sus anomalías en Argentina subtropical (1996) Meteorológica, 21, pp. 15-26
  • Grahan, N.E., Michaelson, J., Barnett, T.P., Investigations of the El Niño-Southern Oscillation with statistical models. I: Predictor field characteristics (1987) J. Geophys. Res, 92, pp. 14251-14270
  • Grimm, A.M., Ferraz, S.E.T., Gomes, J., Precipitation anomalies in Southern Brazil associated with El Niño and La Niña events (1998) J. Climate, 11, pp. 2863-2880
  • Grimm, A.M., Barros, V., Doyle, M., Climate variability in southern South America associated with El Niño and La Niña events (2000) J. Climate, 13, pp. 35-58
  • Hoffman, J.A., Maps of mean temperature and precipitation (1975) Climatic Atlas of South America WMO/UNESCO, 1, pp. 1-28
  • Hoskins, B.J., Karoly, D.J., The steady linear response of a spherical atmosphere to thermal and orographic forcing (1981) J. Atmos. Sci, 38, pp. 1178-1196
  • James, I.N., Wave propagation and steady eddies (1994) Introduction to Circulation Atmospheres, pp. 164-207. , Cambridge Atmospheric and Space Science Series, Cambridge University Press
  • Kalnay, E., The NCEP/NCAR 40-year reanalysis project (1996) Bull. Amer. Meteor. Soc, 77, pp. 437-471. , and Coauthors
  • Karoly, D.J., Southern Hemisphere circulation features associated with El Niño-Southern Oscillation events (1989) J. Climate, 2, pp. 1239-1252
  • Kidson, J.W., Principal modes of Southern Hemisphere low-frequency variability obtained from NCEP-NCAR reanalysis (1999) J. Climate, 12, pp. 2808-2830
  • Kiladis, G.N., Diaz, H.F., Global climatic anomalies associated with extremes in the Southern Oscillation (1989) J. Climate, 2, pp. 1069-1090
  • Mechoso, C.R., Perez Iribarren, G., Streamflow in southeastern South America and the Southern Oscillation (1992) J. Climate, 5, pp. 1535-1539
  • Mechoso, C.R., Robertson, A.W., Interannual and decadal cycles in river flows of Southeastern South America (1998) J. Climate, 11, pp. 2570-2580
  • Montecinos, A., Díaz, A., Aceituno, P., Seasonal diagnostic and predictability of rainfall in subtropical South America based on tropical Pacific SST (2000) J. Climate, 13, pp. 746-758
  • Nitta, T., Yamada, S., Recent warming of tropical surface temperature and its relationship to the Northern Hemisphere circulation (1989) J. Meteor. Soc. Japan, 67, pp. 375-383
  • Nogues-Paegle, J., Mo, K.C., Alternating wet and dry conditions over South America summer (1997) Mon. Wea. Rev, 125, pp. 279-291
  • Orlanski, I., Poleward deflection of storm tracks (1998) J. Atmos. Sci, 55, pp. 2577-2602
  • Orlanski, I., Moist convection in baroclinic life-cycles (2000) NOAA Geophysical Fluid Dynamics Laboratory Annual Report 2000, Sec. 7.1.2, , 217 pp
  • Panofosky, H.A., Brier, G.W., (1965) Some Applications of Statistics to Meteorology, , Pennsylvania State University, 226 pp
  • Pisciottano, G., Diaz, A., Cazes, G., Mechoso, C.R., El Niño-Southern Oscillation impact on rainfall in Uruguay (1994) J. Climate, 7, pp. 1286-1302
  • Power, S., Casey, T., Folland, C., Colman, A., Mehta, V., Inter-decadal modulation of the impact of ENSO on Australia (1999) Climate Dyn, 15, pp. 319-324
  • Preisendorfer, R.W., (1988) Principal Component Analysis in Meteorology and Oceanography, , Elsevier, 418 pp
  • Prohaska, F.J., Climates of Central and South America (1976) World Survey of Climatology, pp. 13-72. , Schwerdtfeger, Ed., Elsevier
  • Quinn, W., Neal, V., de Mayolo Antunez, S., El Niño occurrences over the past four and a half centuries (1987) J. Geophys. Res, 92, pp. 14449-14461
  • Rao, V.B., Hada, K., Characteristics of rainfall over Brazil: Annual variations and connections with the Southern Oscillation (1990) Theor. Appl. Climatol, 42, pp. 81-90
  • Rayner, N.A., Horton, E.B., Parker, D.E., Folland, C.K., Hackett, R.B., A version 2.2 of the global sea-ice and sea surface temperature data set, 1903-1994 (1996) Hadley Centre for Climate Prediction and Research Tech. Note 74, , http://podaac.jpl.nasa.gov, 42 pp. Available online at
  • Renwick, J.A., ENSO-related variability in the frequency of South Pacific blocking (1998) Mon. Wea. Rev, 126, pp. 3117-3123
  • Robertson, A.W., Mechoso, C.R., Interannual and interdecadal variability of the South Atlantic convergence zone (2000) Mon. Wea. Rev, 128, pp. 3117-3123
  • Ropelewski, C.H., Halpert, S., Global and regional scale precipitation patterns associated with the El Niño-Southern Oscillation (1987) Mon. Wea. Rev, 115, pp. 1606-1626
  • Ropelewski, C.H., Halpert, S., Precipitation patterns associated with the high index phase of the Southern Oscillation (1989) J. Climate, 2, pp. 268-284
  • Rutlant, J., Fuenzalida, H., Synoptic aspects of the Central Chile rainfall variability associated with the Southern Oscillation (1991) Int. J. Climatol, 11, pp. 63-76
  • Sardeshmukh, P.D., Hoskins, B.J., The generation of global rotational flow by steady idealized tropical divergence (1988) J. Atmos. Sci, 45, pp. 1228-1251
  • Sinclair, M.N., Renwick, J.A., Kidson, J.W., Low-frequency variability of Southern Hemisphere sea level pressure and weather system activity (1997) Mon. Wea. Rev, 125, pp. 2531-2543
  • Trenberth, K.E., Recent observed interdecadal climate changes in the Northern Hemisphere (1990) Bull. Amer. Meteor. Soc, 71, pp. 988-993
  • Trenberth, K.E., Caron, J.M., The Southern Oscillation revisited: Sea level pressures, surface temperatures, and precipitation (2000) J. Climate, 13, pp. 4358-4365
  • van Loon, H., Shea, D.J., The Southern Oscillation. Part IV: Anomalies of the sea level pressure on the Southern Hemisphere and of Pacific sea surface temperature during the development of a warm event (1987) Mon. Wea. Rev, 115, pp. 370-379
  • Zhang, Y., Wallace, J.M., Battisti, D.S., ENSO-like interdecadal variability: 1900-93 (1997) J. Climate, 10, pp. 1004-1020

Citas:

---------- APA ----------
Barros, V.R. & Silvestri, G.E. (2002) . The relation between sea surface temperature at the subtropical South-Central Pacific and precipitation in Southeastern South America. Journal of Climate, 15(1), 251-267.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v15_n1_p251_Barros [ ]
---------- CHICAGO ----------
Barros, V.R., Silvestri, G.E. "The relation between sea surface temperature at the subtropical South-Central Pacific and precipitation in Southeastern South America" . Journal of Climate 15, no. 1 (2002) : 251-267.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v15_n1_p251_Barros [ ]
---------- MLA ----------
Barros, V.R., Silvestri, G.E. "The relation between sea surface temperature at the subtropical South-Central Pacific and precipitation in Southeastern South America" . Journal of Climate, vol. 15, no. 1, 2002, pp. 251-267.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v15_n1_p251_Barros [ ]
---------- VANCOUVER ----------
Barros, V.R., Silvestri, G.E. The relation between sea surface temperature at the subtropical South-Central Pacific and precipitation in Southeastern South America. J. Clim. 2002;15(1):251-267.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v15_n1_p251_Barros [ ]