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Abstract:

Previous studies documented that El Niño (EN) events are in general associated with negative phases of the Southern Annular Mode (SAM). EN 2015–2016 (EN15–16) was one of the three strongest events ever recorded. However, it was associated with a SAM positive phase of extreme intensity. Furthermore, while the negative linear relationship between ENSO and SAM during the most recent period (1986–2014) was significant and associated with a narrow uncertainty band, the combined condition of both climate patterns in the EN15–16 event was an outlier. The EN15–16 influence on the austral summer circulation anomalies at the extratropical and polar regions of the Southern Hemisphere was considerably altered by the strong SAM positive phase, which was evident not only at the troposphere but also at the stratosphere. Such circulation changes resulted in unusual regional impacts, such as negative anomalies of surface air temperature in western Antarctic Peninsula and negative precipitation anomalies in southeastern South America, ever recorded for previous strong EN events. Further research is needed to better understand the mechanisms explaining the SAM behaviour during 2015–2016 and its implication for climate predictability on seasonal timescales. © 2018 Royal Meteorological Society

Registro:

Documento: Artículo
Título:Activity of the Southern Annular Mode during 2015–2016 El Niño event and its impact on Southern Hemisphere climate anomalies
Autor:Vera, C.S.; Osman, M.
Filiación:Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
Centro de Investigaciones del Mar y la Atmósfera (CIMA), Instituto Franco-Argentino del Clima y sus Impactos (UMI-IFAECI)/CNRS, CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:ENSO; PSA patterns; SAM; southeastern South America; Nickel; Circulation anomalies; Climate predictability; ENSO; Precipitation anomalies; PSA patterns; Southeastern South America; Surface air temperatures; Western Antarctic Peninsula; Climatology; air-sea interaction; Arctic Oscillation; atmospheric circulation; climate prediction; climatology; El Nino; El Nino-Southern Oscillation; Southern Hemisphere; summer
Año:2018
Volumen:38
Página de inicio:e1288
Página de fin:e1295
DOI: http://dx.doi.org/10.1002/joc.5419
Título revista:International Journal of Climatology
Título revista abreviado:Int. J. Climatol.
ISSN:08998418
CODEN:IJCLE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998418_v38_n_pe1288_Vera

Referencias:

  • Arblaster, J.M., Meehl, G.A., Contributions of external forcings to southern annular mode trends (2006) J. Clim., 19 (12), pp. 2896-2905
  • Arblaster, J.M., Meehl, G.A., Karoly, D.J., Future climate change in the southern hemisphere: competing effects of ozone and greenhouse gases (2011) Geophys. Res. Lett., 38 (2), p. L02701
  • Baldwin, M.P., Dunkerton, T.J., Stratospheric harbingers of anomalous weather regimes (2001) Science, 294 (5542), pp. 581-584
  • Clem, K.R., Fogt, R.L., Varying roles of ENSO and SAM on the Antarctic Peninsula climate in austral spring (2013) J. Geophys. Res. Atmos., 118 (20), pp. 11481-11492
  • Clem, K.R., Renwick, J.A., McGregor, J., Fogt, R.L., The relative influence of ENSO and SAM on Antarctic Peninsula climate (2016) J. Geophys. Res. Atmos., 121 (16), pp. 9324-9341. , https://doi.org/10.1002/2016JD025305
  • (2015), http://www.cpc.ncep.noaa.gov/products/CDB/CDB_Archive_pdf/pdf_CDB_archive.shtml, Climate diagnostic bulletin. Near real-time ocean/atmosphere monitoring, assessments and prediction. Climate Prediction Center., (accessed 11 January 2018); Fogt, R.L., El Niño and Antarctica [in “state of the climate in 2015”] (2016) Bull. Am. Meteorol. Soc., 97 (8), p. S162
  • Fogt, R.L., Bromwich, D.H., Decadal variability of the enso teleconnection to the high-latitude south pacific governed by coupling with the southern annular mode (2006) J. Clim., 19 (6), pp. 979-997
  • Fogt, R.L., Bromwich, D.H., Hines, K.M., Understanding the SAM influence on the south pacific ENSO teleconnection (2011) Clim. Dyn., 36 (7), pp. 1555-1576
  • Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Joseph, D., The NCEP/NCAR 40-year reanalysis project (1996) Bull. Am. Meteorol. Soc., 77 (3), pp. 437-471
  • Kidson, J.W., Interannual variations in the southern hemisphere circulation (1988) J. Clim., 1 (12), pp. 1177-1198
  • Kidson, J.W., Principal modes of southern hemisphere low-frequency variability obtained from NCEP-NCAR reanalyses (1999) J. Clim., 12 (9), pp. 2808-2830
  • Marshall, G.J., Trends in the southern annular mode from observations and reanalyses (2003) J. Clim., 16 (24), pp. 4134-4143
  • Mo, K.C., Relationships between low-frequency variability in the southern hemisphere and sea surface temperature anomalies (2000) J. Clim., 13 (20), pp. 3599-3610
  • Nash, E.R., Strahan, S.E., Kramarova, N., Long, C.S., Pitts, M.C., Newman, P.A., Johnson, B., Braathen, G.O., Antarctic ozone hole [in “state of the climate in 2015”] (2016) Bull. Am. Meteorol. Soc., 97 (8), pp. S166-S172
  • Silvestri, G., Vera, C., Nonstationary impacts of the southern annular mode on southern hemisphere climate (2009) J. Clim., 22 (22), pp. 6142-6148
  • Vera, C., Silvestri, G., Precipitation interannual variability in South America from the WCRP-CMIP3 multi-model dataset (2009) Clim. Dyn., 32 (7), pp. 1003-1014
  • Vera, C., Silvestri, G., Barros, V., Carril, A., Differences in El Niño response over the southern hemisphere (2004) J. Clim., 17 (9), pp. 1741-1753
  • Wolter, K., Timlin, M.S., El Niño/southern oscillation behaviour since 1871 as diagnosed in an extended multivariate enso index (MEI.ext) (2011) Int. J. Climatol., 31 (7), pp. 1074-1087

Citas:

---------- APA ----------
Vera, C.S. & Osman, M. (2018) . Activity of the Southern Annular Mode during 2015–2016 El Niño event and its impact on Southern Hemisphere climate anomalies. International Journal of Climatology, 38, e1288-e1295.
http://dx.doi.org/10.1002/joc.5419
---------- CHICAGO ----------
Vera, C.S., Osman, M. "Activity of the Southern Annular Mode during 2015–2016 El Niño event and its impact on Southern Hemisphere climate anomalies" . International Journal of Climatology 38 (2018) : e1288-e1295.
http://dx.doi.org/10.1002/joc.5419
---------- MLA ----------
Vera, C.S., Osman, M. "Activity of the Southern Annular Mode during 2015–2016 El Niño event and its impact on Southern Hemisphere climate anomalies" . International Journal of Climatology, vol. 38, 2018, pp. e1288-e1295.
http://dx.doi.org/10.1002/joc.5419
---------- VANCOUVER ----------
Vera, C.S., Osman, M. Activity of the Southern Annular Mode during 2015–2016 El Niño event and its impact on Southern Hemisphere climate anomalies. Int. J. Climatol. 2018;38:e1288-e1295.
http://dx.doi.org/10.1002/joc.5419