Navegar

Colección

Datos Estadísticas

Artículo

El editor solo permite decargar el artículo en su versión post-print desde el repositorio. Por favor, si usted posee dicha versión, enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The interannual variability of the frontal activity over the western Southern Hemisphere and its linkage with the variability of the atmospheric circulation and precipitation over southern South America is studied. The analysis is focused on the austral winter and spring seasons. The frontal activity is represented by an index defined as the product between the horizontal gradient of temperature and the relative vorticity at 850 hPa (FI) and is computed from the ERA Interim and NCEP2 reanalysis. For the two seasons the main mode of variability of FI, as depicted by the first Empirical Orthogonal Function, presents centres of action located in the southern part of the western Southern Hemisphere. This pattern is present in the two reanalysis datasets. The correlation coefficients between the principal component of the leading mode of FI and the two main modes of the 500 hPa geopotential height indicate that both the ENSO-mode and the SAM modulate the leading pattern of FI in winter while during the spring season the ENSO-mode controls the FI variability. The variability of the FI has a robust influence on the interannual variability of precipitation over southern South America and adjacent oceans. Over the continent, it was found that the pattern of precipitation anomalies associated with the variability of the FI depicts significant signals over southeastern South America (SESA), centre and south of Chile for winter and over SESA and southeastern Brazil for spring and agrees with the pattern of the leading mode of precipitation variability over southern South America. © 2016, Springer-Verlag Berlin Heidelberg.

Registro:

Documento: Artículo
Título:Interannual variability of the frontal activity in the Southern Hemisphere: relationship with atmospheric circulation and precipitation over southern South America
Autor:Blázquez, J.; Solman, S.A.
Filiación:Centro de Investigaciones del Mar y la Atmósfera (CIMA-CONICET/FCEN-UBA), Departamento de Ciencias de la Atmósfera y los Océanos (FCEN-UBA), Instituto Franco Argentino del Clima y sus Impactos (UMI IFAECI/CNRS), Ciudad Universitaria Pabellón II Piso 2, Buenos Aires, C1428EGA, Argentina
Palabras clave:Atmospheric circulation; Frontal activity; Interannual variability; Precipitation; Southern Hemisphere; annual variation; atmospheric circulation; El Nino-Southern Oscillation; precipitation (climatology); Southern Hemisphere; spring (season); winter; Brazil; Chile
Año:2017
Volumen:48
Número:7-8
Página de inicio:2569
Página de fin:2579
DOI: http://dx.doi.org/10.1007/s00382-016-3223-3
Título revista:Climate Dynamics
Título revista abreviado:Clim. Dyn.
ISSN:09307575
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307575_v48_n7-8_p2569_Blazquez

Referencias:

  • Adler, R.F., Huffman, G.J., Chang, A., Ferraro, R., Xie, P., Janowiak, J., Rudolf, B., Arkin, P., The version 2 global precipitation climatology project (GPCP) monthly precipitation analysis (1979-present) (2003) J Hydrometeorol, 4, pp. 1147-1167
  • Bjerknes, J., Solberg, H., Life cycle of cyclones and the polar front theory of atmospheric circulation (1922) Geophys Publ, 3, pp. 1-18
  • Blázquez, J., Solman, S.A., Intraseasonal variability of wintertime frontal activity and its relationship with precipitation anomalies in the vicinity of South America (2016) Clim Dyn, 46, pp. 2327-2336
  • Browning, K.A., Roberts, N.M., Structure of a frontal cyclone (1994) Q J R Meteorol Soc, 120, pp. 1535-1557
  • Catto, J.L., Jakob, C., Berry, G., Nicholls, N., Relating global precipitation to atmospheric fronts (2012) Geophys Res Lett
  • Dee, D.P., The ERA-interim reanalysis: configuration and performance of the data assimilation system (2011) Q J R Meteorol Soc, 137, pp. 553-597
  • Garreaud, R.D., Battisti, D.S., Interannual (ENSO) and interdecadal (ENSO-like) variability in the Southern Hemisphere tropospheric circulation (1999) J Clim, 12, pp. 2113-2123
  • Grainger, S., Frederiksen, C.S., Zheng, X., Fereday, D., Folland, C.K., Jin, E.K., Kinter, J.L., Syktus, J., Modes of variability of Southern Hemisphere atmospheric circulation estimated by AGCMs (2011) Clim Dyn, 36, pp. 473-490
  • Grimm, A.M., Interannual climate variability in South America: impacts on seasonal precipitation, extreme events, and possible effects of climate change (2011) Stoch Environ Res Risk Assess, 25, pp. 537-554
  • Hannachi, A., Jolliffe, I.T., Stephenson, D.B., Empirical orthogonal functions and related techniques in atmospheric science: a review (2007) Int J Climatol, 27, pp. 1119-1152
  • Kanamitsu, M., Ebisuzaki, W., Woollen, J., Yang, S.-K., Hnilo, J.J., Fiorino, M., Potter, G.L., NCEP-DOE AMIP-II reanalysis (R-2) (2002) Bull Am Meteorol Soc, 83, pp. 1631-1643
  • Kidson, J.W., Interannual variations in the Southern Hemisphere circulation (1988) J Clim, 1, pp. 1177-1198
  • Kidson, J.W., Principal modes of Southern Hemisphere low-frequency variability obtained from NCEP–NCAR reanalyses (1999) J Clim, 12, pp. 2808-2830
  • Kiladis, G.N., Mo, K.C., Interannual and intraseasonal variability in the Southern Hemisphere (1998) Karoly DJ, Vincent DG (eds) Meteorology of the Southern Hemisphere, Chap 3. American Meteorological Society
  • Mo, K., Relationships between low-frequency variability in the Southern Hemisphere and sea surface temperature anomalies (2000) J Clim, 13, pp. 3599-3610
  • Mo, K.C., Nogés Paegle, J., The Pacific–South American modes and their downstream effects (2001) Int J Climatol, 21, pp. 1211-1229
  • Rao, V.B., Do Carmo, A.M.C., Franchito, S.H., Interannual variations of storm tracks in the Southern Hemisphere and their connections with the Antartic Oscillation (2003) Int J Climatol, 23, pp. 1537-1545
  • Rudeva, I., Simmonds, I., Variability and trends of global atmospheric frontal activity and links with large-scale modes of variability (2015) J Clim
  • Silvestri, G.E., Vera, C.S., Antarctic Oscillation signal on precipitation anomalies over southeastern South America (2003) Geophys Res Lett, 30 (21), p. 2115
  • Simmons, A., Uppala, S., Dee, D., Kobayashi, S., ERA-interim: new ECMWF reanalysis products from 1989 onwards (2007) ECMWF Newsl, 110, pp. 25-35
  • Solman, S.A., Menéndez, C.G., ENSO-related variability of the Southern Hemisphere winter storm track over the eastern Pacific-Atlantic sector (2002) J Atmos Sci, 59, pp. 2128-2141
  • Solman, A.S., Orlanski, I., Subpolar high anomaly preconditioning precipitation over South America (2010) J Atmos Sci, 67, pp. 1526-1542
  • Solman, S.A., Orlanski, I., Poleward shift and change of frontal activity in the Southern Hemisphere over the last 40 years (2014) J Atmos Sci, 71, pp. 539-552
  • Thompson, D.W.J., Wallace, J.M., Annular modes in the extratropical circulation. Part I: month-to-month variability (2000) J Clim, 13, pp. 1000-1016
  • Trenberth, K.E., Stepaniak, D.P., Smith, L., Interannual variability of patterns of atmospheric mass distribution (2005) J Clim, 18, pp. 2812-2825
  • Vera, C., Interannual and interdecadal variability of atmospheric synoptic scale activity in the Southern Hemisphere (2003) J Geophys Res, 108 (C4), p. 8077

Citas:

---------- APA ----------
Blázquez, J. & Solman, S.A. (2017) . Interannual variability of the frontal activity in the Southern Hemisphere: relationship with atmospheric circulation and precipitation over southern South America. Climate Dynamics, 48(7-8), 2569-2579.
http://dx.doi.org/10.1007/s00382-016-3223-3
---------- CHICAGO ----------
Blázquez, J., Solman, S.A. "Interannual variability of the frontal activity in the Southern Hemisphere: relationship with atmospheric circulation and precipitation over southern South America" . Climate Dynamics 48, no. 7-8 (2017) : 2569-2579.
http://dx.doi.org/10.1007/s00382-016-3223-3
---------- MLA ----------
Blázquez, J., Solman, S.A. "Interannual variability of the frontal activity in the Southern Hemisphere: relationship with atmospheric circulation and precipitation over southern South America" . Climate Dynamics, vol. 48, no. 7-8, 2017, pp. 2569-2579.
http://dx.doi.org/10.1007/s00382-016-3223-3
---------- VANCOUVER ----------
Blázquez, J., Solman, S.A. Interannual variability of the frontal activity in the Southern Hemisphere: relationship with atmospheric circulation and precipitation over southern South America. Clim. Dyn. 2017;48(7-8):2569-2579.
http://dx.doi.org/10.1007/s00382-016-3223-3