Fecha/hora: 11/06/2024 01:43:43

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 23/11/2016
Fecha de la última actualización: | 18/12/2018
Autoria: | ANDERSON, W.; SEAGER, R.; BAETHGEN, W.; CANE, M.
Afiliación: | WESTON ANDERSON, Department of Earth and Environmental Sciences, Columbia University, USA; Lamont-Doherty Earth Observatory, Columbia University, New York, USA.; RICHARD SEAGER, Lamont-Doherty Earth Observatory, Columbia University, USA; WALTER BAETHGEN, Regional and Sectorial Research Program, International Research Institute for Climate and Society, USA; MARK CANE, Lamont-Doherty Earth Observatory, Columbia University, New York, USA.
Título: | Life cycles of agriculturally relevant ENSO teleconnections in North and South America.
Año de publicación: | 2016
Fuente/Imprenta: | International Journal of Climatology, 2016, Version of Record online : 11 NOV 2016, DOI: 10.1002/joc.4916
DOI: | 10.1002/joc.4916
Idioma: | Inglés
Notas: | Received 26 May 2016; Revised 30 August 2016; Accepted 10 September 2016

Contenido:

ABSTRACT

The characteristic evolution of El Niño Southern Oscillation (ENSO) on timescales of months to years means that risks to agriculture have structure between seasons and years. The potential for consecutive ENSO-induced yield anomalies is of particular interest in major food producing areas, where modest changes in yield have significant effects on global markets. In this study, we analyse how multi-year El Niño and La Niña life cycles relate to climate sensitive portions of major crop-growing seasons in North and South America.

We analyse the dynamics underlying these life cycles to illustrate which aspects of the system are most important for agriculture. In North America, the same-season teleconnections affecting soybean and maize have been well studied, but we demonstrate the importance of lagged soil moisture teleconnections for wheat in the southern Great Plains. In South America, peak ENSO sea surface temperature (SST) teleconnections are concurrent with, and therefore critical for, wheat and maize growing seasons while soil moisture memory in Argentina plays an important role during the soybean growing season.

Finally, we show that ENSO teleconnection life cycles are consistent with historical yield anomalies. Both El Niño and La Niña life cycles tend to force consecutive seasons of either above or below expected yields. While the magnitude of the yield anomalies forced by ENSO is often modest, they occur in major crop-producing regions.

© 2016 Royal Meteorological Society

Palabras-Clave: | AGRICULTURE; EL NIÑO; EL NIÑO OSCILACIÓN SUR; EL NIÑO SOUTHERN OSCILLATION; ENSO; LA NIÑA; MAIZE; SOYBEAN; WHEAT.
Thesagro: | CLIMA; MAÍZ; SOJA; TRIGO.
Categoría del tema: | P40 Meteorología y climatología
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (101241-1) - ADD - AP - DD - RBI - LB -  -  - DIS