INVESTIGADORES
CARRIL Andrea Fabiana
congresos y reuniones científicas
Título:
ACW-like variability over the Southern Ocean
Autor/es:
CARRIL A. F. AND A. NAVARRA
Lugar:
Mar del Plata, Argentina
Reunión:
Conferencia; IAPSO-IABO, Joint Assemblies of the International Association for the Physical Sciences of the Oceans and International Association for Biological Oceanography; 2001
Resumen:
We evaluate the Antarctic
Circumpolar Wave (ACW) variability in the Southern Ocean using a 27-year series
of sea surface temperature (SST) and sea level pressure (SLP). From a
cross-covariance analysis we find that the strongest covariation between the
extratropical wavenumber-2 in SST and in SLP is during the austral summer in
the South Pacific Ocean. Examination of the
time series reveals two timescales of variability. A wavenumber-2 structure in
SST and SLP anomalies correlates well at interannual (IA) timescales, when
ENSO-driven teleconnections seem to energize the ACW. Moreover, in the
1973-1999 epoch, the ACW has been modulated by interdecadal (ID) variability
possibly related to the Southern Oscillation.