Premium
ENSO related variability in the Southern Hemisphere, 1948–2000
Author(s) -
Ribera Pedro,
Mann Michael E.
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl015818
Subject(s) - southern hemisphere , climatology , el niño southern oscillation , northern hemisphere , la niña , latitude , environmental science , geology , atmospheric sciences , geodesy
The spatiotemporal evolution of Southern Hemisphere climate variability is diagnosed based on the use of the NCEP reanalysis (1948–2000) dataset. Using the MTM‐SVD analysis method, significant narrowband variability is isolated from the multi‐variate dataset. It is found that the ENSO signal exhibits statistically significant behavior at quasiquadrennial (3–6 yr) timescales for the full time‐period. A significant quasibiennial (2–3 yr) timescales emerges only for the latter half of period. Analyses of the spatial evolution of the two reconstructed signals shed additional light on linkages between low and high‐latitude Southern Hemisphere climate anomalies.