Premium
On non‐stationarity of ENSO
Author(s) -
Solow Andrew R.,
Huppert Amit
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 - 10.1029/2003gl018225
Subject(s) - series (stratigraphy) , el niño southern oscillation , time series , spectral analysis , climatology , mathematics , environmental science , statistics , geology , econometrics , physics , paleontology , quantum mechanics , spectroscopy
Evolutionary spectral analysis has been used to study changes through time in the variability of ENSO‐related time series. However, the significance of estimated evolutionary spectra has not been formally assessed. This paper describes a test for non‐stationarity based on an estimate of the evolutionary spectrum and a time series bootstrap procedure. The test is applied to the seasonal time series of sea level pressure at Darwin. No significant non‐stationarity is found.