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- W4386022019 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> We investigate whether there are correlations between temperatures on the Eastern South Paciï¬c coast, inï¬uenced by the Humboldt Current System, and El Niño–Southern Oscillation (ENSO) events, using a set of 16 oceanic and atmospheric temperature time series from Chilean coastal stations distributed between 18° and 45° S. Spectral analysis indicates periodicities that can be related to both internal and external forcing, involving not only ENSO, but also the Paciï¬c Decadal Oscillation, the Southern Annual Mode, the Quasi-Biennial Oscillation and the lunar nodal cycle. We carry out a nonlinear time series analysis. An asymptotic neural network test for chaos based on the largest global Lyapunov exponent indicates that the temperature dynamics along the Chilean coast is not chaotic. We calculate local Lyapunov exponents that characterize the short-term stability of the series. Using a cross entropy test, we ï¬nd that just two stations in northern Chile, one oceanic, Iquique, and one atmospheric, Arica, present a signiï¬cant positive correlation of local Lyapunov exponents with ENSO, with Iquique being the station that displays very particular regional characteristics. This work, having a large-scale study area and using time series from hitherto unused sources (naval records), reveals the nonlinear dynamics of climate variability in Chile." @default.
- W4386022019 created "2023-08-22" @default.
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- W4386022019 date "2023-08-21" @default.
- W4386022019 modified "2023-10-02" @default.
- W4386022019 title "Reply on RC1" @default.
- W4386022019 doi "https://doi.org/10.5194/esd-2023-9-ac1" @default.
- W4386022019 hasPublicationYear "2023" @default.
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