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| Titel |
A multivariate climate index for the western coast of Colombia |
| VerfasserIn |
E. Rodríguez-Rubio |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: ENSO South America ; Nr. 33 (2013-04-02), S.21-26 |
| Datensatznummer |
250019077
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| Publikation (Nr.) |
 copernicus.org/adgeo-33-21-2013.pdf |
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| Zusammenfassung |
| Indices of the interannual and interdecadal variability at Tumaco Island
(2° N; 79° W; Colombia), based on time series of sea
surface temperature (SST), air temperature (AT) and precipitation (P) from a
coastal station, are presented regarding the period 1960–2010. These
indices are derived from the first two EOF (empirical orthogonal function)
modes of the normalized time series, which grasp 84% of the explained
variance. The first EOF represents the interannual variability closely
correlated with the ENSO-related SST variability of region Niño 1+2
(r = 0.74; lag = 1), Niño 3 (r = 0.71; lag = 1), and the well-known
period band 2–8 yr. Furthermore, the first EOF also accounts for the extreme
warm events in the eastern equatorial Pacific due to them being well
correlated
with the E index (r = 0.70). The second EOF represents a much longer
variability dominated by the ENSO-like mode or Pacific Decadal Oscillation
(PDO), represented by two interdecadal modes (8–16 yr and 20–30 yr), and may
account also with moderate warm events and cool events, being more sensitive
to cool events. |
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