Experimental Dendroclimatic Reconstruction of the Southern Oscillation
| Autor: | D. W. Stahle, M. K. Cleaveland, M. D. Therrell, D. A. Gay, R. D. D'Arrigo, P. J. Krusic, E. R. Cook, R. J. Allan, J. E. Cole, R. B. Dunbar, M. D. Moore, M. A. Stokes, B. T. Burns, J. Villanueva-Diaz, L. G. Thompson |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1520-0477 0003-0007 |
| DOI: | 10.1175/1520-0477(1998)079<2137:edrots>2.0.co;2 |
| Popis: | Exactly dated tree-ring chronologies from ENSO-sensitive regions in subtropical North America and Indonesia together register the strongest ENSO signal yet detected in tree-ring data worldwide and have been used to reconstruct the winter Southern Oscillation index (SOI) from 1706 to 1977. This reconstruction explains 53% of the variance in the instrumental winter SOI during the boreal cool season (December-February) and was verified in the time, space, and frequency domains by comparisons with independent instrumental SOI and sea surface temperature (SST) data. The large-scale SST anomaly patterns associated with ENSO in the equatorial and North Pacific during the 1879-1977 calibration period are reproduced in detail by this reconstruction. Cross-spectral analyses indicate that the reconstruction reproduces over 70% of the instrumental winter SOI variance at periods between 3.5 and 5.6 yr, and over 88% in the 4-yr frequency band. Oscillatory modes of variance identified with singular spectrum ana... |
| Databáze: | OpenAIRE |
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