Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: Dima, M., F. Thomas, L. Gerrit, and N. Rimbu
Editorial: Climate Dynamics, DOI 10.1007/s00382-005-0043-2, 2005.
The Rarotonga coral Sr/Ca time series provides a near-monthly resolved proxy record of South Pacific climate variability over the last ~300 years. Here we show that two distinct interdecadal, quasi-periodic time components with periods of ~80 and ~25 years can be identified in this time series by Singular Spectrum Analysis. Their associated spatial patterns in the global sea surface temperature (SST) held show notable differences. Whereas the multidecadal component is associated with a global SST pattern that was recently associated with solar forcing on multidecadal timescales, the bidecadal component is associated with a well known pattern of Pacific decadal to interdecadal SST variability.
Cuvinte cheie: coral proxy record, quasi-periodic interdecadal components, paleoclimate, singular spectrum analysis