Evidences linking ENSO and coral growth in the Southwestern-South Atlantic

Autor:	T. Ambrizzi, Zelinda M.A.N. Leão, F. Le Cornec, Abdelfettah Sifeddine, Heitor Evangelista, Ruy Kenji Papa de Kikuchi, N. R. Rigozo, B. Segal, Milton Kampel, D. Godiva
Rok vydání:	2007
Předmět:	Atmospheric Science geography geography.geographical_feature_category biology Coral Scleractinia Climate change Coral reef biology.organism_classification Sea surface temperature Oceanography Climatology Sclerochronology Reef Geology Favia
Zdroj:	Climate Dynamics. 29:869-880
ISSN:	1432-0894 0930-7575
Popis:	Physical and biological changes in the marine environment, induced by oceanic-atmospheric processes, can be imprinted in massive coral skeletons. Herein, we present an evidence of potential El Nino impacts at the Southwestern South Atlantic Ocean (SWSA) inferred from the sclerochronology of the reef coral Favia leptophylla. The application of spectral analysis (wavelet decomposition and the iterative regression) to coral growth length and to meteorological-oceanographic parameters (air temperature, sea surface temperature and precipitation) as well as to Southern Oscillation Index (SOI) and solar irradiation indicated a major significant inverse relationship between SOI and coral growth length at the 4–8 years frequency band. We propose here that coral growth length from the SWSA could be affected by El Nino Southern Oscillation (ENSO) events through an “atmospheric bridge”, in contrast to its direct effect at the Pacific Ocean, related to the increase in sea surface temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8288e797a9788b33695e10d8b33a4425 https://doi.org/10.1007/s00382-007-0271-8 Zobrazit plný text záznamu Plný text ve formátu PDF