Abrupt Shift in Subsurface Temperatures in the Tropical Pacific Associated with Changes in El Niño-Reference-Cited by-同舟云学术

Abrupt Shift in Subsurface Temperatures in the Tropical Pacific Associated with Changes in El Niño

Published:1998-07-10 Issue:5374 Volume:281 Page:240-243
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Guilderson Thomas P.¹,Schrag Daniel P.¹

Affiliation:

1. T. P. Guilderson, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA, and Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. D. P. Schrag, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA.

Abstract

Radiocarbon ( 14 C) content of surface waters inferred from a coral record from the Galápagos Islands increased abruptly during the upwelling season (July through September) after the El Niño event of 1976. Sea-surface temperatures (SSTs) associated with the upwelling season also shifted after 1976. The synchroneity of the shift in both 14 C and SST implies that the vertical thermal structure of the eastern tropical Pacific changed in 1976. This change may be responsible for the increase in frequency and intensity of El Niño events since 1976.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference42 articles.

1. The 1990-1995 El Niño-Southern Oscillation Event: Longest on Record

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