Dynamical response of the tropical Pacific Ocean to solar forcing during the early Holocene. Journal Article uri icon

Overview

abstract

  • We present a high-resolution magnesium/calcium proxy record of Holocene sea surface temperature (SST) from off the west coast of Baja California Sur, Mexico, a region where interannual SST variability is dominated today by the influence of the El Niño-Southern Oscillation (ENSO). Temperatures were lowest during the early to middle Holocene, consistent with documented eastern equatorial Pacific cooling and numerical model simulations of orbital forcing into a La Niña-like state at that time. The early Holocene SSTs were also characterized by millennial-scale fluctuations that correlate with cosmogenic nuclide proxies of solar variability, with inferred solar minima corresponding to El Niño-like (warm) conditions, in apparent agreement with the theoretical "ocean dynamical thermostat" response of ENSO to exogenous radiative forcing.

publication date

  • December 1, 2010

Full Author List

  • Marchitto TM; Muscheler R; Ortiz JD; Carriquiry JD; van Geen A

Other Profiles

Additional Document Info

start page

  • 1378

end page

  • 1381

volume

  • 330

issue

  • 6009