Dynamical response of the tropical Pacific Ocean to solar forcing during the Early Holocene
Marchitto, T.M.; Muscheler, R.; Ortiz, J.D.; Carriquiry, J.D.; van Geen, A. (2010). Dynamical response of the tropical Pacific Ocean to solar forcing during the Early Holocene. Science (Wash.) 330(6009): 1378-1381. https://dx.doi.org/10.1126/science.1194887
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
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| Auteurs | | Top |
- Marchitto, T.M.
- Muscheler, R.
- Ortiz, J.D.
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- Carriquiry, J.D.
- van Geen, A.
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| 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 Nino-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 Nina-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 Nino-like (warm) conditions, in apparent agreement with the theoretical "ocean dynamical thermostat" response of ENSO to exogenous radiative forcing. |
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