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Interglacial hydroclimate in the tropical West Pacific through the Late Pleistocene
Meckler, A.N.; Clarkson, M.O.; Cobb, K.M.; Sodemann, H.; Adkins, J.F. (2012). Interglacial hydroclimate in the tropical West Pacific through the Late Pleistocene. Science (Wash.) 336(6086): 1301-1304. http://dx.doi.org/10.1126/science.1218340
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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  • Meckler, A.N.
  • Clarkson, M.O.
  • Cobb, K.M.
  • Sodemann, H.
  • Adkins, J.F.

Abstract
    Records of atmospheric carbon dioxide concentration (P-CO2) and Antarctic temperature have revealed an intriguing change in the magnitude of interglacial warmth and P-CO2 at around 430,000 years ago (430 ka), but the global climate repercussions of this change remain elusive. Here, we present a stalagmite-based reconstruction of tropical West Pacific hydroclimate from 570 to 210 ka. The results suggest similar regional precipitation amounts across the four interglacials contained in the record, implying that tropical hydroclimate was insensitive to interglacial differences in P-CO2 and high-latitude temperature. In contrast, during glacial terminations, drying in the tropical West Pacific accompanied cooling events in northern high latitudes. Therefore, the tropical convective heat engine can either stabilize or amplify global climate change, depending on the nature of the climate forcing.

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