Rosanne D'Arrigo, Rob Wilson, Jonathan Palmer, Paul Krusic, Ashley Curtis, John Sakulich, Satria Bijaksana, Siti Zulaikah, La Ode Ngkoimani, Alexander Tudhope
The west Pacific warm pool is the heat engine for the globe's climate system. Its vast moisture and heat exchange profoundly impact conditions in the tropics and higher latitudes. Here, September-November sea surface temperature (SST) variability is reconstructed for the wann pool region (15°S-5°N, 110-160°E) surrounding Indonesia using annually resolved teak ring width and coral δ18 O records. The reconstruction dates from A.D. 1782-1992 and accounts for 52% of the SST variance over the most replicated period. Significant correlations are found with El Nino-Southern Oscillation (ENSO) and monsoon indices at interannual to decadal frequency bands. Negative reconstructed SST anomalies coincide with major volcanic eruptions, while other noteworthy extremes are at times synchronous with Indian and Indonesian monsoon drought, particularly during major warm ENSO episodes. While the reconstruction adds to the sparse network of proxy reconstructions available for the tropical Indo-Pacific, additional proxies are needed to clarify how warm pool dynamics have interacted with global climate in past centuries to millennia. Copyright 2006 by the American Geophysical Union.
Tree Ring Laboratory, Lamont-Doherty Earth Observatory, Palisades, NY, United States; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom; Department of Archaeology and Palaeoecology, Lincoln University, Canterbury, New Zealand; Department of Physics, Bandung Technical University, Bandung, Indonesia; Jurusan Fisika, Universitas Haluoleo, Sulawesi, Indonesia; Department of Physics, Institut Teknologi Bandung, Bandung, 40132, Jalan Ganesha 10 Bandung, Indonesia; Tree-Ring Lab, Lamont-Doherty Earth Observatory, Palisades, NY 10964, 61 Route 9w, United States; Jurusan Fisika FMIPA, Universitas Haluoleo, Kendari, Southeast Sulawesi 93232, Indonesia; Department of Archaeology and Palaeoecology, Lincoin University, Canterbury 8150, Ellesmere Junction Road/Springs Road, New Zealand; School of Geosciences, University of Edinburgh, Edinburgh EH9 3JW, West Mains Road, United Kingdom; Department of Physics, State University of Jakarta, Jakarta 13220, Jl. Rawamangun Muka, Indonesia
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