Braddock K. Linsley (Ph.D., 1990, University of New Mexico, Albuquerque)

(518) 442-4478 email

Professor

BKL,AS,JW,Ba,Cy w/cores Fiji 2004Allisons Island, Nomuka Group, Tonga 2004Fiji AB top viewFiji AB side view

Current Research Interests:

Brad Linsley cruising off Tambora - link to larger jpegBrad drilling at Clipperton Atoll - link to 34K .jpgDuring the past several years my research has involved the generation of stable isotopic and geochemical time-series data from Pacific Ocean corals and sediment cores for paleoclimatic reconstruction at resolutions that range from sub-seasonal to millennia. This high resolution is only preserved in certain marine environments and is essential for understanding the modes of climatic variability in the past. A better understanding of past climatic variability will help assess the potential anthropogenic component of global climate.

Current research projects include:


Our main laboratory has a light stable isotope mass spectrometer capable of analysis of the isotopes of H, C, N, O and S in carbonates, water, sediment and organic samples.
research sites on SST, precip maps - link to 125K .pngLocation of Research Sites in Relation to Annually-Averaged Sea Surface Temperature and Precipitation [467K .png]

Graduate students supervised by Professor B.K. Linsley at the University at Albany

Selected Publications

Oppo, D.W., Y. Rosenthal, B.K. Linsley, 2009. 2000-year-long temperature and hydrology reconstructions from the Indo-Pacific Warm Pool; Nature, 460, 1113-1116. [PDF file, full text]

Alt, T.R., J.E. Cole, M.N Evans, H. Barnett, N.J. Abram, A.W. Tudhope, B.K. Linsley, 2009. Intensified decadal variability in tropical climate during the late 19th century.  Geophysical Research Letters, 36, L08602, doi:10.1029/2008GL036924. [PDF file, full text]

Langton, S.J., B.K. Linsley, R.S. Robinson, Y. Rosenthal, D.W. Oppo, T.I. Eglinton, S.S. Howe, Y.S. Djajadihardja, F. Syamsudin, 2008. 3500 yr record of centennial-scale climate variability from the Western Pacific Warm Pool. Geology, 36 (10), 795–798. [PDF file, full text]

Linsley, B.K. , P. Zhang, A. Kaplan, S.S. Howe, G. M. Wellington, 2008. Interdecadal-decadal climate variability from multicoral oxygen isotope records in the South Pacific Convergence Zone region since 1650 AD. Paleoceanography, 23,  PA2219, pp. 1-16;  doi:10.1029/2007PA001539. [PDF file, full text]

Yasuhara, M., T. M. Cronin, P. B. deMenocal, H. Okahashi, and B. K. Linsley, 2008. Abrupt Climate Change and Collapse of Deep-Sea Ecosystems. Proceedings of the National Academy of Sciences, 105, (5), 1556-1560. [PDF file, full text]

Rosenthal, Y., B.K. Linsley, Mg/Ca and Sr/Ca Paleothermometery from Calcareous Marine Fossils, chapter in the Encyclopedia of Quaternary Sciences, Elsevier Ltd., 2006. [PDF file, full text]

Yuan, F., B.K. Linsley, S.P. Lund, J.P. McGeehin, and S.S. Howe, Late Holocene lake-level reconstruction based on a sediment record at decadal resolution from Walker Lake, Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology,  240, 497-507. [PDF file, full text]

Yuan, F., B.K. Linsley, and S.S. Howe, Evaluating sedimentary geochemical lake-level tracers in Walker Lake, Nevada over the last 200 years. Journal of Paleolimnology, C-2, 36, 37-54. [PDF file, full text].

Linsley, B.K., A. Kaplan, Y. Gouriou, J. Salinger, P.B. deMenocal, G.M. Wellington, and S.S. Howe, 2006.  Tracking the extent of the South Pacific Convergence Zone since the early 1600s, Geochem. Geophys. Geosyst., 7, Q05003, doi:10.1029/2005GC001115. [PDF file, full text]

Rosenthal, Y., C.H. Lear, D.W. Oppo, and B.K. Linsley, 2006.  Temperature and carbonate ion effects on Mg/Ca and Sr/Ca ratios in benthic foraminifera: Aragonitic species Hoeglundina elegans, Paleoceanography, 21, PA1007, doi:10.1029/2005PA001158. [PDF file, full text]

Bagnato, S., B.K. Linsley, S.S. Howe, G.M. Wellington, S.J. Salinger, 2005. Coral oxygen isotope records of interdecadal climate variations in the South Pacific Convergence Zone region, Geophys. Geochem. Geosys., vol 6 (6), Q06001, doi: 10.1029/2004GC000879. [PDF file, full text]

D’Arrigo, R., R. Wilson, C. Deser, G. Wiles, E. Cook, R. Villalba, S. Tudhope, J. Cole, B.K. Linsley, 2005. Tropical climate linkages over the past four centuries, Journal of Climate, 18, 5253-5265. [PDF file, full text]

Yuan, F., B.K. Linsley, S.P. Lund, J.P. McGeehin, 2004. A 1200 year record of hydrologic variability in the Sierra Nevada from sediments in Walker Lake, Nevada, Geophys. Geochem. Geosys., vol. 5 (3), 1003, Q03007, doi:10.1029/2003GC000652. [PDF file, full text]

Bagnato, S., B.K. Linsley, S.S. Howe, G.M. Wellington, J. Salinger, 2004. Evaluating the use of the massive coral Diploastrea helipora for paleoclimate reconstruction, Paleoceanography, vol. 19, PA1032, doi:10.1029/2003PA000935. [PDF file, full text]

Linsley, B.K., G.M. Wellington, D.P. Schrag, L. Ren, M.J. Salinger, A.W. Tudhope, 2004. Coral evidence for changes in the amplitude and spatial pattern
of South Pacific interdecadal climate variability over the last 300 years, Climate Dynamics, vol. 22: 1-11 doi: 10.1007/s00382-003-0364-y. [PDF file, full text]
[P. lutea core x-ray PDF file image - enlargement of Fig. 2] [P. lutea in Savusavu Bay, Fiji - jpeg image]

Elliot, M., P.B. deMenocal, B.K. Linsley, S.S. Howe, 2003. Environmental controls on the seasonal isotopic records of Mercenaria mercenaria and potential
applications to paleoenvironmental studies,  Geophys. Geochem. Geosys. vol. 4, (7), 1056, doi:10.1029/2002GC000425. [PDF file, full text]

Rosenthal, Y., D.W. Oppo, B.K. Linsley, 2003. The amplitude and phasing of climate change during the last deglaciation in the Sulu Sea, western equatorial Pacific, Geophysical Research Letters, vol. 30, (8),1428, doi:10.1029/2002GL016612. [PDF file, full text]

Benson, L., B.K. Linsley, J. Smoot, S. Mensing, S. Lund, S. Stine, A. Sarna-Wojcicki, 2003. Influence of the Pacific Decadal Oscillation (PDO) on the climate of the Sierra Nevada, California and Nevada,  Quaternary Research, vol. 59, 151-159. [PDF file, full text]

Ren, L., B.K. Linsley, G.M. Wellington, D.P. Schrag, and O.Hoegh-Guldberg, 2003. Deconvolving the d18Oseawater Component from Subseasonal Coral d18O and Sr/Ca at Rarotonga in the Southwestern Subtropical Pacific for the period 1726-1997, Geochimica et Cosmochimica. Acta, vol 67, (9), 1609-1621. [PDF file, full text]

Oppo, D.W., B.K. Linsley, Y. Rosenthal, S. Dannenmann, and L. Beaufort, 2003, Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific, Geophys. Geochem. Geosys., vol 4 (1), 1003, doi:10.1029/2001GC00260.[abstract] [PDF file, full text]

Dannenmann, S., B.K. Linsley*, D. W. Oppo Y. Rosenthal, and L. Beaufort-, 2003, East Asian monsoon forcing of suborbital variability in the Sulu Sea during Marine Isotope Stage 3:  Link to northern Hemisphere climate, (*=corresponding author), Geophys. Geochem. Geosys., vol 4, (1), 1001, doi: 10.1029/2002GC00390. [abstract] [PDF file, full text]

Schrag, D. P., and B. K. Linsley, 2002, Corals, Chemistry and Climate (Perspective), Science, vol. 296, 277-278. PDF file

Evans, M.N., M.A. Cane, D.P. Schrag, A. Kaplan, B.K. Linsley, R. Villalba, and G.M. Wellington, 2001,  Support for tropically-driven Pacific decadal variability based on paleo-proxy evidence,  Geophysical Research Letters, vol 28, no. 19, 3689-2692. [PDF file, full text]

de Garidel-Thoron, T., L. Beaufort, B.K. Linsley, and S. Dannenmann, 2001, Millennial-scale  Dynamics of the East Asian Winter Monsoon during the last 200,000 years,   Paleoceanography, 16, no. 5, 491-502. [PDF file, full text]

Linsley, B.K., G. M. Wellington, and D.P. Schrag, 2000, Decadal Sea Surface Temperature Variability in the Sub-tropical South Pacific from 1726 to 1997 A.D.  Science, vol. 290, 1145-1148. [abstract] [Science - Abstract][Science - Full text, free access]  [NOAA WDC Paleo Archive [abstract, data and figures]

Linsley, B.K., L. Ren, R.B. Dunbar, and S.S. Howe, 2000, ENSO and decadal-scale climate variability at 10°N in the Eastern Pacific from 1893 to 1994;  A coral-based reconstruction from Clipperton Atoll, Paleoceanography, vol 15, no. 3, 322-335 . [PDF file, full text]

Guilderson, T. P., D.P. Schrag, E. Goddard, M. Kashgarian, G. M. Wellington, B.K. Linsley, 2000, Southwest subtropical Pacific surface water radiocarbon in a high-resolution coral, Radiocarbon, vol 42, no 1,  249-256. [PDF file, full text]

Linsley, B.K.; Messier, R.G., and Dunbar, R.B., 1999, Assessing between colony oxygen isotope variability in the  coral Porites lobata  at Clipperton Atoll, Coral Reefs, 18(1), 13-27 . PDF file, full text

Linsley, B.K., 1996, Oxygen isotope evidence of sea level and climatic variations in the Sulu Sea over  the past 150,000 years.,  Nature, vol 380, p234-237. [PDF file, full text]

Linsley, B.K., R.B. Dunbar, G.M. Wellington, and D.A. Mucciarone, 1994,  A coral based reconstruction of Intertropical Convergence Zone variability over Central America since 1707, Journal of Geophysical Research, vol 99, no. C5, 9977-9994. [PDF file, full text]

Linsley, B.K., and Thunell, R.C., 1990, The record of deglaciation in the Sulu Sea: Evidence for the Younger Dryas event in the tropical western Pacific. in  J.P. Kennett, ed., Paleoceanography, Special Issue on the Younger Dryas, 5, no. 6, 1025-1039. [PDF file, full text]
 

Coral core xray - link to 190K .pngX-ray image of coral core, Clipperton Atoll [190K .png]

Greg Brosnan, Tonga 11/2004
In memory of Greg Brosnan ("Broz").  The only person I have known to ask for a drink of water while drilling a coral 10m down.  Greg was instrumental in the success of our Fiji-Tonga November 2004 drilling and helped advance the state of underwater coral drilling. He died tragically in a glider accident in New Zealand in January 2005.

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