Papers
Submitted/In preparation
Paine, A.R., W.D. Gosling, T.M. Shanahan, I.M. Fendley, J. Frieling, T.A. Mather, N. McKay, S.A. Robinson, D.M. Pyle, R. Kiely. Moisture availability drives mercury deposition in Lake Bosumtwi, Ghana. Earth and Planetary Science Letters. (in preparation)
Shanahan, T.M., N. Piatrunia*, C. Sun*, V. Todd*, P. DiNezio, Remote forcing of the Southern Hemisphere westerlies. Science (in preparation).
Piatrunia, N.*, T.M. Shanahan, C. Sun*, P. Augustinus, Seasonal controls on the isotopic composition of precipitation in northern New Zealand. Journal of Geophysical Research-Atmospheres. (in preparation)
Shanahan, T.M., N. Piatrunia*, P. Ausustinus, Hydroclimate changes in the Southern Hemisphere mid-latitudes from tetraether lipid indices – a multiproxy perspective. Paleoceanography and Paleoclimatology (submitted)
Todd, V.*, T.M. Shanahan, P. DiNezio, J. Klavans, F. Pausata, A. Legrande, J. Tierney,
Ocean response to hemispheric warming forces Holocene megadrought in the southwestern United States. Science. (submitted)
Sun, C., T.M. Shanahan, S. He, A. Bailey, J. Nusbaumer, J. Hu, A. Hillman, E. Ornouski, J. Warner, K. DeLong, 17O-excess in tropical cyclones reflects local rain re-evaporation more than moisture source conditions. Journal of Geophysical Research Atmospheres. (in review).
DiNezio, P.N., T.M. Shanahan, T. Sun, C. Sun*, X. Wu, A. Lawman, D. Lea, M. Kageyama, U. Merkel, M. Prange, B. Otto-Bliesner, X. Zhang, Global shifts in tropical rainfall amplified by changes in tropical Atlantic sea-surface temperatures. Nature. (in review)
Klavans, J.M., P.N. DiNezio, A.C. Clement, C. Deser, T.M. Shanahan, Human emissions drive the Pacific Decadal Oscillation. Science. (in review)
2023
Sharman, G.R., J.A. Covault, P.P. Flaig, R.Dunn, P. Fussee-Durham, T.E. Larson, T.M. Shanahan, K. Dubois, J.B. Shaw, J. L. Crowley, B. Shaulis IN PRESS. Coastal Response to Global Warming during the Paleocene-Eocene Thermal Maximum. Palaeogeography, Palaeoclimatology, Palaeoecology
2022
Gosling, W.D., C.S. Miller, T.M. Shanahan, P.B. Holden, J.T. Overpeck, F. van Langevelde, 2022. A stronger role for long-term moisture change than for CO2 in determining tropical woody vegetation change. Science, 376(6593), pp.653-656. [link]
*Sun, C., L. Tian, T.M. Shanahan, J.W. Partin, Y. Gao, Y., *N. Piatrunia, J. Banner, 2022. Isotopic variability in tropical cyclone precipitation is controlled by Rayleigh distillation and cloud microphysics. Communications Earth & Environment, 3(1), pp.1-10. [link]
Raposeiro, P.M., A. Hernandez, S. Pla-Rabes, V. Goncalves, R. Bao, A. Saez, N. Aguiar, T. M. Shanahan, M. Benavente, E. DeBoer, H. Marques, M. Matias, C. Pimentel, C. Pereira, N. Richter, C. Ritter, M.J. Rubio, M. Salcedo, P. Sousa, M. Souto, D. Vazquez-Loureiro, V. Vilagut, O. Margalef, L. Amaral-Zettler, A. C. Costa, Y. Huang, J. van Leeuwen, P. Masqu, R. Prego, A., C. Ruiz-Fernandez, J-A. Saachez-Cebza, R. Trigo, S. Giralt, 2022. Reply to Elias et al., Climate facilitated early colonization of the Azores Archipelago during Medieval times, Proceedings of the National Academy of Sciences. 118(41), pp. 1-7. [link]
Raposeiro, P.M., A. Hernandez, S. Pla-Rabes, V. Goncalves, R. Bao, A. Saez, N. Aguiar, T.M. Shanahan, M. Benavente, E. DeBoer, H. Marques, M. Matias, C. Pimentel, C. Pereira, N. Richter, C. Ritter, M.J. Rubio, M. Salcedo, P. Sousa, M. Souto, D. Vazquez-Loureiro, V. Vilagut, O. Margalef, L. Amaral-Zettler, A. C. Costa, Y. Huang, J. van Leeuwen, P. Masqu, R. Prego, A., C. Ruiz-Fernandez, J-A. Saachez-Cebza, R. Trigo, S. Giralt, 2022. Multiproxy evidence of widespread landscape disturbance in multiple Azorean lakes before the Portuguese arrival, Proceedings of the National Academy of Sciences. 119(4), pp. 1-2. [link]
2021
*Sun, C., T.M. Shanahan, P.N. DiNezio, N.P. McKay, P.D. Roy, 2021. Great Plains storm intensity since the last glacial controlled by spring surface warming. Nature Geoscience. 14(12), pp. 912-917. [link]
2020
*Saadeh, C.M., J.E. Saylor, J. Nie, T.M. Shanahan, 2020. Orbital Forcing of Late Miocene-Early Pleistocene Environmental Change in the Zhada Basin, SW Tibetan Plateau, Paleoceanography and Paleoclimatology. 35(8), pp. 1-18. [link]
*Phelps, L.N., M. Chevalier, T.M. Shanahan, J.C. Aleman, C. Courtney-Mustaphi, C.A. Kiahtripes, R. Marchant, O. Broennimann, L.I. Quick, J. Shekeine, B.A.S. Davis, A. Guisan, K. Manning, 2020. Asymmetric response of Forest and Grassy biomes to climate variability across the African Humid Period: influenced by anthropogenic disturbance? Ecography. 43(8), pp.1118-1142. [link]
*Dallmeyer, A., M. Claussen, S. Lorenz, T.M. Shanahan, 2020. The end of the African humid period as seen by transient comprehensive Earth system model simulation of the last 8000 years. Climate of the Past, 16(1), pp. 117-140. [link]
Roy, P.D., G. Vera-Vera, J.L. Sánchez-Zavala, T.M. Shanahan, J.D. Quiroz-Jiménez, J.H. Curtis, P. Girón-García, V.H. Lemus-Neri, G. Muthusankar, 2020. Depositional histories of vegetation and rainfall intensity in Sierra Madre Oriental Mountains (northeast Mexico) since the late Last Glacial. Global and Planetary Change. 187, 103136. pp.1-11. [link]
2019
*Phelps, L.N., O. Broennimann, K. Manning, A. Timpson, G. Mariethoz, B. Davis, A. Guisan, T.M. Shanahan, 2019. Reconstructing the climatic niche breadth of land use for animal production during the African Holocene. Global Ecology and Biogeography, 29(1), pp. 127-147. [link]
*Sun, C., T.M. Shanahan, J. Partin, 2019, Controls on the stable isotopic composition of precipitation over the south central United States. Journal of Geophysical Research. Atmospheres . 124(14), pp. 8320-8335. [link]
2018
*Hanna, A.J.M., T.M. Shanahan, M.A. Allison, T.S. Bianchi, K.M. Schreiner, 2018, A multi-proxy investigation of late-Holocene temperature change and climate-driven fluctuations in sediment sourcing: Simpson Lagoon, Alaska. The Holocene. 28(6), pp. 984-997. [link]
2016
Jardine, P.E., W.T. Fraser, B.H. Lomax, M.A. Sephton, T.M. Shanahan, C.S. Miller, W.D. Gosling, 2016. Pollen and spores as biological recorders of past ultraviolet irradiance. Scientific Reports. 6(1), pp. 1-8. [link]
*Kar, N., C.N. Garzione, C. Jaramillo, T.M. Shanahan, V. Carlotto, A. Pullen, F. Moreno, F., V. Anderson, E. Moreno, J. Eiler, 2016. Rapid regional surface uplift of the northern Altiplano plateau revealed by multiproxy paleoclimate reconstruction. Earth and Planetary Science Letters. 447, p. 33-47. [link]
*Hanna, A.J.M., T.M. Shanahan, M.A. Allison, 2016. Distribution of branched GDGTs in surface sediments from the Colville River, Alaska: Implications for the MBT/CBT paleothermometer in Arctic marine sediments. Journal of Geophysical Research-Biogeosciences. 121, pp. 1762-1780. [link]
Nash, D.J., *G. De Cort, B.M. Chase, D. Verschuren, S.E. Nicholson, T.M. Shanahan, A. Asrat, A.M. Lezine, S.W. Grab, 2016. African hydroclimatic variability during the last 2000 years. Quaternary Science Reviews. 154, pp. 1-22. [link]
Saylor, J.E., *L. Casturi, T.M. Shanahan, J.S. Nie, *C.M. Saadeh, 2016. Tectonic and climate controls on Neogene environmental change in the Zhada Basin, southwestern Tibetan Plateau. Geology. 44, pp. 919-922. [link]
Shanahan, T.M., K.A. Hughen, N.P. McKay, J.T. Overpeck, C.A. Scholz, W.D. Gosling, C.S. Miller, J.A. Peck, J.W. King, C.W. Heil, 2016. CO2 and fire influence tropical ecosystem stability in response to climate change. Scientific Reports. 6, p.1-8. [link]
2015
Wolaver, B.D., J.C. Coogan, B.K. Horton, L.S. Bermudez, A.Y. Sun, T.F. Wawrzyniec, T.W. Zhang, T.M. Shanahan, D.B. Dunlap, R.A. Costley, L. de la Rocha, 2015. Structural and hydrogeologic evolution of the Putumayo basin and adjacent fold-thrust belt, Colombia. AAPG Bulletin. 99, pp. 1893-1927. [link]
Sánchez, N., A. Mora, M. Parra, D. Garcia, M. Cortes, T.M. Shanahan, R. Ramirez, O. Llamosa, M. Guzman, 2015. Petroleum system modeling in the Eastern Cordillera using geochemistry and timing of thrusting and deformation. AAPG Bulletin. 99, pp. 1537-1556. [link]
*Santillan, E., T.M. Shanahan, C.R. Omelon, J.R. Major, P.C. Bennett, 2015. Isolation and Characterization of a CO2-Tolerant Lactobacillus Strain from Crystal Geyser, UT. Frontiers in Earth Science. 3(41), pp. 1-11. [link]
*Anderson, V.J. T.M. Shanahan, J.E. Saylor, B.K. Horton, 2015. Paleoelevation records from lipid biomarkers: Application to the tropical Andes, GSA Bulletin. 27 (11-12), pp. 1604-1616. [link]
Shanahan, T.M., N. McKay, K.A. Hughen, J.T. Overpeck, B. Otto-Bliesner, J.A. Peck, C. Scholz, C.W. Heil, J. King, 2015. The time-transgressive termination of the African Humid Period. Nature Geoscience. 8, pp. 140-144. [link]
*Wicks, T.Z., *K. Thirumalai, T.M. Shanahan, C.J. Bell, 2015. The use of δ13C values of leporid teeth as indicators of past vegetation. Palaeogeography, Palaeoclimatology, Palaeoecology. 418, pp.245-260. [link]
2014
*Anderson, V.J. T.M. Shanahan, J.E. Saylor, B.K. Horton, 2013, Sources of local and regional variability in the MBT’/CBT paleotemperature proxy: Insights from a modern elevation transect across the Eastern Cordillera of Colombia. Organic Geochemistry. 69, pp. 42-51. [link]
Shanahan, T.M., A. Hughen, B.A.S. Van Mooy, 2013, Temperature sensitivity of branched and isoprenoid GDGTs in Arctic lakes. Organic Geochemistry. 64, pp. 119-128. [link]
Shanahan, T.M., A. Hughen, L. Ampel, P.E. Sauer. 2013, Environmental controls on the 2H/H values of terrestrial leaf waxes in the Eastern Canadian Arctic. Geochimica et Cosmochimica. 119, pp. 286-301. [link]
PAGES 2K Consortium. 2013, Continental-scale temperature variability during the past two millennia. Nature Geoscience. 6, pp. 339-346. [link]
*Stoynova, V., T.M. Shanahan, A. Hughen, A. deVernal. 2013 Insights into Circum-Arctic Sea Ice Variability from Molecular Geochemistry. Quaternary Science Reviews. 79, pp. 63-73. [link]
Nicholson, S.E., D.J. Nash, B.M. Chase, S.W. Grab, D. Verschuren, T.M. Shanahan, A. Asrat, A.-M. Lezine, M. Umer. Temperature variability over Africa during the last 2000 years, The Holocene. 23, pp. 1085-1094. [link]
Shanahan, T.M., N. McKay, T. Overpeck, J.A. Peck, C. Scholz, C.W. Heil, J. King, 2013. Spatial and temporal variability in sedimentological and geochemical properties of sediments from an anoxic crater lake: implications for paleoenvironmental reconstructions. Palaeogeography, Palaeoclimatology, Palaeoecology. 374, pp. 96-109. [link]
Shanahan, T.M., J.A. Peck, N. McKay, C.W. Heil, J. King, S.L. Forman, D.L. Hoffmann, D.A. Richards, T. Overpeck, C. Scholz, 2013. Age models for long lacustrine sediment records using multiple dating approaches – an example from Lake Bosumtwi, Ghana. Quaternary Geochronology. 15, pp. 47-60. [link]
2012
Shanahan, T.M., J.W. Beck, J.T. Overpeck, N. McKay, J.E. Pigati, J.A. Peck, C. Scholz, J. King. 2012. Late Quaternary sedimentological and climate changes at Lake Bosumtwi Ghana: new constraints from laminae analysis and radiocarbon age modeling: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 361, pp. 49-60.
2009
Shanahan, T.M., Overpeck, J.T., Anchukaitis, K.J., Beck, J.W., Cole, J.E., Dettman, D.L., Peck, J.A., Scholz, C.A., and King, J.W., 2009, Atlantic Forcing of Persistent Drought in West Africa: Science, v. 324, p. 377-380.
Schouten, S., Hopmans, E.C., van der Meer, J., Mets, A., Bard, E., Bianchi, T.S., Diefendorf, A., Escala, M., Freeman, K.H., Furukawa, Y., Huguet, C., Ingalls, A., Menot-Combes, G., Nederbragt, A.J., Oba, M., Pearson, A., Pearson, E.J., Rosell-Mele, A., Schaeffer, P., Shah, S.R., Shanahan, T.M., Smith, R.W., Smittenberg, R., Talbot, H.M., Uchida, M., Van Mooy, B.A.S., Yamamoto, M., Zhang, Z.H., and Damste, J.S.S., 2009, An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry: Geochemistry Geophysics Geosystems, v. 10.
Pigati, J.S., Bright, J.E., Shanahan, T.M., and Mahan, S.A., 2009, Late Pleistocene paleohydrology near the boundary of the Sonoran and Chihuahuan Deserts, southeastern Arizona, USA: Quaternary Science Reviews, v. 28, p. 286-300.
2008
Shanahan, T.M., Overpeck, J.T., Sholz, C.A., Beck, J.W., Peck, J., and King, J.W., 2008, Abrupt changes in the water balance of tropical West Africa during the late Quaternary Journal of Geophysical Research-Atmospheres, v. 113, p. D12107.
Shanahan, T.M., Overpeck, J.T., Hubeny, J.B., King, J., Hu, F.S., Hughen, K., Miller, G., and Black, J., 2008, Scanning micro-X-ray fluorescence elemental mapping: A new tool for the study of laminated sediment records: Geochemistry Geophysics Geosystems, v. 9.
Conroy, J.L., Overpeck, J.T., Cole, J.E., Shanahan, T.M., and Steinitz-Kannan, M., 2008, Holocene changes in eastern tropical Pacific climate inferred from a Galapagos lake sediment record: Quaternary Science Reviews, v. 27, p. 1166-1180.
Shanahan, T. M., Overpeck, J. T., J.W.Beck, Wheeler, C. W., Peck, J. A., King, J. W., and Scholz, C. A., 2008. The formation of biogeochemical laminations in LakeBosumtwi, Ghana, and their usefulness as indicators of past environmental changes. Journal of Paleolimnology
2007
Shanahan T. M., Overpeck J. T., Sholz C., Sharpe E., and Arko J., 2007 Simulating the response of a closed basin lake to recent climate and land-use changes in tropical West Africa (Lake Bosumtwi, Ghana). Hydrological Processes 21 (13) 1678-1691
Scholz, C.A., T.C. Johnson, A.S. Cohen, J.W. King, J.P., J.T. Overpeck, M.R. Talbot, E.T. Brown, L .Kalindekafe, P.Y.O. Amoako, R.P. Lyons, T.M. Shanahan, I.S. Castaneda, C.W. Heil, S.L. Forman, L.R. McHargue, K.R. Beuning, J.Gomez, and J. Pierson, East African megadroughts between 135 and 75 kyr ago and implications for early human history. Proceedings of the National Academy of Sciences, 10.1073/pnas.0703874104.
2006
Shanahan T. M., Overpeck J. T., Beck J. W., Pigati J., Wheeler C. W., Talbot M. R., Scholz C. A., Peck J., and King J. W., (2006), Paleoclimatic variations in West Africa from a record of late Pleistocene and Holocene lake level stands of Lake Bosumtwi, Ghana. Palaeoceanography, Palaeoclimatology, Palaeoecology 242 (3-4), 287-302.
2005
Shanahan, T. M., Pigati, J. S., Dettman, D. L., and Quade, J. (2005), Isotopic variability in the aragonite shells of freshwater gastropods living in springs with nearly constant temperature and isotopic composition. Geochimica Et Cosmochimica Acta 69(16), 3949-3966.
2004
Pigati, J.S., Quade, J., Shanahan, T.M., and Haynes, C.V., 2004, Radiocarbon dating of minute gastropods and new constraints on the timing of late Quaternary spring-discharge deposits in southern Arizona, USA: Palaeogeography Palaeoclimatology Palaeoecology, v. 204, p. 33-45.
Peck J. A., Green R. R., Shanahan T., King J. W., Overpeck J. T., and Scholz C. A. 2004 A magnetic mineral record of Late Quaternary tropical climate variability from Lake Bosumtwi, Ghana. Palaeogeography Palaeoclimatology Palaeoecology 215(1-2), 37-57.
2000
Shanahan, T. M., and M. Zreda, 2000 Chronology of Quaternary glaciations in East Africa: Earth and Planetary Science Letters, v. 177, p. 23-42.
1997
Giletti, B.J., and Shanahan, T.M. 1997 Alkali diffusion in plagioclase feldspar: Chemical Geology, v. 139; 1-4, p. 3-20.