Dr. Amos Winter

Dr. Amos Winter
Earth and Environmental Systems, Department of
Arts and Sciences, College of
Science Building 159R
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  • Ph.D. - Geology, Hebrew University of Jerusalem - 1981
  • M.S. - Oceanography, Hebrew University of Jerusalem - 1978
  • B.S. - Biology, Beloit College - 1972

Teaching Interests

  • Oceanography<br>Paleoclimatology<br>Coccolithophores<br>Climate analysis<br>Astronomy

Research Interests

  • Marine micropaleontology<br>Calcareous nannoplankton<br>Paleoceanographic and climate reconstruction from sclerosponges, speleothems (stalagmites), coccolithophores, corals, and climate data

2018 summer (three months) LABEX invited professor Sarboonne University, Paris, France

2017 summer (one month) Guest professor, University Pierre and Marie Curie, Paris, France

Now-2017 Professor: Earth and Environmental Systems Department, Indiana State University, Terre Haute

2015-2017 Chair and Professor: Earth and Environmental Systems Department, Indiana State University, Terre Haute

2014 Guest researcher: Max Planck Institute for Meteorology, Hamburg, Germany

2010 Guest Professor: Université Paul Cézanne / Aix-Marseille, France

2008, 2009 Guest Professor: ETH, Zurich, Switzerland

2015–1996 Professor: Department of Marine Sciences: University of Puerto Rico

2015–1993 Commonwealth Climatologist: Puerto Rico 

2003–2005 Associate Program Director: Marine Geology and Geophysics: NSF

2000–2006 Research Associate, Geosciences: Scripps Inst of Oceanography

1999–2001 Climate Change Outreach Educator: California Space Institute

1999–2000 Visiting Prof., Geosciences: Scripps Institution of Oceanography 

1995 Visiting Scholar, Dept. of Marine Geology: Univ. of Göteborg, Sweden 

1992 Invited Professor, Geology Institute: (ETH), Zurich, Switzerland 

1991 Invited Scholar, Paleoceanography: GEOMAR, Univ.of Kiel, Germany 

1988–1996 Assoc. Professor, Dept of Marine Sciences: Univ. of Puerto Rico 

1982–1987 Sonnenberg Senior Res. Scientist, Marine Geoscience: University of Cape Town 

1982 Postdoctoral fellow: Stanford University, California 

1981 Postdoctoral fellow: Tübingen University, Germany 

1973 Research Assistant: Biologische Anstalt Helgoland, Germany

Introduction to Oceanography
Introduction to Climate Change
Quaternary Geolgy
Introduction to Astronomy

Beloit College, Wisconsin, Biology, B.Sc. 1972

The Hebrew University of Jerusalem, Israel, Oceanography, M.S.  1978

The Hebrew University of Jerusalem. Israel, Geology, Ph.D. 1981

Tübingen University, Germany, Marine micropaleontology, Post Doc. 1981

Stanford University, California, Marine micropaleontology, Post Doc. 1982



2018 Winter A, Jury M, Sammarco PW,  and Zanchettin D. On the relationship between coral δ13C and Caribbean climate. International Journal of Climatology 38, no. 15 (2018): 5689-5698.

2018 Vieten R. Warken S, Winter A, Schröder-Ritzrau A, Scholz D, Spötl C. Hurricane Impact on Seepage Water in Larga Cave, Puerto Rico. Journal of Geophysical Research Biogeoscience, 123. https://doi.org/ 10.1002/2017JG004218. 

2017 Alpert AE, Cohen AL, Oppo DW, DeCarlo TM, Gaetani GA, Hernandez-Delgado EA, Winter A, Gonneea ME. 20th century warming of the tropical Atlantic captured by Sr-U paleothermometry.  Paleoceanography, 31, no. 2 (2016): 252-265

2016 Vieten R, Winterhalder S, Winter A, Scholz D, Miller T, Spötl C Schröder-Ritzrau, A. Monitoring of Cueva Larga, Puerto Rico – a First Step to Decode Speleothem Climate Records. Karst, Groundwater Contamination & Public Health, special publication. in press.

2016 Vieten R, Winter A, Winterhalder S,  Schrӧder-Ritzrau A, Miller TE. Scholz D.  Seasonal temperature variations controlling cave ventilation processes in Cueva Larga, Puerto Rico.   International Journal of Speleothem, 45(3): 259-273.

2016 Vieten R, Winter A, Samson AVM, Cooper J, Wrapson L, Kambesis PN, Nieves MA, Lace MJ. Quantifying the impact of human visitation in two cave chambers on Mona Island (Puerto Rico): implications for archeological site conservation. Cave and Karst Science. August - 43 (2): 79-85.

2015  Winter A, Zanchettin D, Miller T, Kushnir Y, Black D, Lohmann G, Burnett A, Haug G, Estrella-Martínez J, Breitenbach SFM, Beaufort L, Cheng H. Persistent drying in the tropics linked to natural forcing. Nature Communications

2015 Rivera-Collazo I, Winter A, Scholz D, Mangini A, Miller T, Kushnir Y, Black D. Human adaptation strategies to abrupt climate change in Puerto Rico 3.7kya. Holocene. DOI: 10.1177/0959683614565951

2014 Stephenson TS, Van Meerbeeck CJ, Vincent LA, Allen T, McLean N, Peterson TC Taylor MA, Aaron-Morrison AP, Auguste T, Bernard D, Boekhoudt JRI, Blenman RC, Braithwaite GC, Brown G, Butler M, Cumberbatch CJM, Kirton-Reed L, Etienne-Leblanc S, Lake DE, Martin DE, McDonald JL, Zaruela MO, Porter AO, Ramirez MS, Stoute S, Tamar GA, Trotman AR, Roberts BA, Mitro SS, Shaw A, Spence JM, Winter A. Changes in Extreme Temperature and Precipitation in the Caribbean Region, 1961-2010. International Journal of Climate. Published online in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/joc.38892013 

2013 Winter A, Henderiks J, Beaufort L, Rickaby EMR, Brown CW. Poleward expansion of the coccolithophore Emiliania huxleyi. Journal of Plankton Research - Horizons, doi: 10.1093/plankt/fbt110. March with cover photo!

2012 Henderiks J, Winter A. A transitional Emiliania huxleyi morphotype. Journal of Nannoplankton Research, 32 (2): 71-74 

2012 Henderiks J, Winter A, Elbrächter M, Feistel R, van der Plas A, Nausch G, Barlow R. Environmental controls on Emiliania huxleyi morphotypes in the Benguela coastal upwelling system (SE Atlantic). Marine Ecology Progress Series 448:51-66 DOI: 10.3354/meps095352011 Winter W, Miller T, Kushnir Y, Sinha A, Timmermann A, Jury MR, Gallup C, Cheng H, Edwards RL. Evidence for 800 years of North Atlantic multi-decadal variability from a Puerto Rican speloethem. EPSL 308:23-28 DOI:10.1016/l.epsl.2011.05.028.

2010  Kilbourne KH, Quinn TM, Webb R, Guilderson T. Nyberg J, Winter A.  Coral windows onto seasonal climate variability in the northern Caribbean since 1479.  Geochemistry, Geophysics, Geosystems (G cubed), Volume 11 (10), DOI: 10.1029/2010GC003171.

2010 Winter A and Sammarco PW. Lunar banding in the scleractinian coral Montastraea faveolata: fine-scale structure and influence of temperature. J. of Geophys. Res. - Biogeosciences, 115(G04007), 1-12, 2010, DOI: 10.1029/2009JG001264

2010 Swart P, Greer L, Rosenheim B, Moses C, Waite A, Winter A, Helmle K, Dodge R. 13C Suess effect in scleractinian corals mirror changes in the anthropogenic CO2 inventory of the surface oceans. Geophysical Research Letters. VOL. 37, L05604, doi:10.1029/2009GL041397, 2010

2009 Jury M, Winter A. Warming of an elevated layer over the Caribbean. Climate Change, doi:10.1007/s10584-009-9658-3

2008 Nyberg J, Malmgren, BA, Winter A, Jury M, Kilbourne H, Guinn T. Reply. Is recent major hurricane activity normal? Nature 451, E5 (21 February 2008) doi:10.1038/nature06576

2008 Kilbourne KH, Quinn TM, Webb R, Guilderson T, Nyberg J, Winter A. Paleoclimate proxy perspective on Caribbean climate since the year 1751: evidence of cooler temperatures and multidecadal variability Paleoceanography, 23, PA3220, doi:10.1029/2008PA001598.   

2008 Ryan KE, Walsh JP, Corbett DR, Winter A. A record of recent change in terrestrial sedimentation in a coral-reef environment, La Parguera, Puerto Rico: A response to coastal development? Marine Pollution Bulletin, 56(6) :1177-11832007 Nyberg J. Malmgren, BA, Winter A, Jury M, Kilbourne H, Guinn T. Low Atlantic hurricane activity during the 1970s and 1980s compared to the past 270 years. Nature, Vol. 447|7 June 2007| doi:10.1038/nature05895 

2007 Jury, M, Malmgren BA, and Winter, A.  Sub-regional precipitation climate of the Caribbean and relationships with ENSO and NAO.  J. Geophys. Res., VOL. 112, D16107, doi:10.1029/2006JD007541

2007 Ramirez-Beltran ND, Lau William KM, Winter A, Castro, JM, Ramírez-Escalante, N. Empirical probability models to predict Puerto Rico monthly rainfall process. Monthly Weather Review, Vol. 135, No. 3, pp 877-890.

2006 Gallup CD, Olson DG, Edwards RL, Gruhn L, Winter A, and Taylor FW.  Sr/Ca-Sea surface temperature calibration in the branching Caribbean coral Acropora palmate, Geophysical Research Letters 3, LO 3606.  DOI 10.1029/2005GL024935

2006 Sammarco,  P W, Winter A. and Stewart JC. Coefficient of Variation (CV) of Sea Surface Temperature (SST) as an Indicator of Bleaching in Caribbean Corals.  Mar. Biol. 149: 137-1344, DOI 10.1007/s00227-006-0318-0, URL http://dx.doi.org/10.1007/s00227-006-0318-0

2006  Velazquez-Lozada A, Gonzalez  JE, and Winter A . Urban Heat Island Effect Analysis for San Juan, Puerto Rico, Journal of Atmospheric Environment, 40 (9): 1731-1741.

2005  Lal D, Gallup C, Somayajulu  BLK., Vacher L, Caffee MW, Jull AJT, Finkel RC, Speed RC and Winter A. Records of cosmogenic radionuclides, 10Be, 26Al and 36Cl in corals: first studies on coral erosion rates and potential of dating very old corals, Geochim Cosmochim Acta, 69 (24): 5717–5728

2005 Shimamura M, Oba T, Xu G, Lu B, Wang L, Murayama M, Toyoda K, and Winter A.  Fidelity of δ18O as a proxy for sea surface temperature: Influence of variable coral growth rates on the coral Porites lutea from Hainan Island, China.  Geochemistry, Geophysics, Geosystems (G3), 6, Q09017

2004  Harmsen EW, González Pérez A, and Winter A. Re-evaluation of pan evaporation coefficients at seven locations in Puerto RicoJ. Agric. 88(3-4): 109 -122

2003 Quinn PS, Hans RT, Brand LE, and Winter A.  Experimental evidence for the species character of C. leptoporus morphotypes. Journal of Paleontology 77(5): 825-830.

2003 Winter A, Paul A, Nyberg J, Oba T, Lundberg J,  Schrag D, Taggart B. Orbital control of low–latitude seasonality during the Eemian. Geophysical Research Letters 30:10-14.

2002 Winter A, Rost B, Hilbrecht H, Elbrächter M. Vertical and horizontal distribution of coccolithophores in the Caribbean Sea. Geo–Marine Letters 22: 150–161.

2002 Nyberg J, Malmgren BA, Kuijpers A, Winter A.  A centennial–scale variability of subtropical North Atlantic surface hydrography during the late Holocene. Palaeogeography, Palaeoclimatology, Palaeoecology 183:25–41.

2002 Watanabe T, Winter A, Oba T, Anzai R, Ishioroshi H. Evaluation of accuracy in coral isotope records for environmental proxy: A comparative study of skeletal elements, sampling resolution, and different colonies in the coral Montastrea faveolata from Puerto Rico. Coral Reefs 21:169–178.

2001 Watanabe T, Minagawa M, Oba T, Winter A. Pretreatment of coral aragonite for trace elemental analysis: Implications of coral thermometers. Geochemical Journal 35(4):265–269.

2001 Nyberg J, Csapó J, Malmgren BA, Winter A. Changes in the concentrations of 17 amino acids in a scleractinian coral over the last 250 years and their potential utility for age determination.  Organic Geochemistry 32:623–632.

2001 Watanabe T, Winter A, Oba T. Seasonal changes in sea surface temperature and salinity during the Little Ice Age in the Caribbean Sea deduced from Mg/Ca and O–18/O–16 ratios in corals. Marine Geology 173: 21–35.

2000 Winter A,  Oba T, Ishioroshi H, Watanabe T, Christy JR. Tropical sea surface temperatures: two–to–three degrees cooler than present during the Little Ice Age. Geophysical Research Letters, 27: 3365–3368.

2000 Young JR, Thierstein HR, Winter A.  Introduction. Nannoplankton ecology and palaeoecology Marine Micropaleontology 39:7–9.

2000 Jordan RW, Winter, A. Assemblages of coccolithophorids and other living microplankton off the coast of Puerto Rico during January–May 1995. Marine Micropaleontology 39: 113–130.

1999 Winter A, Elbrachter M, Krause G. Subtropical coccolithophores in the Weddell Sea, Deep Sea Research, 46(3): 439–449.

1999 Malmgren B, Winter A.  Climatic Zonation in Puerto Rico Based on Multivariate Statistical Analysis and an Artificial Neural Network. Journal of Climate, 12(4): 977–985.

1998 Jordan RW, Winter A.  Unusual coccolithophorid (haptophyta) specimen from Puerto Rico. Journal of Nannoplankton Research 20: 81–83.

1998 Winter A, Appeldoorn R, Bruckner A, Williams E, Goenaga C. Sea surface temperatures and coral reef bleaching off La Parguera, Puerto Rico (northeastern Caribbean Sea). Coral Reefs, 17: 377–382.

1998 Malmgren B, Winter A, Chen D.   El Niño–Southern Oscillation and North Atlantic Oscillation control of the Puerto Rico climate. Journal of Climate 11: 2713–2717.

1998 Tosteson TR, Ballantine D, Winter A., Sea surface temperatures, benthic dinolafellate toxicity and toxin transmission in the ciguatera food web. In: B. Reguera, J. Blanco, M.L. Fernandez, and T. Wyatt (editors). Harmful Alga, Xunta de Galicia and the intergovernmental oceanographic commission of UNESCO.

1998 Garcia JR, Schmitt C, Heberer C, Winter, A. La Parguaera, Puerto Rico– Caribbean coral reef, seagrass and mangrove sites. Coastal region and small island papers 3, UNESCO, Paris, XIV; 347-352.

1994 Siesser WG. Winter A. Coccolith morphology. In: A. Winter and W.G. Siesser (editors) Coccolithophores. Cambridge University Press, 290 pp.

1994 Winter A, and Siesser WG. Atlas of Living Coccolithophores. In: A. Winter and W.G. Siesser (eds) Coccolithophores. Cambridge University Press, 290 pp.

1994 Winter A, Jordan R, and Roth PH. Biogeography of coccolithophores in oceanic waters. In: A. Winter and W.G. Siesser (editors) Coccolithophores. Cambridge University Press, 290 pp.

1993 Winter A, and Tosteson TR. Ciguatera toxins in the food chain revealed by stable isotopes.  In: Acts of the Fourth International Conference on Ciguatera Fish Poisoning, Bulletin of Soc. Path., Ex., vol. 85. Masson, Paris. pp 510–513.

1991 Winter A, Goenaga C, and Maul GA. Carbon and oxygen isotope time series from an 18 year Caribbean reef coral. Journal of Geophysical Research 96(C9):16673–16678.

1990 Winter A, and Martin K. Late Quaternary history of the Agulhas Current. Paleoceanography 5(4):479–486.

1989 Fincham MJ, and Winter A. Paleoceanographic Interpretation of coccoliths and oxygen isotopes from the sediment surface of the southwest Indian Ocean. Marine Micropaleontology 13:325–351.

1988 Siesser WG, Rogers J, and Winter A. Late Miocene erosion of the Agulhas Moat and the Oligocene position of the Subantarctic surface water.  Marine Geology 80:119–129.

1987 Dingle RV, Birch GF, Bremner RH, De Decker, RH, du Plessis A, Engelbrecht JC, Fincham MJ, Fitton T, Flemming BW, Gentle RI, Goodlad SW, Martin AK, Mills EG, Moir GJ, Parker R.J, Robson SW, Rogers J, Salmon DA, Siesser WG, Simpson ESW, Summerhayes CP, Westall F, Winter A, and Woodborne MW. Deep–Sea sedimentary environments around southern Africa (SE Atlantic and SW Indian Oceans). Annals of the South African Museum 9 8:1–27.

1987 Friedinger P, and Winter A. Distribution of modern coccolithophore assemblages in the area of the Natal Valley (southwest Indian Ocean). Journal of Micropaleontology 6:49–56.

1987 Mitchell–Innes BA, and Winter A. Coccolithophores: a major component in an upwelling plume off the Cape of southern Africa. Marine Biology 95:25–30.

1987 Pokras EM, Winter A. Oceanographic control of Holocene diatom assemblages in laminated sediments near Walvis Bay, southwest Africa. Marine Geology 76:185–194.

1986 Winter A, Stockwell D, Hargraves P. Tintinnid agglutination of coccol­iths: A selective or random process? Marine Micropaleontology 10:375–379.

1985 Winter A. Distribution of living coccolithophores in the California Current System, Southern California Borderland. Marine Micropaleontology 9:385–393.

1984 Reiss Z, Luz B, Almogi–Labin A, Halicz E, Winter A, Erez J. Paleoceanography of the Gulf of Aqaba during the last 150, 000 years.  In: J.A. Coetzee et al. (eds) Palaeoecology of Africa and the surrounding islands 16:55–64.

1983 Winter A, Almogi–Labin A, Erez Y, Halicz E, Luz B, Reiss Z. Salinity tolerance of marine organisms deduced from Red Sea Quaternary record. Marine Geology 53:M17–M22.

1982 Winter A. Paleoenvironmental interpretation of Quaternary coccolith assem­blages from the Gulf of 'Aqaba (Elat), Red Sea. Rev. Esp. de Micropaleontologia 14:291–314.

1982 Winter A. Post–depositi­onal shape modification in Red Sea coccoliths. Micropaleontology 28:319–323.

1980 Reiss Z, Luz B, Almogi–Labin A, Halicz E, Winter A, Wolf M, Ross DA. Late Quaternary paleoceanography of the Gulf of 'Aqaba (Elat), Red Sea. Quaternary Research 14:294–308. (56 citations)

1979 Winter A, Reiss Z, and Luz B. Distribution of living coccolithophore assem­blages in the Gulf of Elat ('Aqaba). Marine Micropaleontology 4:197–223. (50 citations)

1978 Winter A, Reiss Z, and Luz B. Living Gephyrocapsa protohuxleyi McIntyre in the Gulf of Elat ('Aqaba). Micropaleontology 3:295–298