RESEARCH INTERESTS
My primary research interests are in glacial geology and paleoclimatology. I have worked for the past two decades studying glacial changes and climate variation in the Pacific Northwest, largely in coastal Alaska. This work has recently been expanded to include glacier and tree-ring records from the Russian Fareast. These projects are supported primarily by the National Science Foundation, the National Oceanographic and Amospheric Administration and the National Geographic Society and are in collaboration with Drs. Gordon C. Jacoby and Rosanne D'Arrigo of Lamont-Doherty Earth Observatory Tree Ring Lab. Most recently we have begun work on the tree-ring and glacial record in Glacier Bay National Park and Preserve. This work is in collaboration with Dr. Dan Lawson of CRREL in Hanover, New Hampshire.

In addition to the work in Alaska, we are developing a research program in the Quaternary (last 1.6 million years) geology of Ohio. We are working with archaeologists and geologists from around Ohio and at Lamont to develop tree-ring records from old growth oak forests and historical buildings, to reconstruct post-glacial histories from bogs and lakes, and to document Holocene through settlement climate and landscape changes from alluvial sediments. Much of this work and some of the Alaska projects are in collaboration with Dr. Tom Lowell of the University of Cincinnati. Below is a list of abstracts and presentations by students as well as research publications and recent reports.

RESEARCH EXPERIENCE
Columbia University, Lamont-Doherty Earth Observatory, Adjunct Associate Research Scientist 1996-present, Associate Research Scientist 1995-1996
Byrd Polar Research Center, The Ohio State University, Adjunct Research Associate 2006-present
Lamont-Doherty Post-Doctoral Fellowship 1993-1995

SELECTEDACTIVITIES
Contributing author to Chapter 6 (Paleoclimate) of the Working Group I, IPCC Fourth Assessment Report, 2007.
Supervised and coadvised 32 undergraduate theses primarily in Alaska (24) and Ohio.
Member of the U.S. National Academies of Science – U.S. National Committee for the International Union for Quaternary Research (2008 to present).
Associate Editor, Tree Ring Research (2002-present)
Manager of the COWO (The College of Wooster) Seismic Station – a seismic station part of Ohioseis and located in Scovel Hall in the Geology Department (http://140.103.104.56/).
Director and founder of the Wooster GIS Lab and Wooster Tree Ring Lab (http://www3.wooster.edu/treering/).

RECENT RESEARCH PUBLICATIONS (Wooster students in italics)
Wiles, G. C., Barclay, D. J. and Young, N, E., 2010, Lichenometric Dating of Moraines in Alaska: A Review and Comparison with Independent Glacial Records, Geografiska Annular.

Wiles, G.C., Krawiec, A.C., and D’Arrigo, R.D., 2009 in press, A 265-Year Reconstruction of Lake Erie Water Levels Based on North Pacific Tree Rings: Geophysical Research Letters, doi: 2008gl037164.

Barclay, D.J., Wiles, G.C. and Calkin, P.E., 2009 in press, Holocene glacier fluctuations in Alaska: Quaternary Sciences Review.

Barclay, D.J., Wiles, G.C. and Calkin, P.E., 2009, Tree-ring cross-dates for a first millennium AD advance of Tebenkof Glacier, southern, Alaska: Quaternary Research, 71: 22-26, doi:10.1016/j.yqres.2008.09.005.

Wiles, G.C., Barclay, D.J., Calkin, P.E., and Lowell, T.V., 2008, Century to Millennial-Scale Temperature Variations for the Last Two Thousand Years Inferred from Glacial Geologic Records of Southern Alaska: Global and Planetary Change, 57, doi:10.1016/j.gloplacha.2006.07.036.

Solomina, O., Haeberli, W., Kull, C. and Wiles, G., 2008, Historical and Holocene Glacier-climate variations: general concepts and overview: Global and Planetary Change, 57, doi:10.1016/j.gloplacha.2007.02.001.

Barclay, D.J., Wiles, G.C. and Calkin, P.E., in press, 2008, Tree-ring cross-dates for a fist millennium AD advance of Tebenkof Glacier, southern, Alaska: Quaternary Research.

Barber, V.A., Juday, G.P., Osterkamp, T., D'Arrigo, R., Berg, E., Buckley, B., Hinzman, L, Huntington, H., Jorgensen, T., McGuire, D., Riordan, B., Whiting, B., Wiles, G. Wilmking, M., 2008, Synthesis of Recent Climate Warming Effects on Terrestrial Ecosystems of Alaska: in Climate Warming in Western North America/Evidence and Environmental Effects, Ed. Frederic H. Wagner, University of Utah Press.

Moore, T., Malcomb, N. and Wiles, G.C., 2007, Climate response of Dahurian Larch in Secrest Arboretum, Wooster,Ohio, USA: Tree Ring Research.

Lutz, B., Wiles, G.C., Lowell, T.V., and Michaels, J., 2007, The 8200 abrupt climate change in Brown’s Lake, Northeast Ohio: Quaternary Research.

Wilson, R., Wiles, G., D’Arrigo, R. and Zweck, C.. 2007, Cycles and shifts: 1300-years of multidecadal temperature variability in the Gulf of Alaska: Climate Dynamics, 28: 425-440, DOI 10.1007/s00382-006-0194-9.

Reyes, A.V., Wiles, G.C. Smith, D.J., Barclay, D.J., Allen, S., Jackson, S., Larocque, S., Laxton, S., Lewis, D. Calkin, P.E. and Clague, J.J., 2006, Expansion of alpine glaciers in Pacific North America in the first millennium AD: Geology, v. 34, p. 57-60, doi:10.1130/G21902.1.

Solomina, O., Wiles, G.C., Shiraiwa, T., and D’Arrigo, R., 2006, Multiproxy records of climate variability for Kamchatka for the past 400 years: Climate of the Past, 2, 1051-1073, SRef-ID: 1814-9359/cpd/2006-2-1051

Barclay, D.J., Gloss Barclay, J.L., Calkin, P.E. and Wiles G.C., 2006, A revised and extended Holocene history of Icy Bay, southern Alaska: Arctic, Antarctic and Alpine Research, v. 38, p. 153-162.

D'Arrigo, R.D., Wilson, R.J., Deser, C., Wiles, G., Cook, E.R., Villlalba, R., Tudhope, A., Cole, J., and Linsley, B., 2005, Tropical-North Pacific climate linkages over the past four centuries: Journal of Climate, v. 18, pp. 5253-5265, doi:10.1175/JCLI3602.1.

Villalba, R.  Luckman, B.H., Boninsegna, J.1, D'Arrigo, R.D., Lara, A., Villanueva-Diaz,  J. , Masiokas, M.1,, Argollo, J., Soliz, C., LeQuesne, C., Stahle, D., Roig, F., Aravena,  J.C., Wiles, G., Hartsough, P.,  in press, 2006, Dendroclimatology from regional to continental scales: Understanding regional processes to reconstruct large-scale climatic variations  across the Western Americas: in M. Hughes, T. Swetnam and H. Diaz, Dendroclimatology: Progress and prospects, Springer.

Driscoll, W., Wiles G.C., D'Arrigo, R.D., and Wilmking, M., 2005, Divergent tree growth response to recent climatic warming, Lake Clark National Park and Preserve, Alaska: Geophysical Research Letters, v. 32, L20703, doi:10.1029/2005GL024258.

Wiles, G.C., D'Arrigo, R.D., Villalba, R., Calkin, P.E. and Barclay, D.J., 2004, Century-scale solar variability and Alaskan temperature change over the past millennium: Geophysical Research Letters, v.31, L15203, doi:10.1029/200GL020050.

Davi, N.K., Jacoby, G.C., and Wiles, G.C., 2003, Boreal temperature variability inferred from maximum latewood density and tree-ring width data, Wrangell Mountain Region, Alaska: Quaternary Research, 60, 252-262.

Wiles, G.C., McAllister, R.P., Davi, N.K. and Jacoby, G.C., 2003, Eolian response to Little Ice Age climate change, Tana Dunes, Chugach Mountains, Alaska: Arctic, Antarctic and Alpine Research, v. 35, n.1, p. 67-73.

Barclay, D.J., Wiles, G.C. and Calkin, P.E., 2003, An 850-year record of climate and fluctuations of the tidewater-calving Nellie Juan Glacier, South central Alaska: Annals of Glaciology, v.36, p. 51-56.

Wiles, G.C., Jacoby, G.C., Davi, N.K., and McAllister, R.P., 2002, Late Holocene glacial fluctuations in the Wrangell Mountains, Alaska: Geological Society of America Bulletin, v. 114, p. 896-908.

D'Arrigo, R., R. Villalba and G. Wiles, 2001, Tree-ring estimates of Pacific decadal climate variability, Climate Dynamics, v. 18, p. 219-224.

Calkin, P.E., Wiles, G.C., and Barclay, D.J., 2001, Holocene coastal glaciation of Alaska: Quaternary Science Reviews, 20, p. 449-461.

Barclay, D.J., Calkin, P.E. and Wiles, G.C., 2001, Holocene history of Hubbard Glacier in Yakutat Bay and Russell Fjord, Southern Alaska: Geological Society of America Bulletin, v. 113, p.388-402.

Villalba, R., D'Arrigo, Cook, E.R., Jacoby, G.C. and Wiles, G.C., 2001, Decadal-scale climatic variability along the extratropical western coast of the Americas: evidence from tree-ring records: In: V. Markgraf (ed.) Interhemispheric Climate Linkages. Academic Press, p. 155-172.

Howe, G.T, and Wiles, G.C., 2001, The story in the rings: Ohio Woodland Journal, v.8, p. 16-18.

RESEARCH GRANTS
NSF  - ATM-0902799 Collaborative Research: Reconstructing North Pacific Climate Variability using a Multi-Millennial Tree-Ring Resource for Glacier Bay, Alaska (with D. Lawson and R. D’Arrigo) 10/16/2008 - 10/15/2011, $93,917 (Wooster portion).  

Center for Creativity and Innovation (The College of Wooster) – Tree-Ring Dating of Historical Structures in Ohio and PA, Summer 2009, $14,000.

Keck Geology Consortium - The Geomorphology and Dating of Holocene high-water levels on the Kenai Peninsula, Alaska (summer 2009) with Alaska Fish and Wildlife Service and the Alaska State Geological Survey, $16,900.

Alaska Fish and Wildlife Service: The Geomorphology and Dating of Holocene high-water levels on the Kenai Peninsula, Alaska (summer 2009) – matching funds requested for support of lake studies in the Kenai Wildlife Refuge,  $10,000.

Center for Creativity and Innovation (The College of Wooster) – Tree-Ring Dating of Historical Structures in Ohio, Summer 2008, $9,500.

National Geographic Research Grant - Development and analysis of millennia-long tree-ring records from Glacier Bay National Park and Preserve, Alaska (GRANT #8246-07), $19,500.

Keck Geology Consortium Grant – Paleoclimate of Glacier Bay National Park and Preserve, support for three students for tree-ring and glacier research in Glacier Bay National Park, Alaska, $16,900.

Luce Fund for Distinguished Scholarship (The College of Wooster) – Updating Tree Ring Records and Glacial Histories at Wolverine and Exit Glaciers – Southcentral Alaska, 11/23/08-11/23//09, $5,890.

NSF – ATM-0202898 - coPI, Development and Analysis of Climatically-Sensitive Tree-Ring Chronologies from Data Sparse Sites along the North Pacific Rim (with R.D. D'Arrigo and Brendan Buckley, Columbia University), 7/1/02-6/31/06), $339,566.

Luce Fund for Distinguished Scholarship (The College of Wooster) – Development and analysis of millennia-long tree-ring records from Glacier Bay National Park and Preserve, Alaska, summer 2006, $4,700.

Hewlett-Mellon (The College of Wooster)– Grant for Geophysical and Geospatial Data Collection for Class Use and Student and Faculty Research (with P.Kardulias, Archaeology and R. Varga, Geology), $33,700.

National Geographic Research Grant - A Thousand Year Glacial and Temperature History from College Fiord, Southern Alaska, with Lucio Cunha (University of Coimbra, Portugal) and Joao Santos (Oklahoma State University). Collaborative project funded by the Global Exploration Fund, NGS, 2004-05, $10,000.

The Henry Luce Foundation (The College of Wooster) – Participant, Funds to initiate The Environmental Analysis and Action Program at The College of Wooster, an interdisciplinary program built around student faculty research and policy implications of this work, 1/1/05-12/31/07, $270,000.

Luce Fund for Distinguished Scholarship – Climate Change and Geomorphic History of Northeast Ohio, funds for the study of alluviation and its relation to recent climate change, 11/18/03-8/31/05, $4,680.

Keck Geology Consortium Grant - The Glacial/Interglacial Transition: The Record from Ohio’s Lakes and Bogs: with Donald Pair (University of Dayton) and Thomas V. Lowell (University of Cincinnati), Summer 2002. Support for nine students to travel to Alberta, Canada to study modern glacial environments and to core bogs and lakes in southwestern Ohio, summer 2002. ($65,000).

NSF - ATM99-10805 PI, Tree-Ring Based Records of Temperature and Glacial Fluctuation Spanning the Past Two Millennia, Prince William Sound, Alaska (collaborative project with P.E. Calkin, University of Colorado), The College of Wooster Participation 5/1/00-4/31/02. This contract supported 7 College of Wooster students for travel to field sites in Alaska and lab work at Wooster. $268,570 total, $40,621 Wooster portion.

NOAA- NA86GP0435 coPI, Development and Analysis of Climatically-Sensitive Tree-Ring Chronologies from Data Sparse Sites along the North Pacific Rim (with G.C. Jacoby and R.D. D'Arrigo) 7/1/98 - 6/30/01. $327,614.

NSF - ATM97-09095 coPI, Long-Term High Resolution Paleoclimate in the Wrangell Mountain Range, Alaska (co-PI with G.C. Jacoby), 5/1/97-4/31/01; REU supplement for Ryan McAllister (The College of Wooster). $364,950.

Keck Geology Consortium Grant, Surficial Geologic Mapping and Late Wisconsin Glacial Stratigraphy of Southwest Ohio, with Donald Pair (University of Dayton) and Thomas V. Lowell (University of Cincinnati), Summer 2001. Support for eight students to travel to British Columbia, Canada to study modern glacial environments and to investigate the glacial stratigraphy of southwestern Ohio. $55,000.

Soil Science Society of America, U.S. Geological Survey, National Resource Conservation Service and Keck Consortium, Outreach to the Geoscience Community: A soils workshop aimed at geology faculty from undergraduate, non-land grant institutions (with Edward R. Landa, U.S. Geological Survey and Mary Savina, Carleton College), Fall 2001. $18,000 total.

Hewlett-Mellon Grant for the Initiation of a Computer Laboratory for Geographic Information Systems, January 2000 (with Lyn Loveless, Biology), The College of Wooster. Contract provided support for hardware, software and student support. $40,000.

College of Wooster Faculty Development Grants - Continued Investigation of Landscape Development in Northern Ohio, Spring 2000, 2001, 2004, 2005. (total $2700).

NSF - NA56GP0235, coPI, Development and Analysis of Climatically-Sensitive Tree-Ring Chronologies from the North Pacific Rim (with R.D. D'Arrigo and G.C. Jacoby) 4/1/95 - 3/31/97. $298,747.

NSF - OPP 93-18872, coPI, Reconstruction of Climatic History and High Resolution Dating of Glacier Fluctuations Using Tree-Ring Analysis at Icy and Yakutat Bays, Alaska (co-PI with P.E. Calkin) 5/1/94 - 4/31/97. $282,113.

NSF - OPP 93-21213, Researcher, West Antarctic Ice Sheet Stability: The Late Quaternary Record from Nunataks and Coastal Mountains (with H.W. Borns and P.E. Calkin) 6/01/94 - 9/01/95. $43,771.