Eugene Wahl - CV

RESEARCH FOCUS :

Last-2000 year annual-to-sub-annual climate reconstructions for North America and the Northern Hemisphere. In this area I work on climate field reconstructions, developing reconstruction methods, and experimental examinations of how well the methods are working. A key current target is the use of N. American field reconstructions over the past 600 years to determine spatially-characteristic responses of the climate system to external forcing, and then exploiting these characteristic responses to: (a) identify climate model capacity to accurately simulate the regional forcing-response characteristics and (b) diagnose reasons why the models succeed or fail to accurately capture the regional signals. Finally, regionally best-performing models can then be identified for use in climate change impacts analyses, such as future drought and fire regimes in the N. American West.

Assimilation of multi-decadal to centennial pollen-derived climate information with annually-responding tree ring information and centennial to multi-centennial climate reconstructions from boreholes. In this area I am part of a project to develop Bayesian Hierarchical Modeling as a method for integration of different-frequency climate proxy information. This project has the target of last two-millennial reconstructions of average N. American surface temperatures.

Full-Holocene climate reconstructions in N. America using pollen proxy information. In this area I work on both reconstructions and developing and optimizing reconstruction methods, especially the Modern Analog Technique. A recent emphasis in this area is the development of drought variability reconstructions for mid-latitude central North America over the period 9,000-3,000 years ago.

Experimental examination of the comparative value of single-site, multiple-site, and climate field reconstructions of ENSO variability.

EDUCATION :

EMPLOYMENT (abbreviated) :

HONORS and AWARDS :

• Japan Society for the Promotion of Science, post-doctoral fellowship, 2001 (not enacted due to relocation of supervising scientist to United States).
• U.S. Department of Energy, Global Change Education Program, Honorable Mention, graduate fellowship competition, 1999;
• American Association of Stratigraphic Palynologists, Best Student Presentation at annual meeting, 1998;
• Geological Society of America, Outstanding Student Research Proposal, 1998;
• Research Training Group, "Paleorecords of Global Change", University of Minnesota, traineeships (50% research assistant stipend & tuition fellowship), 1996-1997, 1997-1998;
• Conservation Biology, University of Minnesota, tuition fellowships, 1995;
• Church Divinity School of the Pacific, Mercer Memorial Scholarship Fund, Society for the Increase of the Ministry, tuition scholarships, 1985,1986, 1987;
• Center for Public Economics, San Diego State University, tuition scholarships, 1977, 1981, 1982;
• Summa Cum Laude, B.A., 1977; Distinction in Economics, 1977; Phi Beta Kappa, 1977;

PROFESSIONAL MEMBERSHIPS :

• American Association for the Advancement of Science
• American Geophysical Union
• The Ecological Society of America

PUBLICATIONS :

Publications Related to Paleoclimatology, Paleoecology, and Biogeography (papers)

• Cole, Kenneth and Wahl, Eugene, 2000, "A Late Holocene Paleoecological Record from Torrey Pines State Reserve, California", Quaternary Research, 53, 341-351.
• Gavin, Dan, Oswald, W. Wyatt, Wahl, Eugene, and Williams, John, 2003, "A Statistical Approach for Evaluating Distance Metrics and Analog Assignments for Pollen Records", Quaternary Research, 60:3, 356-367.
• Wahl, Eugene, 2003, "Pollen Surface Samples for Paleoenvironmental Reconstruction from the Coast and Transverse Ranges of Southern California", Madroño, 50:4, 286-299.
• Wahl, Eugene, 2003, "Assigning Climate Values to Pollen Surface Sample Sites and Validating Modern Analog Climate Reconstructions in the Southern California Region", Madroño, 50:4, 271-285.
• Wahl, Eugene, 2004, "A General Framework for Determining Cutoff Values to Select Pollen Analogs with Dissimilarity Metrics in the Modern Analog Technique", Review of Palaeobotany and Palynology, 128, 263-280.
• Lytle, David and Wahl, Eugene, 2005, "Palaeoenvironmental Reconstructions Using the Modern Analog Technique: The Effects of Sample Size and Decision Rules", The Holocene, 15:4, 554-566.
• Mann, Michael.E., Rutherford, Scott, Wahl, Eugene, and Ammann, Caspar, 2005, "Testing the Fidelity of Methods Used in Proxy-Based Reconstructions of Past Climate", Journal of Climate Letters, 18, 4097-4107.
• Wahl, Eugene, Ritson, David, and Ammann, Caspar, 2006, "Comment on 'Reconstructing Past Climate from Noisy Data'", Science, 312, 529b.
• Mann, Michael.E., Rutherford, Scott, Wahl, Eugene, and Ammann, Caspar, 2007, "Robustness of Proxy-Based Climate Field Reconstruction Methods", Journal of Geophysical Research, v. 112, D12109, doi:10.1029/2006JD008272.
• Mann, Michael.E., Rutherford, Scott., Wahl, Eugene, and Ammann, Caspar, 2007, "Reply to 'Comment on 'Testing the Fidelity of Methods Used in Proxy-Based Reconstructions of Past Climate' by Mann et al., J.Clim 18, 4097'", Journal of Climate Letters, 20:14, 3699-3703. (Comment by Zorita et al.)
• Wahl, Eugene and Ammann, Caspar, 2007, "Robustness of the Mann, Bradley, Hughes Reconstruction of Northern Hemisphere Surface Temperatures: Examination of Criticisms Based on the Nature and Processing of Proxy Climate Evidence", Climatic Change, 85:33-69, DOI 10.1007/s10584-006-9105-7.
• Ammann, Caspar and Wahl, Eugene, 2007, "The Importance of the Geophysical Context in Statistical Evaluations of Climate Reconstruction Procedures", Climatic Change, 85:71-88, DOI 10.1007/s10584-007-9276-x.
• Mann, Michael.E., Rutherford, Scott, Wahl, Eugene, and Ammann, Caspar, 2007, "Reply to 'Comment on 'Testing the Fidelity of Methods Used in Proxy-Based Reconstructions of Past Climate' by Mann et al., J.Clim 18, 4097'", Journal of Climate Letters, 20:22, 5671-5674, DOI: 10.1175/2007JCLI1894.1. (Comment by Smerdon and Kaplan)
• Mann, Michael.E., Rutherford, Scott, Wahl, Eugene, and Ammann, Caspar, 2008, .Reply to comment by Jason E. Smerdon et al. on .Robustness of proxy-based climate field reconstruction methods, Journal of Geophysical Research, 113, (in press) XXXXXX, doi:10.1029/2008JD009964.
• Jones, Phil, Briffa, Keith, Osborn, Tim, Lough, Janice, van Ommen, T.D., Vinther, B.M., Luterbacher, Juerg, Wahl, Eugene, Zwiers, Francis, Mann, Michael, Schmidt, Gavin, Ammann, Caspar, Buckley, B.M., Cobb, Kim, Esper, Jan, Goosse, Hugues, Graham, Nicholas, Jansen, Eistein, Kiefer, Thorsten, Kull, Christophe, Küttel, Marcel, Mosley-Thompson, Elizabeth, Overpeck, Jonathan, Riedwyl, Nadja, Schulz, M., Tudhope, A.W., Villalba, Ricardo, Wanner, Heinz, Wolff, E., and Xoplaki, Elena, (accepted September 2008) The Holocene, "High-Resolution Paleoclimatology of the Last Millennium: A Review of Current Status and Future Prospects".
• Ammann, Caspar and Wahl, Eugene, in preparation, "Propagation of Forcing Signal Through the Reconstruction Filter".
• Wahl, Eugene and Ammann, Caspar, in preparation, "Stationarity of Simulated El Niño-Southern Oscillation Climate Proxies over the Last Millenium in Forced Transient AOGCM Output".
• Wahl, Eugene, in preparation, "Holocene Paleoenvironmental Reconstruction in the Southern California Peninsular and Transverse Ranges".

Publications Related to Paleoclimatology, Paleoecology, and Biogeography (abstracts and unpublished technical reports)

• Cole, Kenneth and Wahl, Eugene, 1996, "Mid- to Late-Holocene Stability in Both Natural Populations of Torrey Pine", Abstracts of the American Quaternary Association Biennial Meeting.
• Cole, Kenneth and Wahl, Eugene, 1997, The Late Holocene Vegetation and Fire History of Torrey Pines State Reserve, (technical report to Torrey Pines State Reserve, State of California, 47 pp).
• Wahl, Eugene, 1999, "Holocene Paleoecology of Southern California: Including a New Technique for Analyzing Cutoff Values in the Square Chord Distance Modern Analog Method", Abstracts of the Ecological Society of America 84th Annual Meeting, 208.
• Wahl, Eugene, 2000, "Holocene Paleoecology of Southern California: Methods, Results, and Testing of Climate Model Simulations", Abstracts of the Ecological Society of America 85th Annual Meeting, 225.
• Wahl, Eugene, 2000, "Holocene Paleoecology of Southern California: Methods, Results, and Relation to Climate Models", Geological Society of America Abstracts with Programs, 2000, 32:7, A-403.
• Wahl, Eugene and Lytle, David, 2001, "The Effect of Sample Size on Paleoenvironmental Reconstructions Using the Modern Analog Technique", Abstracts of the Ecological Society of America 86th Annual Meeting, 228.
• Lytle, David and Wahl, Eugene, 2003, "The Effect of Sample Size and Decision Rules on Paleoenvironmental Reconstructions Using the Modern Analog Technique", Abstracts of the XVI International Union for Quaternary Research Congress.
• Wahl, Eugene and Ammann, Caspar, 2003, "Using AOGCM Output to Assess the Performance of Teleconnection Patterns Derived from Climate Proxies", Abstracts of the Ecological Society of America 88th Annual Meeting, 346.
• Wahl, Eugene, Graham, Nicholas, Ammann, Caspar, and Mearns, Linda, 2003, "Using AOGCM Output to Assess the Fidelity of Proxy-Derived Teleconnection Patterns", Proceedings of the International Conference on Earth System Modelling, Hamburg, Germany, 2003.
• Ammann, Caspar, Wahl, Eugene, and Tomas, Robert, 2003, "Large Scale Drought Events: Internal Variability and External Modulators", Proceedings of "A Multi-millennia Perspective on Drought and Implications for the Future: CLIVAR/ PAGES/IPCC Workshop", Tucson, Arizona, 2003.
• Wahl, Eugene and Ammann, Caspar, 2003, "Examination of Long-Term Proxy Stationarity Using AOGCM Output: AD 1000-1999., Proceedings of the American Geophysical Union Annual Meeting, San Francisco, California, 2003.
• Wahl, Eugene and Ammann, Caspar, 2004, "Stationarity of Proxy-based El Niñoo-Southern Oscillation SST Reconstructions in Forced Transient Climate Model Output", Proceedings of "Tree Rings and Climate: Sharpening the Focus", Tucson, AZ, 2004.
• Wahl, Eugene and Ammann, Caspar, 2005, "Robustness of Spatial Climate Reconstructions--Real World and Virtual (climate model) World", Proceedings of American Association of Geographers Annual Meeting, Denver, CO, April, 2005.
• Wahl, Eugene, 2006, "Stability of Empirical-Analytical (Empirical Orthogonal Function--EOF) Modes", Proceedings of American Association of Geographers Annual Meeting, Chicago, Illinois, March, 2006.
• Ammann, Caspar, Wahl, Eugene, and Obbink, E A, 2006, "Reconstructing Climates of the Last Millennium: Next Steps", Eos Transactions, AGU, 87(52), Fall Meeting 2006, Supplemental Abstracts.
• Rutherford, Scott, Mann, Michael E., Wahl, Eugene, and Ammann, Caspar, 2006, "Test of Climate Field Reconstruction Performance Using Pseudoproxies", Eos Transactions, AGU, 87(52), Fall Meeting 2006, Supplemental Abstracts.
• Wahl, Eugene and Ammann, Caspar, 2007, "Reconstruction Fidelity in Truncated EOF and RegEM Climate Field Reconstruction Methods", Proceedings of the International Meeting on Statistical Climatology, Beijing, China, August, 2007.
• Wahl, Eugene, 2008, "Volcanic Forcing Fingerprint in Western North America", Proceedings of American Association of Geographers Annual Meeting, Boston, Massachusetts, April, 2008.

Publications Related to Environmental Ethics, Environmental Economics, and Environmental Theology

• Wahl, Eugene and Rock, Judith, 1993, "The Religious Value of Biodiversity", Ecojustice Quarterly, 13:3, 11, National Council of Churches, Ithaca, NY.
• Wahl, Eugene, 1994, "Frontier Economy", Environmental Encyclopedia (1st ed.), Cunningham, W., Ball, T., Cooper, T., Gorham, E., Hepworth, M., Marcus, A., eds., Gale Research Inc., Detroit, MI, 356-357.
• Wahl, Eugene, 1994, "Steady State Economy", Environmental Encyclopedia (1st ed.), Cunningham, W., Ball, T., Cooper, T., Gorham, E., Hepworth, M., Marcus, A., eds., Gale Research Inc., Detroit, MI, 793-794.
• Wahl, Eugene and Shrdlu, E., 1994, "Sustainable Development", Environmental Encyclopedia (1st Ed.), Cunningham, W., Ball, T., Cooper, T., Gorham, E., Hepworth, M., Marcus, A., eds., Gale Research Inc., Detroit, MI, 810-812.
• Wahl, Eugene, 2002, "On the Implications of Ecology for Incarnation: Triangle Theology", in Sustaining Creation, Anglican Province of W. Australia, Australian Catholic Bishops Conference, Uniting Church in Australia, Perth, Australia.
• Wahl, Eugene, 2003, "The Authority of Science in Theological Reasoning: with Case Study., Geological Society if America Abstracts with Programs, 2003, 35:6.
• Morss, Rebecca and Wahl, Eugene, 2007, An Ethical Analysis of Prediction and Decision Making in the Red River Flood of 1997, Environmental Hazards 7:342-352.

Publications Related to Public Economics

• Wahl, Eugene, 1982, A Retrospective Look at the Success of Long-Range Revenue Forecasting, Financial Management Department, City of San Diego, CA (M.A. thesis).

PRESENTATIONS :

Presentations at Professional Meetings and Invited Presentations

• 1985, "Forecasting Property Taxes after Proposition 13", Conference on Alternative Revenue Sources for State and Local Government, Center for Public Economics, San Diego State University, February, 1985.
• 1998, "Later Holocene Paleoecology of Los Peñasquitos Lagoon, California", with Kenneth Cole, American Association of Stratigraphic Palynologists, October 1998 (recipient of Best Student Presentation award).
• 1999, "Holocene Paleoecology of Southern California: Including a New Technique for Analyzing Cutoff Values in the Square Chord Distance Modern Analog Method", Ecological Society of America, August, 1999.
• 2000, "Holocene Paleoecology of Southern California: Methods, Results, and Testing of Climate Model Simulations", Ecological Society of America, August, 2000.
• 2000, "Holocene Paleoecology of Southern California: Methods, Results, and Relation to Climate Models", Geological Society of America, November, 2000.
• 2001, "A GIS-based Model for Predicting Future Plant Ranges in the Southwest Under Global Warming Scenarios", Pinyon Ecology Working Group, Northern Arizona University, January, 2001.
• 2001, "The Effect of Sample Size on Paleoenvironmental Reconstructions Using the Modern Analog Technique", Ecological Society of America, August, 2001.
• 2002, "Pollen-Based Paleoclimate and Paleovegetation Reconstruction Calibration: Optimal Cutoff Thresholds for Selecting Modern Analogs for Fossil Pollen Assemblages; and Monte Carlo Simulations for Examining the Interactions Between Count Size, Analog Thresholds, and Reconstruction Rules Used in the Modern Analog Technique", Environmental and Societal Impacts Group, National Center for Atmospheric Research, June, 2002.
• 2003, (1) "Pollen-based Paleoclimate and Paleovegetation Reconstruction Calibration: Optimal Cutoff Thresholds for Selecting Modern Analogs for Fossil Pollen Assemblages; and Monte Carlo Simulations for Examining the Interactions Between Count Size, Analog Thresholds, and Reconstruction Rules Used in the Modern Analog Technique" and (2) "Recent Work on the Accuracy of Paleo Teleconnection Patterns of Major Climate Modes in Fully-Coupled NCAR AOGCM's", Institute for Arctic and Alpine Research, University of Colorado, Boulder, February, 2003.
• 2003, "Using AOGCM Output to Assess the Performance of Teleconnection Patterns Derived from Climate Proxies", Ecological Society of America, August, 2003.
• 2003, "Using AOGCM Output to Assess the Fidelity of Proxy-Derived Teleconnection Patterns", International Conference on Earth System Modelling, Hamburg, Germany, September, 2003.
• 2003, "Examination of Long-Term Proxy Stationarity Using AOGCM Output: AD 1000-1999", American Geophysical Union, December, 2003.
• 2004, "Stationarity of Proxy-based El Niño-Southern Oscillation SST Reconstructions in Forced Transient Climate Model Output", Meeting on Tree Rings and Climate: Sharpening the Focus, Tucson, Arizona, April, 2004.
• 2004, "Global Temperatures Over the Last Two Millennia, Recent Controversy, and Modern Human-Caused Climate Change", Environmental Studies Seminar Series, Alfred University, Alfred, New York, November, 2004.
• 2005, "Global Temperatures Over the Last Two Millennia, Recent Controversy, and Modern Human-Caused Climate Change", Chemistry Seminar Series, Alfred University, Alfred, New York, February, 2005.
• 2005, "Robustness of Spatial Climate Reconstructions--Real World and Virtual (climate model) World", American Association of Geographers, April, 2005.
• 2005, "Last Millennium Climate Reconstructions: Issues and Examinations", House of Representatives Science Committee, Rayburn Congressional Office Building, Washing-ton, DC, sponsored by the Pew Center on Global Climate Change, November, 2005.
• 2006, "Stability of Empirical-Analytical (Empirical Orthogonal Function--EOF) Modes", American Association of Geographers, March, 2006.
• 2006, "Global Warming: One Scientist's Journey amid the Technical and the Political", Bergren Forum, Alfred University, Alfred, New York, April, 2006.
• 2006, "Examining: (1) Proxy-Based Criticism of the MBH Reconstruction, and (2) Potential for False Positive Reconstruction Validations Driven by Low-Frequency Variations in Teleconnection Strength", invited presentation at PAGES/CLIVAR special conference on "Past Millennia Climate Variability: Proxy based reconstructions, Modeling and Methodology - Synthesis and Outlook", Wengen, Switzerland, June, 2006.
• 2006, "Climate Change: Scientific Perspective, Possible Impacts, and Forging Sustainable Mindsets and Action", Alfred State College 2006 Sustainability Forum, Alfred, New York, October, 2006.
• 2007, "Perspectives in Optimizing High Temporal Resolution Climate Field Reconstructions", University of Bern/NCCR-Climate, Bern, Switzerland, January, 2007.
• 2007, "Climate Change: Scientific Perspective, Possible Impacts, and Forging Sustainable Mindsets and Action", New York State Southern Tier Board of Cooperative Education Services (BOCES), Hornell, New York, April, 2007.
• 2007, "An Ethical Analysis of Hydrometeorological Prediction and Decision Making", National Center for Atmospheric Research, Institute for the Study of Society and Environment, August, 2007.
• 2007, "Reconstruction Fidelity in Truncated EOF and RegEM Climate Field Reconstruction Methods", International Meeting on Statistical Climatology, Beijing, China, August, 2007.
• 2007, "Ethical Analysis of Hydrometeorological Prediction and Decision Making", Environmental Studies Seminar Series, Alfred University, Alfred, New York, November, 2007.
• 2008, "Climate Change: Science, Impacts, and Hope for the Future", College of Engineering, Alfred University, Alfred, New York, February, 2008.
• 2008, "Climate Change: Science, Impacts, and Hope for the Future", New York State Southern Tier Board of Cooperative Education Services (BOCES), Hornell, New York, April, 2008.
• 2008, "Volcanic Forcing Fingerprint in Western North America", American Association of Geographers, April, 2008.
• 2008, "Reconstructing Climate with Pollen Data: Modern Analog versus Pollen Ratio Reconstructions and a Statistical Model for Pollen Ratios", National Center for Atmospheric Research, Boulder, Colorado, August, 2008.
• 2008, "Reconstructing Climate of the Past 2000 Years", National Climate Data Center (NOAA), Asheville, North Carolina, October, 2008.

Leadership of Special Courses, Programs, Workshops, and Seminars (non-academic and academic)

• 1989, Advent course on theological, ethical, and liturgical dimensions of creation spirituality; St. John's Episcopal Church, Ross, CA.
• 1991, 3-day workshop on practical and personal dimensions of creation spirituality; with the Rev. Juan Cabrero-Oliver and the Rev. Shari Young, The Bishop's Ranch, Healdsburg, CA.
• 1992, Course on environmental theology; Trinity Episcopal Church, Anoka, MN. . 1998, 7-day program linking environmental concerns with environmental ethics and creation spirituality; with the Rev. Barbara Dumke, Iona Abbey, Iona, Scotland, U.K.
• 1999, 3-day workshop linking environmental concerns with environmental ethics and creation spirituality; with the Environmental Stewardship Commission of the Episcopal Diocese of Minnesota, Christ the King Retreat Center, Buffalo, MN.
• 2000, "The Modern Analog Technique and Square Chord Distance Measures in Paleoecology--What.s New"; coordinator of technical session at the Ecological Society of America Annual Meeting, Snowbird Conference Center, UT.
• 2002, 1-day workshop on practical and personal dimensions of creation spirituality for persons in recovery; with the Rev. Barbara Dumke, Pemarro Center, Ramona, CA.
• 2003, Clergy and Lay Institute conference--.The Good Earth.; planner, moderator, and workshop leader concerning resources of faith communities for environmental stewardship, United Church of Christ-First Congregational Church, Longmont, Colorado.

Community Service :

• Episcopal Diocese of San Diego, Peace Task Force, member, 1983-1985;
• Church Divinity School of the Pacific, Socially Responsible Investments Task Force, student member, 1987-1988;
• Episcopal Diocese of California (San Francisco region), Peace Commission, member, 1990-1992;
• Episcopal Diocese of Minnesota, Environmental Stewardship Commission, founding chair and member, 1993-2000;
• University of Minnesota Conservation Biology Program, Curriculum Committee, student member, 1996-1997;
• University of Minnesota, Search Committee, Fesler-Lampert Chair in Ecological Economics, student member, 1995-1996, 1998;
• University of Minnesota, Department of Ecology, Evolution, and Behavior, student representative to graduate faculty, 1997-1998.

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