• BS, Environmental Engineering, New Mexico Institute of Mining and Technology, 1975
• MS, Groundwater Hydrology, New Mexico Institute of Mining and Technology,, 1977
• Ph D, Hydrology, New Mexico Institute of Mining and Technology,, 1982

Journal Articles

Justin Schute, Raymond Najjar and Christopher J Duffy, 2015, "Geometric and topological approaches to significance testing in wavelet analysis", Nonlinear Geophysics, 22

Xuan Yu, Christopher J Du andfy, , 2015, "Cyber-Innovated Watershed Research at the Shale Hills Critical Zone Observatory.", IEEE Systems Journal, PP, (99), pp. 12

Lorne Leonard and Christopher J Duffy, 2015, "Automating Data-Model Workflows at a Level 12 HUC Scale: Watershed Modeling in a Distributed Computing Environment", International Environmental Modelling & Software, 61, pp. 174-190

Mukesh Kumar and Christopher J Duffy, 2015, "Exploring the role of domain partitioning on efficiency of parallel distributed hydrologic model simulations", Journal of Hydrogeology and Hydrologic Engineering, 4, (1), pp. 1-12

Christopher J Duffy, 2014, "Designing a Suite of Models to Explore Critical Zone Function", Earth and Planetary Science, 10, pp. 7-15

Yuning Shi, Kenneth J. Davis, Fuqing Zhang and Christopher J Duffy, 2014, "Evaluation of the Parameter Sensitivities of a Coupled Land Surface Hydrologic Model at a Critical Zone Observatory", Journal of Hydrometeorology, 15, (1), pp. 279-299

K French and Christopher J Duffy, 2014, "Understanding Ancient Maya Water Resources and the Implications for a More Sustainable Future", Wiley Interdisciplinary Reviews (WIREs): Water, Focus Article special issue, pp. 14

Gopal Bhatt, Mukesh Kumar and Christopher J Duffy, 2014, "A Tightly Coupled GIS and Distributed Hydrologic Modeling Framework", Environmental Modeling and Software, 60, pp. 22

B. Bolukbasi and Christopher J Duffy, 2013, "Open Data: Crediting a Culture of Cooperation", Science Letters, 342, (29), pp. 1041-1042

S. A. Banwart, J. Chorover, J. Gaillardet, D. Sparks, T. White, S. Anderson, A. Aufdenkampe, S. Bernasconi, S. L. Brantley, O. Chadwick, W. E. Dietrich, Christopher J Duffy, M. Goldhaber, K. Lehnert, N. P. Nikolaidis and K. V. Ragnarsdottir, 2013, "Sustaining Earth's Critical Zone Basic Science and Interdisciplinary Solutions for Global Challenges"

Y. Shi, K. Davis, Christopher J Duffy and X. Yu, 2013, "Development of a Coupled Land Surface Hydrologic Model and Evaluation at a Critical Zone Observatory", JOURNAL OF HYDROMETEOROLOGY, pp. 1401-1420

X. Yu, G. Bhatt, Christopher J Duffy and Y. Shi, 2013, "Parameterization for distributed watershed modeling using national data and evolutionary algorithm", Computers in Geoscience, 58, pp. 80-90

L. Leonard and Christopher J Duffy, 2013, "Essential Terrestrial Variable data workflows for distributed water resources modeling", Environmental Modelling & Software, 50, pp. 85-96

K. French, Christopher J Duffy and G. Bhatt, 2013, "The urban hydrology and hydraulic engineering at the classic maya site of Palenque", Journal of Water Hististory, pp. 29

Christopher J Duffy, Yolanda Gil, Ewa Deelman, Suresh Marru, Marlon Pierce, Ibrahim Demir and Gerry Wiener, 2012, "Designing a roadmap for geoscience workflows", EOS, TRANSACTIONS AMERICAN GEOPHYSICAL UNION, 93, (24), pp. 225-226

Shuangcai Li and Christopher J Duffy, 2012, "Fully-Coupled Modeling of Shallow Water Flow and Pollutant Transport on Unstructured Grids", Procedia Environmental Sciences, 13, pp. 2098-2121

S. A. Banwart, S. Bernasconi, J. Bloem, W. Blum, D. M. de Souza, F. Chabaux, Christopher J Duffy, L. Lundin, P. Kram, N. Nikolaidis, M. Novak, P. Panagos, K. V. Ragnarsdottir, B. Reynolds, D. Robinson, S. Rousseva, P. de Ruiter, P. van Gaans, L. Weng, T. White and B. Zhang, 2012, "Soil Processes and functions across an International Network of Critical Zone Observatories: introduction to experimental methods and initial results", Comptes Rendu Geosciences, 344, pp. 758-772

K. French, Christopher J Duffy and G. Bhatt, 2012, "THE HYDROARCHAEOLOGICAL METHOD:A CASE STUDY AT THE MAYA SITE OF PALENQUE", Latin American Antiquity, 23, (1), pp. 29-50

Lixin Jin, Gernot Rother, David R. Cole, David F. R. Mildner, Christopher J Duffy and Susan L. Brantley, 2011, "Characterization of deep weathering and nanoporosity development in shale - a 3 neutron study", American Mineralogist, 96, pp. 498-512

S. Li and Christopher J Duffy, 2011, "Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers", Water Resour. Res., 47

P. C. Beeson, D. A. Miller and Christopher J Duffy, 2011, "Identifying ephemeral and perennial stream reaches using apparent thermal inertia of an ungauged basin in Central New Mexico", Geocarto International, 26, (3)

Christopher J Duffy, 2010, "A Concentration-Age-Discharge Dynamical System for Watersheds", Hydrologic Processes, 24, (12), pp. 1711-1718

Christopher J Duffy, 2010, "Journal of Commerce", Hydrological Lessons from the Mayans

Christopher J Duffy, 2010, "An object-oriented shared data model for GIS and distributed hydrologic models", International journal of geographical information science, 24, (7), pp. 1061-1079

K. D. French and Christopher J Duffy, 2010, "Prehispanic Water Pressure: A New World First", Journal of Archaeological Science, 37, (5), pp. 1027-1032

M. C. Kumar and Christopher J Duffy, 2009, "Object Oriented Shared Data Model for GIS and Distributed Hydrologic Models", International Journal of Geographical Information Science

M. Kumar and Christopher J Duffy, 2009, "Detecting Hydroclimatic Change Using Spatio-Temporal Analysis of Time Series in Colorado River Basin", Journal of Hydrology, 374, pp. 1-15

M. Kumar, G. Bhatt and Christopher J Duffy, 2009, "An efficient domain decomposition framework for accurate representation of geodata in distributed hydrologic models", International Journal of Geographical Information Science, 23, (12), pp. 1569-1596

M. Kumar, Christopher J Duffy and K. Salvage, 2009, "A Second-Order Accurate, Finite Volume-Based, Integrated Hydrologic Modeling (FIHM) Framework for Simulation of Surface and Subsurface Flow", Vadose Zone J., 8, (4), pp. 873-890

S. A. Anderson, R. C. Bales and Christopher J Duffy, 2008, "Critical Zone Observatories: Building a network to advance interdisciplinary study of Earth surface processes", Mineralogical Magazine, 72, (1), pp. 7-10

Conference Proceedings

A. Lamacová, X. Yu, Christopher J Duffy, P. Krám, Jakub Hruska and Ale Farda, 2013, "PROJECTIONS OF FUTURE WATER-ENERGY-VEGETATION REGIMES AT THE LYSINA CATCHMENT", Proceedings of the 3rd annual Global Change and Resilience Conference, GLOBAL CHANGE RESEARCH CENTRE

Christopher J Duffy, Lorne Leonard, Gopal Bhatt, Xuan Yu and Lee Giles, 2011, "Watershed Reanalysis Towards a National Strategy for Model-Data Integration", IEEE Computer Society, pp. 61-65

G. Bhatt, M. Kumar and Christopher J Duffy, 2008, "Bridging the Gap between Geohydrologic Data and Distributed Hydrologic Modeling", iEMSs 2008: International Congress on Environmental Modelling and Software Integrating Sciences and Information Technology for Environmental Assessment and Decision Making

M. Kumar and Christopher J Duffy, 2008, "Shared Data Model to Support Environment Sensor Network Data in Hydrologic Models", iEMSs 2008: International Congress on Environmental Modelling and Software Integrating Sciences and Information Technology for Environmental Assessment and Decision Making

Christopher J Duffy, 2005, "Integrated River Basin Modeling: Towards a Multi-Scale, Multi-Process Strategy for the Chesapeake Bay Watershed", 17th Biennial Conference of the Estuarine Research Federation

Christopher J Duffy, 2005, "The groundwater connection: amplification of seasonal to century scale oscillations in closed basins", Geological Society of America Annual Meeting, Geological Society of America, 37, (7), pp. p. 162

M. Kumar, Christopher J Duffy and P. Reed, 2004, "Enhancing the Performance of Feature Selection Algorithms for Classifying Hyperspectral Imagery", IEEE Proceedings Remote Sensing, Geoscience and Remote Sensing Symposium, IGARSS '04, 5, pp. 3264-3267

Manuscripts

Yuning Shi, Kenneth J Davis, Fuqing Zhang, Xuan Yu and Christopher Duffy, 2014, "Parameter Estimation of a Physically-Based Land Surface Hydrologic Model Using an Ensemble Kalman Filter: A Multi-Sensor Real-Data Experiment", 50, pp. 706-724

Xuan Yu, Anna Lamacová, Christopher Duffy, Pavel Krám, Tim White and Jakub Hruska, 2014, "Modeling long term water yield effects of forest management in a Norway spruce forest", pp. 12

Xuan Yu, Christopher J Duffy, D C Baldwin and H Lin, 2014, "The role of macropores and multi-resolution soil survey datasets for distributed surface-subsurface flow modeling", pp. 8

Manoj Menon, Svetla Roussevab, Nikolaos P. Nikolaidis, Pauline Van Gaans, Panos Panagos, Danielle Maia de Souza, Krisin Vala Ragnarsdottir, Georg J. Lair, Liping Weng, Jaap Bloem, Pavel Kram, Martin Novak, Brynildu Davidsdottir, Gudrun isladottir, David Robinson, Brian Reynolds, Tim White, Lars Lundin, Bin Zhang, Christopher J Duffy, Stefano M. Bernasconi, Peter de Ruiter, Winfried E. H. Blum and Steven Banwart, , "SoilTrEC: A Global Initiative on Critical Zone Research and Integration"

Other

Christopher J Duffy, 2011, "", Associated Press, On Ancient Susquehanna, Flooding's a Frequent Fact

Christopher J Duffy, 2010, "The Times of India", Clock reset: Mayans knew about water pressure

Christopher J Duffy, 2010, "Zee News", Mayan plumbing

Christopher J Duffy, 2010, "Discovery News", Mayan Plumbing More Than A Pipe Dream

Christopher J Duffy, 2010, "National Driller", Mayan Pressurized Water Feature Found

Christopher J Duffy, 2010, "Public Radio International's (PRI) The World - Science Podcast", (66)

K. D. French and Christopher J Duffy, 2008, "Presión Hidráulica Entre los Antiguos Mayas de Palenque: La Primera en el Nuevo Mundo"

D. Marks, Christopher J Duffy and M. Seyfried, 2004, "ETRS Arrays: Boundary layer-to-water table total flux measurement system", 85, (47)

Christopher J Duffy, Y. Kumar and M. Kumar, 2004, "Integrated, Multi-Scale Modeling for Process, Parameter and Policy Research at the River Basin Scale", 85, (47)

P. Beeson, Christopher J Duffy, E. Springer and S. Panday, 2004, "Integrated Hydrologic Models for Closing the Water Budget: Whitewater River Basin, Kansas", 85, (47)

Lui, Gupta, Brookshire, Wagener, Springer and Christopher J Duffy, 2004, "High resolution Modeling in the Rio Grande Basin", 85, (47)

Christopher J Duffy, 2004, "Semi-discrete dynamical model for mountain-front recharge and water balance estimation, Rio Grande of southern Colorado and New Mexico", 9, pp. 255-271

R. Avissar and Christopher J Duffy, 2004, "Emerging Opportunities in Synergistic Water Cycle Research", 85, (17)

Christopher J Duffy, and , , 2004, "Analysis and Modeling of Low-Frequency Runoff Oscillations within Hydrologic Similarity Regions of Colorado River Basin", 85, (17)

F. Brachet and Christopher J Duffy, 2004, "Regional Groundwater Modeling for Source-Area Delineationand Recharge Estimation From Long Term Climate Forcing", 85, (17)

Christopher J Duffy, 2004, "A Semi-Discrete Dynamical Model for Mountain-FrontRecharge and Water Balance Estimation: The Rio Grande", 85, (17)

K. Sedemera, Christopher J Duffy and P. Reed, 2004, "Response of the Susquehanna River Basin to 99-Year Climate Forcing", 85, (17)

Y. Qu and Christopher J Duffy, 2004, "An Integrated Model for Channel, Overland and Subsurface Hydrology", 85, (17)

Service to Penn State:

Service to External Organizations: