Christopher J. Duffy
Professor of Civil Engineering, Pennsylvania State University
Penn State - The Pennsylvania State University
Duffy's Penn State page
PhD, New Mexico Institue of Mining and Technology, 1982
Stochastic and numerical modeling of groundwater flow and solute transport, modeling large-scale hydrologic systems, Stability of a Two-State Hillslope Model, Concentration-Discharge Dynamics in Watersheds, Visualizing Dynamics of Layered Hillslopes, Spatio-temporal analysis of the forced Richards' Equation
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CZO Publications
Papers/Books
2019
Exploring the effect of aspect to inform future earthcasts of climate-driven changes in weathering of shale. Sullivan, P., Godderis, Y., Shi, Y., Gu, X., Schott, J., Hasenmueller, E.A., Kaye, J., Duffy, C., Jin, L., and Brantley, S.L. (2019): Journal of Geophysical Research - Earth Surface
2017
Understanding watershed hydrogeochemistry: 1 Development of RT-Flux-PIHM. Bao, Chen, Li Li, Yuning Shi, Christopher Duffy (2017): Water Resources Research, 53(3) 2328–2345.
2017
Understanding Watershed Hydrogeochemistry: 2 Synchronized Hydrological and Geochemical Processes Drive Stream Chemostatic Behavior . Li Li, Chen Bao, Pamela L. Sullivan, Susan Brantley, Yuning Shi, Chris Duffy (2017): Water Resources Research, 53(3) 2346–2367
2016
Rapid tree water transport and residence times in a Pennsylvania catchment. Gaines KP, FC Meinzer, CJ Duffy, EM Thomas, and DM Eissenstat (2016): Ecohydrology, 9 (8): 1554–1565
2016
Atmospheric inputs of organic matter to a forested watershed: Variations from storm to storm over the seasons. Iavorivska, Lidiia, Elizabeth W. Boyer, Matthew P. Miller, Michael G. Brown, Terrie Vasilopoulos, Jose D. Fuentes, Christopher J. Duffy (2016): Atmospheric Environment , vol 147, p. 284-295
2016
Oxidative Dissolution under the Channel Leads Geomorphological Evolution at the Shale Hills Catchment . Sullivan, P.L., Hynek, S., Gu, X., Singha, K., White, T.S., West, N., Kim, H., Kirby, E., Clarke, B.; Duffy, C.; Brantley, S.L. (2016): American Journal of Science, 316 (10): 981-1026
2016
Cyber-Innovated Watershed Research at the Shale Hills Critical Zone Observatory. Yu Xuan, Christopher Duffy, Yolanda Gil, Lorne Leonard, Gopal Bhatt, and Evan Thomas (2016): IEEE SYSTEMS JOURNAL, 10 (3): 1239 - 1250
2016
Open science in practice: learning integrated modeling of coupled surface-subsurface flow processes from scratch. Yu Xuan; Christopher J. Duffy; Alain N. Rousseau; Gopal Bhatt; Álvaro Pardo Álvarez; Dominique Charron (2016): Earth and Space Science, 3 (5): 190–206
2016
Virtual experiments guide calibration strategies for a real-world watershed application of coupled surface-subsurface modeling . Yu, Xuan; Christopher Duffy; Yu Zhang; Gopal Bhatt; Yuning Shi (2016): Journal of Hydrologic Engineering, 21 (11):
2016
Fully-Coupled Hydrologic Processes for Modeling Landscape Evolution. Zhang, Y., R. Slingerland, and C. Duffy (2016): Environmental Modelling & Software, 82:89-107
2015
Exploring the role of domain partitioning on efficiency of parallel distributed hydrologic model simulations. Kumar, M., and Duffy, C. J. (2015): Journal of Hydrogeology & Hydrologic Engineering 4: 1-12 Cross-CZO
2015
Simulating high resolution soil moisture patterns in the Shale Hills watershed using a land surface hydrologic model. Shi, Y., D. C. Baldwin, K. J. Davis, X. Yu, C. J. Duffy, and H. Lin (2015): Hydrological Processes, Vol 29, Issue 21, pages 4624–4637.
2015
Parameter estimation of a physically-based land surface hydrologic model using an ensemble Kalman filter: A multivariate real-data experiment. Shi, Y., K. J. Davis, F. Zhang and C. J. Duffy, and X. Yu (2015): Advances in Water Resources, vol 83, 421–427
2015
A coupled surface-subsurface modeling framework to assess the impact of climate change on freshwater wetlands: a case study of seven watersheds of the Susquehanna River Basin. Yu Xuan, Gopal Bhatt, Christopher Duffy, Denice Wardrop, Raymond Najjar, Andrew Ross, Matthew Rydzik (2015): Climate Research, 66:211-228
2015
Reanalysis of water and carbon cycle models at a critical zone observatory. Yu, X., C. J. Duffy, J. Kaye, W. T. Crow, G. Bhatt, and Y. Shi (2015): In Remote Sensing of the Terrestrial Water Cycle, Geophysical Monograph 206, First Edition, Edited by Venkat Lakshmi
2015
Modelling long-term water yield effects of forest management in a Norway spruce forest. Yu, Xuan, Anna Lamačová, Christopher Duffy, Pavel Krám, Jakub Hruška, Tim White & Gopal Bhatt (2015): Hydrological Sciences Journal, 60:2, 174-191
2015
Hydrological model uncertainty due to spatial evapotranspiration estimation methods. Yu, Xuan, Anna Lamačová, Christopher J. Duffy, Pavel Krám, Jakub Hruška (2015): Computers & Geosciences, 90, 90–101
2014
Designing a Suite of Models to Explore Critical Zone Function. Duffy, C., Shi, Y., Davis, K., Slingerland, R., Li, L., Sullivan, P. L., Godderis, Y., Brantley, S. L. (2014): Procedia Earth and Planetary Science, Vol 10, p 7-15
2014
The CO2 consumption potential during gray shale weathering: Insights from the evolution of carbon isotopes in the Susquehanna Shale Hills critical zone observatory. Jin, L., Ogrinc, N., Yesavage, T., Hasenmueller, E.A., Ma, L., Sullivan, P.L., Kaye, J., Duffy, C., and Brantley, S.L. (2014): Geochimica et Cosmochimica Acta, (142) 260–280
2014
Evaluation of the parameter sensitivity of a coupled land surface hydrologic model. Shi, Y., K. J. Davis, F. Zhang, and C. J. Duffy (2014): Journal of Hydrometeorology, 15:279–299
2014
Parameter estimation of a physically-based land surface hydrologic model using the ensemble Kalman Filter: A synthetic experiment. Shi, Y., K. J. Davis, F. Zhang, C. J. Duffy, and X. Yu (2014): Water Resources Research, 50, 706—724
2014
The role of macropores and multi-resolution soil survey datasets for distributed surface–subsurface flow modeling. Yu Xuan, Christopher Duffy, Doug C. Baldwin, and Henry Lin (2014): Journal of Hydrology, 516:97-106
2013
Development of a Coupled Land Surface Hydrologic Model and Evaluation at a Critical Zone Observatory. Shi, Y., K. J. Davis, C. J. Duffy, and X. Yu (2013): Journal of Hydrometeorology, 14, 1401—1420
2013
Spatiotemporal patterns of water stable isotope compositions at the Shale Hills Critical Zone: Linkages to subsurface hydrologic processes. Thomas, Evan M., Henry Lin, Christopher J. Duffy, Pamela L. Sullivan, George H. Holmes, Susan L. Brantley and Lixin Jin (2013): Vadose Zone Journal
2013
Parameterization for distributed watershed modeling using national data and evolutionary algorithm. Yu, X., Bhatt, G., Duffy C. J., and Shi, Y. (2013): Computers & Geosciences 58:80-90
2011
Characterization of deep weathering and nanoporosity development in shale – A neutron study . Jin, L., Rother, G., Cole, D., Mildner, D., Duffy, C., Brantley, S.L. (2011): American Mineralogist 96:498–512.
2011
Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers . Li S., and Duffy, C. J. (2011): WATER RESOURCES RESEARCH VOL. 47, W03508,
2010
Dynamical modelling of concentration–age–discharge in watersheds. Duffy, C. (2010): Hydrol. Process. 24, 1711–1718 Cross-CZO National
2010
An object-oriented shared data model for GIS and distributed hydrologic models. Kumar, M., Bhatt, G., and Duffy, C.J. (2010): International Journal of Geographical Information Science 24 (7):1061-1079
2008
Critical Zone Observatories: Building a network to advance interdisciplinary study of Earth surface processes. Anderson, S.P., Bales, R.C., and Duffy, C.J. (2008): Mineralogical Magazine 72(1): 7-10. Cross-CZO National
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Other CZO Publications
2018
Understanding Hydrobiogeochemical Controls of Nutrient Export Using Process-based Watershed Modeling. Li Li, Wei Zhi*, Christopher Duffy, Gopal Bhatt (2018): Abstract H12E-03 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14 Dec
2016
Using Isotopic Age of Water as a Constraint on Model Identification at the Critical Zone Observatory (Invited). Duffy, C., Thomas, E., Bhatt, G., Holmes, G., Boyer, E.W., and Sullivan, P. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.
2016
Understanding Hydrogeochemical Processes at the Watershed Scale Using RT-Flux-PIHM. Li, L., Bao, C., Shi, Y., Duffy, C., and Brantley, S.L. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.
2016
Hydrogeochemical Synchrony Drives Chemostatic Behavior in Stream Chemistry (Invited). Li, L., Bao, C., Sullivan, P.L., Brantley, S.L., Shi, Y., and Duffy, C. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.
2016
Geomorphic equilibrium and the spatial variation of the geomorphic diffusivity at the Susquehanna Shale Hills Critical Zone Observatory. Zhang, Y., Slingerland, R.L., Duffy, C., Gu, X., Lin, H., and West, N. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.
2015
RT-Flux-PIHM: A Coupled hydrological, land Surface, and reactive transport Model. Bao, C., Li, L., Shi, Y., Duffy, C., and Brantley, S. L. (2015): CSDMS annual meeting, May 26 -28th, Boulder, CO
2015
Understanding the Concentration-Discharge Relationship of Chloride and Magnesium in Shale Hills Using RT-Flux-PIHM. Bao, Chen, Li Li, Yuning Shi, Pamela L Sullivan, Christopher Duffy and Susan L Brantley (2015): H53E-1700 Modeling the Critical Zone: Integrating Processes and Data across Disciplines and Scales II Posters, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
Comparison of Two Conceptually Different Physically-based Hydrological Models – Looking Beyond Streamflows . Rousseau, Alain N, Alvaro Pardo Álvarez, Xuan Yu, Stephane Savary and Christopher Duffy (2015): H23E-1624 Intercomparison Studies of Hydrological Models: Beyond Comparing Streamflows, Snow Water Equivalent, and Evapotranspiration Posters, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
The interplay of regolith evolution and watershed hydrodynamics in a first order watershed. Sullivan P.L., Hynek, S., Gu, X., Singha, K., White, T., West, N., Kim, H., Clarke, B., Kirby, E., Duffy, C., and Brantley, S.L (2015): 2015 Goldschmidt Conference, Prague, CZ, 16-21 Aug
2015
Using WITCH to determine the factors that govern shale weathering and solute fluxes in the Critical Zone Gordon Research Conference for Catchment Science. Sullivan PL, Goddéris Y, Shi Y, Gu X, Schott J, Duffy C, Brantley SL (2015): Gordon Research Conference for Catchment Science, 14-19 June, Proctor Academy, Andover, NH
2015
Using WITCH to determine the factors that govern shale weathering and solute fluxes in the Critical Zone. Sullivan, Pamela L., Yves Godderis, Yuning Shi, Xin Gu, Jacques Schott, Christopher Duffy and Susan Brantley (2015): H52C-06 Modeling the Critical Zone: Integrating Processes and Data across Disciplines and Scales I, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
Water-regolith-energy Interaction in Landscape Evolution and Its Influence on Forming Asymmetric Landscape: An Example from the Shale Hills Critical Zone Observatory of Central Pennsylvania. Zhang, Yu, Rudy L Slingerland, Yuning Shi, Christopher Duffy and Nicole West (2015): EP33D-06 Landscape Evolution from a Critical Zone Science Perspective II, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2014
An Accomplishment-Based Request for Renewal of the Susquehanna-Shale Hills Critical Zone Observatory (SSHO). Brantley, S.L., Duffy, C.J., Eissenstat, D.M., and Kirby, E. (2014): NSF Award # 1239285 Project Outcomes Report
2014
Using the Susquehanna - Shale Hills CZO to Project from the Geological Past to the Anthropocene Future . Brantley, Susan L., Davis, Kenneth J., Duffy, Christopher J., Eissenstat, David M., Li, Li (2014): NSF Award # 1331726 - Annual Report: Year 1
2014
B22A-01 Rapid Water Uptake and Limited Storage Capacity at Height of Growing Season in Four Temperate Tree Species in a Central Pennsylvania Catchment . Katie Gaines • Frederick Meinzer • Christopher Duffy • Evan Thomas • David Eissenstat (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th
2014
Model-data synthesis of the carbon and water cycles at very high resolution in complex topography. Kenneth Davis, Chris Duffy, David Eissenstat, Yuning Shi, Susan Brantley, Yuting He, Jason Kaye, Margot Kaye, Henry Lin, Andrew Neal, Xuan Yu, Fuqing Zhang (2014): AmeriFlux Annual Meeting, May 4-5, 2014
2014
EP23E-3634 The Interplay of Regolith Evolution and Watershed Hydrodynamics on Shale Weathering Fluxes . Pamela Sullivan • Scott Hynek • Kamini Singha • Tim White • Xin Gu • Christopher Duffy • Susan Brantley (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th
2014
Shale to Regolith Evolution: The Controls on Catchment Solute Fluxes . Sullivan PL, Goddéris Y, Shi Y, Singha K, Clarke B, Schott J, Duffy CJ, Brantley SL (2014): 2014 EGU General Assembly, Vienna | Austria | 27 April – 02 May
2014
The interplay of regolith evolution and watershed hydrodynamics at Susquehanna Shale Hills CZO Critical Zone All Hands Meeting, Yosemite Park CA . Sullivan PL, Hynek S, Singha K, White T, Gu X, Russo T, Kim H, Duffy C, Clarke B, and Brantley SL. (2014): Presented at the NSF National Critical Zone Observatory Program All Hands Meeting, Yosemite, CA, 21-24 Sept., 2014
2014
QUANTIFYING CLIMATE CONTROLS ON SHALE WEATHERING IN THE CRITICAL ZONE. SULLIVAN, Pamela L., GODDÉRIS, Yves, SHI, Yuning, SCHOTT, Jacques, DUFFY, C.J., and BRANTLEY, Susan L. (2014): GSA Northeastern Section 49th Annual Meeting 23–25 March 2014
2014
An Accomplishment-Based Request for Renewal of the Susquehanna-Shale Hills Critical Zone Observatory (SSHO). Susan L Brantley, Christopher J Duffy, David M Eissenstat, Eric Kirby (2014): NSF Award # 1239285 Final Report
2014
H43G-1032 Exploring the Influence of Topography on Belowground C Processes Using a Coupled Hydrologic-Biogeochemical Model . Yuning Shi • Kenneth Davis • David Eissenstat • Jason Kaye • Christopher Duffy • Xuan Yu • Yuting He (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th
2013
Sustaining Earth's Critical Zone - Basic Science and Interdisciplinary Solutions for Global Challenges. Banwart, S., Chorover, J., Gaillardet, J., Sparks, D., White, T., et al. (2013): The University of Sheffield, United Kingdom, ISBN: 978-0-9576890-0-8 Cross-CZO National
2013
Understanding the Hydrological Controls on the Water Chemistry at the Watershed Scale Using an Integrated Hydro-Thermo-Geochemical Model PIHM-RT. Bao, C., Li, L., Shi, Y., Qiao, C., Sullivan, P.L., Brantley, S.L., Duffy, C. (2013): Abstract H51A-1174 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2013
Using the Susquehanna - Shale Hills CZO to Project from the Geological Past to the Anthropocene Future. Brantley, Susan L., Davis, Kenneth J., Duffy, Christopher J., Eissenstat, David M., Li, Li (2013): NSF Award # 1331726
2013
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2013): NSF Award #1239285
2013
A call for a community strategy to the “Essential Terrestrial Variables” necessary for catchment modeling anywhere in the US (Invited). Duffy, C. and Leonard, L.N. (2013): Abstract U42A-03 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2013
The Catchment Isoscape: Theory and Experimental Evidence for the Isotopic Age of Water in a Critical Zone Observatory (Invited) . Duffy, C., Thomas, E., Sullivan, P.L., Bhatt, G., Yu, X. (2013): Abstract H41L-05 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2013
Using WITCH to quantify landscape and hydrologic controls on solute fluxes in the Critical Zone (Susquehanna Shale Hills Observatory, PA) . Pamela L. Sullivan, Yves Godderis, Yuning Shi, Jacques Schott, Christopher J. Duffy, Susan L. Brantley (2013): Mineralogical Magazine, 77(5) 2284
2013
Resolving the High Resolution Soil Moisture Pattern at the Shale Hills Watershed Using a Land Surface Hydrologic Model. Shi, Y., Baldwin, D.C., Davis, K.J., Yu, X., Duffy, C., Lin, H. (2013): Abstract H23F-1332 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2013
Developing approaches to hindcast and earthcast climate controls on solute fluxes during shale weathering in the Critical Zone . Sullivan, P.L., Godderis, Y., Shi, Y., Schott, J., Duffy, C., Brantley, S.L. (2013): Abstract EP11A-04 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2013
A New Hydrologic-Morphodynamic Model for Regolith Formation and Landscape Evolution. Zhang, Y., Slingerland, R.L., Duffy, C. (2013): Abstract EP33A-0858 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.
2012
NSF Proposal: EarthCube Domain End-User Workshop: Engaging the Critical Zone community to bridge “long tail” science with big data. Aufdenkampe, A.K.; Duffy, C.J.; Tucker, G.E. (2012): NSF Award #1252238 Cross-CZO National
2012
An Accomplishment-Based Request for Renewal of the Susquehanna-Shale Hills Critical Zone Observatory (SSHO). Brantley, S.L., Duffy, C.J., Eissenstat, D.M., and Kirby, E. (2012): NSF Award # 1239285
2012
Critical Zone Observatories (CZOs): Integrating measurements and models of Earth surface processes to improve prediction of landscape structure, function and evolution (Invited). Chorover J., Anderson S. P., Bales R. C., Duffy C., Scatena F. N., Sparks D. L., White T. (2012): Abstract GCS4A-05 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec (Talk) Cross-CZO National
2012
Critical Zone Observatories (CZOs): Integrating measurements and models of Earth surface processes to improve prediction of landscape structure, function and evolution (Invited). Chorover, J., Anderson, S.P., Bales, R.C., Duffy, C., Scatena, F.N., Sparks, D.L., and White, T. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract GC54A-05. National
2012
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2012): NSF Award # 0725019
2012
The Essential Terrestrial Variables (ETV’s) in Support of a National Framework for Numerical Watershed Prediction (Invited). Duffy, C., Leonard, L.N., Ahalt, S., Idaszak, R., Tarboton, D., Hooper, R.P., Band, L.E. (2012): AGU Annual Fall Conference Proceedings
2012
Parameter Estimation of a Physically-Based Land Surface Hydrologic Model Using the Ensemble Kalman Filter. Shi, Y., Davis, K.J., Zhang, F., Duffy, C. (2012): AGU Annual Fall Conference Proceedings
2012
Fracture Patterns within the Shale Hills Critical Zone Observatory (Invited). Singha, K., White, T., Perron, J., Chattopadhyay, P.B., Duffy, C. (2012): AGU Annual Fall Conference Proceedings
2012
Spatial and Temporal Patterns of Stable Isotopes in Soil and Ground Water at the Shale Hills Critical Zone Observatory. Thomas, E., G. Holmes, H. Lin, and C. Duffy (2012): 2nd International Conference on Hydropedology, Leipzig, Germany, July 22-27, 2012.
2012
Comparison of Stable Isotope Composition in Precipitation between Atmospheric General Circulation Models and Shale Hills Critical Zone Observations. Thomas, E., Yoshimura, K., Duffy, C. (2012): AGU Annual Fall Conference Proceedings
2012
Establishing a Micronetwork at the Shale Hills Critical Zone Observatory. Twiest, B, K. J. Davis, C. Duffy, C. Duffy (2012): Annual Meeting of the American Meteorological Society
2012
A Two-Scale Parameterization for Distributed Watershed Modeling Using National Data and Evolutionary Algorithm. Yu, X., Bhatt, G., Duffy, C., Shi, Y. (2012): AGU Annual Fall Conference Proceedings
2011
'Age' of water: a physics based, fully coupled, distributed model for watershed assessment. Bhatt, G., Yu, X., Duffy, C., Kemanian, A., Kumar, M., Leonard, L.N. (2011): AGU Annual Fall Conference Proceedings
2011
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2011): NSF Award # 0725019
2011
The Virtual Watershed Observatory: Cyberinfrastructure for Model-Data Integration and Access (Invited). Duffy, C., Leonard, L.N., Giles, L., Bhatt, G., Yu, X (2011): AGU Annual Fall Conference Proceedings
2011
Controls of mineralogy and hydrology on weathering fluxes in the Susquehanna Shale Hills Critical Zone Observatory. Jin, L., Andrews, D.M., Holmes, G., Duffy, C., Lin, H., Brantley, S.L. (2011): AGU Annual Fall Conference Proceedings
2011
A Watershed Scale Groundwater-Land-Surface Model Poster. Shi, Y., K. J. Davis, C. J. Duffy, and X. Yu (2011): 25th Conference on Hydrology, Seattle, WA. American Meteorological Society
2011
Hyporheic Zone Study at Susquehanna/Shale Hills Critical Zone Observatory. Yu, X., Duffy, C., Bhatt, G., Kumar, M. (2011): AGU Annual Fall Conference Proceedings
2011
Wetlands Response to Climate Change across Susquehanna River Basin. Yu, X., Duffy, C., Bhatt, G., Kumar, M. (2011): AGU Annual Fall Conference Proceedings
2010
Future Directions for Critical Zone Observatory (CZO) Science. Anderson, R.S., Anderson, S., Aufdenkampe, A.K., Bales, R., Brantley, S., Chorover, J., Duffy, C.J., Scatena, F.N., Sparks, D.L., Troch, P.A., Yoo, K. (2010): CZO Community, December 29, 2010 Cross-CZO National
2010
Identification and Classification of Wetlands using Physics based Distributed Hydrologic Model. Bhatt, G., Kumar, M., Duffy, C., Dressler, K.A., Wardrop, D.H. (2010): AGU Annual Fall Conference Proceedings
2010
Simulation and Sensing at the Shale Hills Critical Zone Observatory (Invited). Duffy, C. (2010): Department talk at Stroud Water Center and Christina CZO
2010
The Shale Hills Critical Zone Observatory (Invited). Duffy, C. (2010): The SoilTrEC Workshop - January 2010
2010
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2010): NSF Award # 0725019
2010
The age of recharge in hydrologic flow systems: the Shale Hills Critical Zone Observatory. Duffy, C. and Holmes, G. (2010): Chesapeake Modeling Symposium, May 10-11, 2010
2010
Watershed reanalysis: data assimilation from strip charts to embedded sensor networks (Invited). Duffy, C., Kumar, M., Bhatt, G., Leonard, L.N., Yu, X., Shi, Y., Davis, K.J., Holmes, G. (2010): AGU Annual Fall Conference Proceedings
2010
Evidence of mobile/immobile flow at the Susquehanna Shale Hills Critical Zone Observatory using the stable isotope network. Holmes, G., Duffy, C., Boyer, E.W., Jin, L., Andrews, D. (2010): AGU Annual Fall Conference Proceedings
2010
Understanding and Prediction: An Evolving Paradigm for Modeling Hydrologic Process Feedbacks at Multiple Scales. Kumar, M., Duffy, C., Bhatt, G. (2010): AGU Annual Fall Conference Proceedings
2010
Data-intensive hydrologic modeling: A Cloud strategy for integrating PIHM, GIS, and Web-Services. Leonard, L.N., Duffy, C., Bhatt, G. (2010): AGU Annual Fall Conference Proceedings
2010
Real-Time Implementation of the Penn State Integrated Hydrologic Modeling System: The Shale Hills Critical Zone Observatory. Yu, X., Duffy, C., Bhatt, G., Shi, Y., Leonard, L.N., Kumar, M. (2010): AGU Annual Fall Conference Proceedings
2009
The Shale Hills Critical Zone Observatory for Embedded Sensing and Simulation (Invited). Duffy, C. (2009): Interagency Steering Committee on Multimedia Environmental Models Workshop,
2009
The age of recharge in mountain-front flow systems (Invited). Duffy, C. (2009): AGU Chapman Conference
2009
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2009): NSF Award # 0725019
2008
Susquehanna/Shale Hills Critical Zone Observatory: Annual Report to National Science Foundation. Duffy, C. and Brantley, S.L. (2008): NSF Award # 0725019
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Models
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News
Water Resources Research Special Collection: Concentration-discharge relations in the critical zone
30 Oct 2017 - Water Resources Research published a new special collection in September 2017 featuring concentration-discharge research from multiple CZOs.
Sustaining Earth’s Critical Zone - Report from 2011 International CZ Meeting
29 Jul 2013 - International CZ science community outlines interdisciplinary research needed to address land use changes, climate change, and biodiversity decline
International Innovation Publishes August Edition with Special Focus on US Critical Zone Program
30 Aug 2012 - The European magazine, International Innovation Environment, published bi-annually, focused the August issue on "How science must lead the way to a...
CZO PI takes Penn State Hydrologic Model to Chania, Crete
19 Jul 2012 - In a four day workshop focused on reactive transport modeling, PI Chris Duffy and his research group teach the finer points of the Penn State...
CZO PI featured in flood forecasting article for Research | Penn State
28 Sep 2011 - Do we predict floods well? This question and several others were asked of Chris Duffy, Professor of Civil Engineering. His response, several factors...
Shale Hills CZO featured article in Research|PennState
25 Oct 2010 - Members of the University Research Magazine Association and the National Association of Science Writers focused a September article on the Critical...
CZO hosts students and faculty from University of Pittsburgh
08 Oct 2010 - The Pitt Chapter of IAHR, the International Association of Hydro-Environment Engineering and Research, spent a day in the catchment visiting with...
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Events
SSHCZO Seminar Series - Spring 2014
MODELING, OPTIMIZATION, AND ECOHYDROLOGIC ASSESSMENT OF WATERSHED SYSTEMS
202 Hammond Building.EarthCube-CZO Workshop
EarthCube Domain Workshop: Engaging the Critical Zone community to bridge long tail science with big data
University of Delaware, Newark, DE.Critical Zone Seminar Series - All Hands Fall 2012
Critical Zone Seminar Series - All Hands Fall 2012
117 EES Building.CUAHSI Cyberseminar - Chris Duffy on Shale HIlls CZO
The Susquehanna/Shale Hills Critical Zone Observatory: A Earth-System testbed for process and prediction
Online.PIHM Workshop
Multiscale Modeling Using the Penn State Integrated Hydrologic Modeling System (PIHM) Workshop
Sackett Building .
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