World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
41
Citations
6700
World Ranking
7692
National Ranking
2744

Christopher J. Duffy publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Christopher J. Duffy sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 188 publications — 60th percentile

60% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Christopher J. Duffy D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Christopher J. Duffy sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 41 D-Index — 22nd percentile

22% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Christopher J. Duffy is affiliated with Pennsylvania State University in the United States and has contributed extensively to environmental science, with a particular focus on hydrology and watershed management. Their work spans multiple interconnected subfields including environmental engineering, water science and technology, and artificial intelligence applied in environmental contexts.

The research topics covered by Duffy include:

  • Hydrology and Watershed Management Studies
  • Hydrological Forecasting Using AI
  • Groundwater Flow and Contamination Studies
  • Flood Risk Assessment and Management
  • Soil and Unsaturated Flow
  • Neural Networks and Applications
  • Data Stream Mining Techniques

Duffy's publication record includes papers appearing in venues such as arXiv (Cornell University), Water Resources Research, Geoscientific Model Development, Hydrology and Earth System Sciences, and ACM Transactions on Interactive Intelligent Systems.

Among recent papers are:

  • Lake thermal structure drives interannual variability in summer anoxia dynamics in a eutrophic lake over 37 years (2021, Hydrology and Earth System Sciences)
  • Artificial Intelligence for Modeling Complex Systems: Taming the Complexity of Expert Models to Improve Decision Making (2021, ACM Transactions on Interactive Intelligent Systems)
  • Regionalization in a Global Hydrologic Deep Learning Model: From Physical Descriptors to Random Vectors (2022, Water Resources Research)
  • Physics Guided Machine Learning Methods for Hydrology (2020, arXiv)
  • Capturing hotspots of fresh submarine groundwater discharge using a coupled surface-subsurface model (2021, Journal of Hydrology)

Duffy frequently collaborates with a group of researchers active in related fields. Their common co-authors include John L. Nieber, Vipin Kumar, Michael Steinbach, Lele Shu, and Rahul Ghosh, reflecting interdisciplinary and collaborative research approaches.

The concentration of Duffy's work on environmental and engineering challenges involving water flow, hydrological prediction, and the integration of artificial intelligence methods provides insight into their scientific interests and expertise.

Best Publications

  • Ecohydrology of water-limited environments: A scientific vision

    Brent D. Newman;Bradford P. Wilcox;Steven R. Archer;David D. Breshears

  • A semidiscrete finite volume formulation for multiprocess watershed simulation

    Yizhong Qu;Christopher J. Duffy

  • An Agenda for Land-Surface Hydrology Research and a Call for the Second International Hydrological Decade

    Dara Entekhabi;Ghassem R. Asrar;Alan K. Betts;Keith J. Beven

  • Most computational hydrology is not reproducible, so is it really science?

    Christopher Hutton;Thorsten Wagener;Jim Freer;Dawei Han

  • Groundwater circulation in a closed desert basin: Topographic scaling and climatic forcing

    Christopher J. Duffy;Sumani Al-Hassan

  • Simulating the river-basin response to atmospheric forcing by linking a mesoscale meteorological model and hydrologic model system

    Z Yu;M.N Lakhtakia;B Yarnal;R.A White

  • Critical Zone Observatories: Building a network to advance interdisciplinary study of Earth surface processes

    Suzanne P. Anderson;R. C. Bales;C. J. Duffy

  • A tightly coupled GIS and distributed hydrologic modeling framework

    Gopal Bhatt;Mukesh Kumar;Christopher J. Duffy

  • Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers

    Shuangcai Li;Christopher J. Duffy

  • A TWO-STATE INTEGRAL-BALANCE MODEL FOR SOIL MOISTURE AND GROUNDWATER DYNAMICS IN COMPLEX TERRAIN

    Christopher J. Duffy

  • A Second-Order Accurate, Finite Volume–Based, Integrated Hydrologic Modeling (FIHM) Framework for Simulation of Surface and Subsurface Flow

    Mukesh Kumar;Christopher J. Duffy;Karen M. Salvage

  • Development of a Coupled Land Surface Hydrologic Model and Evaluation at a Critical Zone Observatory

    Yuning Shi;Kenneth J. Davis;Christopher J. Duffy;Xuan Yu

  • Soil carbon, multiple benefits

    Eleanor Milne;Eleanor Milne;Steven A. Banwart;Elke Noellemeyer;David James Abson

  • Characterization of deep weathering and nanoporosity development in shale—A neutron study

    Lixin Jin;Gernot Rother;David R. Cole;David F.R. Mildner

  • Soil Processes and Functions in Critical Zone Observatories: Hypotheses and Experimental Design

    Steven Banwart;Stefano M. Bernasconi;Jaap Bloem;Winfried Blum

  • Understanding watershed hydrogeochemistry: 2. Synchronized hydrological and geochemical processes drive stream chemostatic behavior.

    Li Li;Chen Bao;Pamela L. Sullivan;Susan Brantley

  • Density-driven groundwater flow in closed desert basins: field investigations and numerical experiments

    Ying Fan;Christopher J Duffy;Douglas S Oliver

  • Soil processes and functions across an international network of Critical Zone Observatories: Introduction to experimental methods and initial results

    Steven Banwart;Manoj Menon;Stefano M. Bernasconi;Jaap Bloem

  • Searching for electromagnetic counterparts to gravitational-wave merger events with the prototype Gravitational-wave Optical Transient Observer (GOTO-4)

    Benjamin P. Gompertz;Ryan J. Cutter;D. Steeghs;D. Steeghs;D. K. Galloway

  • Hydrological Aspects of Weather Prediction and Flood Warnings: Report of the Ninth Prospectus Development Team of the U.S. Weather Research Program.

    Kelvin K. Droegemeier;J. D. Smith;S. Businger;C. Doswell

  • A Frequency Domain Approach to Water Quality Modeling in Groundwater: Theory

    Christopher J. Duffy;L. W. Gelhar

  • Lake thermal structure drives interannual variability in summer anoxia dynamics in a eutrophic lake over 37 years

    Robert Ladwig;Paul C. Hanson;Hilary A. Dugan;Cayelan C. Carey

Frequent Co-Authors

P. T. O'Brien
P. T. O'Brien University of Leicester
Yolanda Gil
Yolanda Gil University of Southern California
Susan L. Brantley
Susan L. Brantley Pennsylvania State University
Felix Aharonian
Felix Aharonian Dublin Institute For Advanced Studies
Michael Backes
Michael Backes University of Oxford
Kenneth J. Davis
Kenneth J. Davis Pennsylvania State University
Vipin Kumar
Vipin Kumar University of Minnesota
Thorsten Wagener
Thorsten Wagener University of Potsdam
Justyn R. Maund
Justyn R. Maund Royal Holloway University of London
Andrew J. Levan
Andrew J. Levan University of Warwick

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