World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
45
Citations
7961
World Ranking
4431
National Ranking
1708

Ciaran J. Harman publications per year

1953: 1 publications 1954: 0 publications 1955: 0 publications 1956: 0 publications 1957: 0 publications 1958: 0 publications 1959: 0 publications 1960: 0 publications 1961: 0 publications 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 0 publications 1994: 0 publications 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 0 publications 2000: 0 publications 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 0 publications 2005: 3 publications 2006: 0 publications 2007: 0 publications 2008: 3 publications 2009: 9 publications 2010: 7 publications 2011: 12 publications 2012: 3 publications 2013: 6 publications 2014: 15 publications 2015: 8 publications 2016: 16 publications 2017: 20 publications 2018: 14 publications 2019: 18 publications 2020: 15 publications 2021: 7 publications 2022: 11 publications 2023: 8 publications 2024: 12 publications 2025: 8 publications 2026: 1 publications
1953 2026

197 publications in total across all disciplines

Ciaran J. Harman publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Ciaran J. Harman sits on this spectrum.

38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38 publications 603+

This scientist: 145 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

Ciaran J. Harman D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Ciaran J. Harman sits on this spectrum.

30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 45 D-Index — 53rd percentile

53% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

Overview

Ciaran J. Harman is affiliated with Johns Hopkins University in the United States. Their research primarily focuses on environmental science, with emphases on water-related processes and technological applications within the field.

Their work spans several main fields of study, including:

  • Environmental Science

Within these fields, Harman's publications cover a range of subfields, notably:

  • Water Science and Technology
  • Environmental Engineering
  • Geophysics
  • Global and Planetary Change
  • Ecology

The principal research topics addressed in their work include:

  • Hydrology and Watershed Management Studies
  • Hydrology and Sediment Transport Processes
  • Soil erosion and sediment transport
  • Soil and Water Nutrient Dynamics
  • Plant Water Relations and Carbon Dynamics
  • Groundwater flow and contamination studies
  • Hydrological Forecasting Using AI

Harman has contributed extensively to academic journals, particularly in venues such as:

  • Water Resources Research
  • Journal of Geophysical Research Earth Surface
  • Zenodo (CERN European Organization for Nuclear Research)
  • Earth Surface Processes and Landforms
  • Nature Reviews Earth & Environment

Recent publications by Harman include:

  • "Differentiable modelling to unify machine learning and physical models for geosciences" (2023) in Nature Reviews Earth & Environment
  • "Fill-and-Spill: A Process Description of Runoff Generation at the Scale of the Beholder" (2021) in Water Resources Research
  • "Transit Time Estimation in Catchments: Recent Developments and Future Directions" (2022) in Water Resources Research
  • "Using Particle Tracking to Understand Flow Paths, Age Distributions, and the Paradoxical Origins of the Inverse Storage Effect in an Experimental Catchment" (2020) in Water Resources Research
  • "Signatures of Hydrologic Function Across the Critical Zone Observatory Network" (2020) in Water Resources Research

Collaborations form a significant part of Harman's research efforts. Frequent co-authors include:

  • Li Li
  • Markus Hrachowitz
  • David G. Litwin
  • Miriam Coenders-Gerrits
  • Martyn Clark

Best Publications

  • “Panta Rhei—Everything Flows”: Change in hydrology and society—The IAHS Scientific Decade 2013–2022

    A. Montanari;G. Young;H.H.G. Savenije;D.A. Hughes

  • The future of hydrology: an evolving science for a changing world.

    Thorsten Wagener;Murugesu Sivapalan;Murugesu Sivapalan;Peter A. Troch;Brian L. McGlynn

  • Time-variable transit time distributions and transport: Theory and application to storage-dependent transport of chloride in a watershed

    Ciaran J. Harman

  • Geophysical imaging reveals topographic stress control of bedrock weathering

    J. St. Clair;S. Moon;W. S. Holbrook;J. T. Perron

  • Differentiable modelling to unify machine learning and physical models for geosciences

    Unknown

  • Vegetation-infiltration relationships across climatic and soil type gradients

    S. E. Thompson;C. J. Harman;P. Heine;G. G. Katul

  • Climate and vegetation water use efficiency at catchment scales

    Peter A. Troch;Guillermo F. Martinez;Valentijn R. N. Pauwels;Matej Durcik

  • Storage selection functions : A coherent framework for quantifying how catchments store and release water and solutes

    Andrea Rinaldo;Paolo Benettin;Ciaran J. Harman;Markus Hrachowitz

  • Spatial scale dependence of ecohydrologically mediated water balance partitioning: A synthesis framework for catchment ecohydrology

    Sally E. Thompson;Sally E. Thompson;Ciaran J. Harman;Peter A. Troch;Paul D. Brooks

  • Comparative hydrology across AmeriFlux sites: The variable roles of climate, vegetation, and groundwater

    S. E. Thompson;C. J. Harman;A. G. Konings;Murugesu Sivapalan;Murugesu Sivapalan

  • Functional model of water balance variability at the catchment scale: 1. Evidence of hydrologic similarity and space-time symmetry

    Murugesu Sivapalan;Murugesu Sivapalan;Mary A. Yaeger;Ciaran J. Harman;Xiangyu Xu;Xiangyu Xu

  • Power law catchment‐scale recessions arising from heterogeneous linear small‐scale dynamics

    C. J. Harman;M. Sivapalan;M. Sivapalan;P. Kumar

  • The importance of hydraulic groundwater theory in catchment hydrology: The legacy of Wilfried Brutsaert and Jean‐Yves Parlange

    Peter A. Troch;Alexis Berne;Patrick Bogaart;Ciaran Harman

  • Transit Time Estimation in Catchments: Recent Developments and Future Directions

    Unknown

  • Catchment classification: hydrological analysis of catchment behavior through process-based modeling along a climate gradient

    G. Carrillo;P. A. Troch;M. Sivapalan;Thorsten Wagener

  • Fill-and-Spill: A Process Description of Runoff Generation at the Scale of the Beholder

    Jeffrey J. McDonnell;Jeffrey J. McDonnell;Christopher Spence;Daniel J. Karran;H. J. (Ilja) van Meerveld

  • Developing predictive insight into changing water systems: use-inspired hydrologic science for the Anthropocene

    S.E. Thompson;M. Sivapalan;C.J. Harman;V. Srinivasan

  • Variability and uncertainty in reach bankfull hydraulic geometry

    Ciaran Harman;Ciaran Harman;Ciaran Harman;Michael Stewardson;Michael Stewardson;Ronald DeRose

  • Advancing catchment hydrology to deal with predictions under change

    U. Ehret;H. V. Gupta;M. Sivapalan;S. V. Weijs

  • Optimizing dam release rules to meet environmental flow targets

    Ciaran Harman;Michael Stewardson

  • Spatiotemporal scaling of hydrological and agrochemical export dynamics in a tile-drained Midwestern watershed

    K. Guan;Sally E. Thompson;Sally E. Thompson;C. J. Harman;N. B. Basu

  • Characterizing the Fluxes and Age Distribution of Soil Water, Plant Water, and Deep Percolation in a Model Tropical Ecosystem

    Jaivime Evaristo;Jaivime Evaristo;Minseok Kim;Minseok Kim;Joost van Haren;Luke A. Pangle

  • Coevolution of nonlinear trends in vegetation, soils, and topography with elevation and slope aspect: A case study in the sky islands of southern Arizona

    Jon D. Pelletier;Greg A. Barron-Gafford;David D. Breshears;Paul D. Brooks

Frequent Co-Authors

Murugesu Sivapalan
Murugesu Sivapalan University of Illinois at Urbana-Champaign
Peter Troch
Peter Troch University of Arizona
William P. Ball
William P. Ball Johns Hopkins University
Sally E. Thompson
Sally E. Thompson University of Western Australia
Adam S. Ward
Adam S. Ward Oregon State University
Aaron I. Packman
Aaron I. Packman Northwestern University
Steven M. Wondzell
Steven M. Wondzell US Forest Service
Nandita B. Basu
Nandita B. Basu University of Waterloo
Jeffrey J. McDonnell
Jeffrey J. McDonnell University of Saskatchewan
David M. Hannah
David M. Hannah University of Birmingham

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