World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
48
Citations
13518
World Ranking
5419
National Ranking
1982

Peggy E. O'Neill 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 Peggy E. O'Neill 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: 260 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Peggy E. O'Neill 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 Peggy E. O'Neill 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: 48 D-Index — 44th percentile

44% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2016 - IEEE Fellow For contributions to the remote sensing of soil moisture

Overview

Peggy E. O'Neill is affiliated with the Goddard Space Flight Center in the United States. Their research primarily focuses on Earth and Planetary Sciences as well as Environmental Science, with particular expertise in Atmospheric Science and Environmental Engineering. Their work encompasses several topics related to remote sensing and soil moisture analysis.

The scientist's main fields of study include:

  • Earth and Planetary Sciences
  • Environmental Science

Their subfields of specialization involve:

  • Atmospheric Science
  • Environmental Engineering
  • Aerospace Engineering
  • Civil and Structural Engineering
  • Management, Monitoring, Policy and Law

Peggy E. O'Neill's core research topics cover:

  • Soil Moisture and Remote Sensing
  • Precipitation Measurement and Analysis
  • Cryospheric studies and observations
  • Climate change and permafrost
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • Soil and Unsaturated Flow
  • Soil Geostatistics and Mapping

Their recent notable papers include:

  • Validation of Soil Moisture Data Products From the NASA SMAP Mission, 2021, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • Improved SMAP Dual-Channel Algorithm for the Retrieval of Soil Moisture, 2020, IEEE Transactions on Geoscience and Remote Sensing
  • SMAP Detects Soil Moisture Under Temperate Forest Canopies, 2020, Geophysical Research Letters
  • Regularized Dual-Channel Algorithm for the Retrieval of Soil Moisture and Vegetation Optical Depth From SMAP Measurements, 2021, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • How Satellite Soil Moisture Data Can Help to Monitor the Impacts of Climate Change: SMAP Case Studies, 2020, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Frequently published venues for their work are:

  • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • IEEE Transactions on Geoscience and Remote Sensing
  • Geophysical Research Letters
  • Remote Sensing
  • Journal of Hydrology

The scientist has collaborated with coauthors including:

  • Michael H. Cosh
  • Rajat Bindlish
  • Andreas Colliander
  • David D. Bosch
  • Chandra Holifield Collins

Peggy E. O'Neill was named an IEEE Fellow in 2016 for contributions to the remote sensing of soil moisture.

Best Publications

  • The Soil Moisture Active Passive (SMAP) Mission

    Dara Entekhabi;Eni G Njoku;Peggy E O'Neill;Kent H Kellogg

  • Validation of SMAP surface soil moisture products with core validation sites

    A. Colliander;T.J. Jackson;R. Bindlish;S. Chan

  • Estimation of bare surface soil moisture and surface roughness parameter using L-band SAR image data

    Jiancheng Shi;J. Wang;A.Y. Hsu;P.E. O'Neill

  • Assessment of the SMAP Passive Soil Moisture Product

    Steven K. Chan;Rajat Bindlish;Peggy E. O'Neill;Eni Njoku

  • Modelling the Passive Microwave Signature from Land Surfaces: A Review of Recent Results and Application to the L-Band SMOS SMAP Soil Moisture Retrieval Algorithms

    J.-P. Wigneron;T.J. Jackson;P. O'Neill;G. De Lannoy

  • Development and assessment of the SMAP enhanced passive soil moisture product

    S. K. Chan;R. Bindlish;P. O'Neill;T. Jackson

  • Passive Microwave Soil Moisture Research

    Thomas Schmugge;Peggy E. O'Neill;James R. Wang

  • Multifrequency Measurements of the Effects of Soil Moisture, Soil Texture, And Surface Roughness

    James R. Wang;Peggy E. O'Neill;Thomas J. Jackson;Edwin T. Engman

  • The SMAP and Copernicus Sentinel 1A/B microwave active-passive high resolution surface soil moisture product

    Narendra N. Das;Dara Entekhabi;R. Scott Dunbar;Mario J. Chaubell

  • The hydrosphere State (hydros) Satellite mission: an Earth system pathfinder for global mapping of soil moisture and land freeze/thaw

    D. Entekhabi;E.G. Njoku;P. Houser;M. Spencer

  • SMAP Handbook–Soil Moisture Active Passive: Mapping Soil Moisture and Freeze/Thaw from Space

    Dara Entekhabi;Simon Yueh;Peggy E O’Neill;Kent H Kellogg

  • A parameterized surface reflectivity model and estimation of bare-surface soil moisture with L-band radiometer

    Jiancheng Shi;K.S. Chen;Qin Li;T.J. Jackson

  • Attenuation of soil microwave emission by corn and soybeans at 1.4 and 5 GHz

    T.J. Jackson;P.E. O'Neill

  • SMAP L-Band Microwave Radiometer: Instrument Design and First Year on Orbit

    Jeffrey R. Piepmeier;Paolo Focardi;Kevin A. Horgan;Joseph Knuble

  • Partitioning evapotranspiration in semiarid grassland and shrubland ecosystems using time series of soil surface temperature

    M.S. Moran;R.L. Scott;T.O. Keefer;W.E. Emmerich

  • Effects of corn on C- and L-band radar backscatter: A correction method for soil moisture retrieval

    A.T. Joseph;R. van der Velde;P.E. O'Neill;R. Lang

  • Evaluating soil moisture retrievals from ESA's SMOS and NASA's SMAP brightness temperature datasets.

    A. Al-Yaari;J.-P. Wigneron;Y. Kerr;N. Rodriguez-Fernandez

  • Passive microwave observation of diurnal surface soil moisture

    T.J. Jackson;P.E. O'Neill;C.T. Swift

  • An observing system simulation experiment for hydros radiometer-only soil moisture products

    W.T. Crow;S.T.K. Chan;D. Entekhabi;P.R. Houser

  • Global Soil Moisture From the Aquarius/SAC-D Satellite: Description and Initial Assessment

    Rajat Bindlish;Thomas Jackson;Michael Cosh;Tianjie Zhao

  • Improved SMAP Dual-Channel Algorithm for the Retrieval of Soil Moisture

    Mario Julian Chaubell;Simon H. Yueh;R. Scott Dunbar;Andreas Colliander

Frequent Co-Authors

Thomas J. Jackson
Thomas J. Jackson Agricultural Research Service
Eni G. Njoku
Eni G. Njoku Jet Propulsion Lab
Michael H. Cosh
Michael H. Cosh Agricultural Research Service
Simon Yueh
Simon Yueh Jet Propulsion Lab
Rajat Bindlish
Rajat Bindlish Goddard Space Flight Center
Andreas Colliander
Andreas Colliander California Institute of Technology
Jiancheng Shi
Jiancheng Shi Chinese Academy of Sciences
Aaron A. Berg
Aaron A. Berg University of Guelph
Jeffrey P. Walker
Jeffrey P. Walker Monash University

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