World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
45
Citations
10097
World Ranking
6296
National Ranking
2272

Todd G. Caldwell 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 Todd G. Caldwell 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: 169 publications — 51st percentile

51% of scientists in this discipline score the same or lower.

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

Todd G. Caldwell 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 Todd G. Caldwell 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: 45 D-Index — 36th percentile

36% 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

  • 2017 - VZJ Reviewer-Editor's Citation of Excellence Award, American Society of Agronomy

Overview

Todd G. Caldwell is affiliated with the United States Geological Survey in the United States. Their research spans multiple areas within environmental science and earth and planetary sciences, with a particular focus on soil moisture and remote sensing, soil and unsaturated flow, climate change and permafrost, cryospheric studies and observations, precipitation measurement and analysis, hydrology and watershed management studies, and groundwater flow and contamination studies.

Their recent publications 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
  • Going Beyond Low Flows: Streamflow Drought Deficit and Duration Illuminate Distinct Spatiotemporal Drought Patterns and Trends in the U.S. During the Last Century, 2022, Water Resources Research
  • Developing a strategy for the national coordinated soil moisture monitoring network, 2021, Vadose Zone Journal
  • 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

Frequent co-authors of the scientist include:

  • Michael H. Cosh
  • Andreas Colliander
  • Aaron Berg
  • David D. Bosch
  • José Martínez-Fernández

The primary publication venues for their work are:

  • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
  • Vadose Zone Journal
  • Journal of Hydrology
  • Journal of Visualized Experiments
  • IEEE Transactions on Geoscience and Remote Sensing

Their main fields of study comprise environmental science and earth and planetary sciences. Subfields covered include environmental engineering, atmospheric science, civil and structural engineering, global and planetary change, and water science and technology.

Todd G. Caldwell was recognized with the VZJ Reviewer-Editor's Citation of Excellence Award by the American Society of Agronomy in 2017.

Best Publications

  • The magnetotelluric phase tensor

    T. Grant Caldwell;T. Grant Caldwell;Hugh M. Bibby;Colin Brown

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

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

  • Assessment of the SMAP Passive Soil Moisture Product

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

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

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

  • Geophysical evidence on the structure of the Taupo Volcanic Zone and its hydrothermal circulation

    H.M. Bibby;T.G. Caldwell;F.J. Davey;T.H. Webb

  • Assessment of the SMAP Level-4 surface and root-zone soil moisture product using in situ measurements

    Rolf H. Reichle;Gabrielle J. M. De Lannoy;Qing Liu;Joseph V. Ardizzone

  • Determinable and non-determinable parameters of galvanic distortion in magnetotellurics

    H. M. Bibby;T. G. Caldwell;C. Brown

  • 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

  • Fluid and deformation regime of an advancing subduction system at Marlborough, New Zealand

    Philip E. Wannamaker;T. Grant Caldwell;George R. Jiracek;Virginie Maris

  • Fluid generation and pathways beneath an active compressional orogen, the New Zealand Southern Alps, inferred from magnetotelluric data

    Philip E. Wannamaker;George R. Jiracek;John A. Stodt;T. Grant Caldwell

  • Distribution of melt beneath Mount St Helens and Mount Adams inferred from magnetotelluric data

    Graham James Hill;Graham James Hill;T Grant Caldwell;Wiebke Heise;Wiebke Heise;Darren G Chertkoff

  • Three‐dimensional modelling of magnetotelluric data from the Rotokawa geothermal field, Taupo Volcanic Zone, New Zealand

    W. Heise;T. G. Caldwell;H. M. Bibby;S. C. Bannister

  • Forest Floor Carbon and Nitrogen Losses Due to Prescription Fire

    Todd Caldwell;D. W. Johnson;W. W. Miller;R. G. Qualls

  • Melt distribution beneath a young continental rift: The Taupo Volcanic Zone, New Zealand

    Wiebke Heise;Hugh M. Bibby;T. Grant Caldwell;Stephen C. Bannister

  • Hydraulic Properties of a Desert Soil Chronosequence in the Mojave Desert, USA

    Michael H Young;E. V. Mcdonald;Todd Caldwell;S. G. Benner

  • Estimating Surface Soil Moisture from SMAP Observations Using a Neural Network Technique

    J. Kolassa;J. Kolassa;R.H. Reichle;Q. Liu;S.H. Alemohammad

  • Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand

    E. A. Bertrand;T. G. Caldwell;G. J. Hill;E. L. Wallin;E. L. Wallin

  • Three-dimensional electrical resistivity image of magma beneath an active continental rift, Taupo Volcanic Zone, New Zealand

    Wiebke Heise;Wiebke Heise;T. Grant Caldwell;Hugh M. Bibby;Stewart L. Bennie

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

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

  • The effects of wildfire, salvage logging, and post-fire N-fixation on the nutrient budgets of a Sierran forest.

    D.W. Johnson;J.F. Murphy;R.B. Susfalk;T.G. Caldwell

  • A vadose zone water fluxmeter with divergence control

    Glendon W. Gee;Anderson L. Ward;Todd G. Caldwell;Jason C. Ritter

Frequent Co-Authors

Michael H. Cosh
Michael H. Cosh Agricultural Research Service
Aaron A. Berg
Aaron A. Berg University of Guelph
Jeffrey P. Walker
Jeffrey P. Walker Monash University
Andreas Colliander
Andreas Colliander California Institute of Technology
David D. Bosch
David D. Bosch Agricultural Research Service
Michael H. Young
Michael H. Young The University of Texas at Austin
Thomas J. Jackson
Thomas J. Jackson Agricultural Research Service
José Martínez-Fernández
José Martínez-Fernández University of Salamanca
Rajat Bindlish
Rajat Bindlish Goddard Space Flight Center
Peggy E. O'Neill
Peggy E. O'Neill Goddard Space Flight Center

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Combining these pathways with environmental sciences education enhances career flexibility and impact.

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