World's Best Scientists 2026 revealed!
Chad R. Hammerschmidt

Chad R. Hammerschmidt

D-Index & Metrics

Environmental Sciences

D-Index
47
Citations
9496
World Ranking
5727
National Ranking
2083

Chad R. Hammerschmidt 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 Chad R. Hammerschmidt 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: 282 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: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 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 681–689 publications: 4 scientists 690+ publications: 100 scientists
41 publications 690+

This scientist: 101 publications — 14th percentile

14% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

Chad R. Hammerschmidt 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 Chad R. Hammerschmidt 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: 198 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: 20 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: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 47 D-Index — 42nd percentile

42% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

Overview

Chad R. Hammerschmidt is affiliated with Wright State University in the United States. Their research is situated primarily within the field of Environmental Science, with a focus on several subfields including Health, Toxicology and Mutagenesis, Ecology, Environmental Chemistry, Pollution, and Geology.

The scientist's work covers a range of main topics, including:

  • Mercury impact and mitigation studies
  • Toxic Organic Pollutants Impact
  • Heavy metals in environment
  • Marine animal studies overview
  • Heavy Metal Exposure and Toxicity
  • Geological Studies and Exploration
  • Methane Hydrates and Related Phenomena

Chad R. Hammerschmidt has published several recent papers demonstrating their involvement in environmental and chemical oceanographic research. Notable publications include:

  • "The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean," 2020, Journal of Geophysical Research Oceans
  • "Mercury biogeochemical cycling: A synthesis of recent scientific advances," 2020, The Science of The Total Environment
  • "The Effect of Particle Composition and Concentration on the Partitioning Coefficient for Mercury in Three Ocean Basins," 2021, Frontiers in Environmental Chemistry
  • "Mercury methylation linked to nitrification in the tropical North Atlantic Ocean," 2022, Marine Chemistry
  • "Linked mercury methylation and nitrification across oxic subpolar regions," 2023, Frontiers in Environmental Chemistry

The scientist frequently collaborates with other researchers, with notable co-authors including:

  • Carl H. Lamborg
  • Silvia E. Newell
  • Yang Xiang
  • Phoebe J. Lam
  • Lindsay D. Starr

Chad R. Hammerschmidt often publishes in specific academic venues, contributing multiple works to:

  • Journal of Geophysical Research Oceans
  • Frontiers in Environmental Chemistry
  • Environmental Toxicology and Chemistry
  • The Science of The Total Environment
  • Marine Chemistry

Best Publications

  • Marine biogeochemical cycling of mercury.

    William F. Fitzgerald;Carl H. Lamborg;Chad R. Hammerschmidt

  • Mercury biogeochemical cycling in the ocean and policy implications.

    Robert P. Mason;Anna L. Choi;William F. Fitzgerald;Chad R. Hammerschmidt

  • A global ocean inventory of anthropogenic mercury based on water column measurements

    Carl H. Lamborg;Chad R. Hammerschmidt;Katlin L. Bowman;Gretchen J. Swarr

  • Geochemical Controls on the Production and Distribution of Methylmercury in Near-Shore Marine Sediments

    Chad R. Hammerschmidt;William F. Fitzgerald

  • The GEOTRACES Intermediate Data Product 2017

    Reiner Schlitzer;Robert F. Anderson;Elena Masferrer Dodas;Maeve Lohan

  • Modern and historic atmospheric mercury fluxes in northern Alaska: Global sources and Arctic depletion

    William F Fitzgerald;Daniel R Engstrom;Carl H Lamborg;Chun-Mao Tseng

  • Effects of Dietary Methylmercury on Reproduction of Fathead Minnows

    Chad R. Hammerschmidt;Mark B. Sandheinrich;James G. Wiener;Ronald G. Rada

  • Methylmercury in freshwater fish linked to atmospheric mercury deposition.

    Chad R. Hammerschmidt;William F. Fitzgerald

  • Bioaccumulation and Trophic Transfer of Methylmercury in Long Island Sound

    Chad R. Hammerschmidt;Chad R. Hammerschmidt;William F. Fitzgerald

  • Biogeochemistry of methylmercury in sediments of Long Island Sound

    Chad R. Hammerschmidt;William F. Fitzgerald;Carl H. Lamborg;Prentiss H. Balcom

  • Methylmercury cycling in sediments on the continental shelf of southern New England

    Chad R. Hammerschmidt;William F. Fitzgerald

  • Toxicity of dietary methylmercury to fish: derivation of ecologically meaningful threshold concentrations.

    David C. Depew;Niladri Basu;Neil M. Burgess;Linda M. Campbell

  • Mercury in the North Atlantic Ocean: The U.S. GEOTRACES zonal and meridional sections

    Katlin L. Bowman;Chad R. Hammerschmidt;Carl H. Lamborg;Gretchen Swarr

  • Photodecomposition of Methylmercury in an Arctic Alaskan Lake

    Chad R. Hammerschmidt;William F. Fitzgerald

  • Determination of the mercury complexation characteristics of dissolved organic matter in natural waters with "reducible Hg" titrations.

    Carl H. Lamborg;Chun-Mao Tseng;William F. Fitzgerald;Prentiss H. Balcom

  • Biogeochemical cycling of methylmercury in lakes and tundra watersheds of Arctic Alaska.

    Chad R. Hammerschmidt;William F. Fitzgerald;Carl H. Lamborg;Prentiss H. Balcom

  • Methylmercury in Mosquitoes Related to Atmospheric Mercury Deposition and Contamination

    Chad R. Hammerschmidt;William F. Fitzgerald

  • Mercury sources and cycling in the Connecticut River and Long Island Sound

    Prentiss H. Balcom;William F. Fitzgerald;Grace M. Vandal;Carl H. Lamborg

  • Organic matter and sulfide inhibit methylmercury production in sediments of New York/New Jersey Harbor

    Chad R. Hammerschmidt;Chad R. Hammerschmidt;William F. Fitzgerald;Prentiss H. Balcom;Pieter T. Visscher

  • The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean

    Matthew A. Charette;Lauren E. Kipp;Lauren E. Kipp;Laramie T. Jensen;Jessica S. Dabrowski

  • Seasonal distributions and cycling of mercury and methylmercury in the waters of New York/New Jersey Harbor Estuary

    Prentiss H. Balcom;Chad R. Hammerschmidt;Chad R. Hammerschmidt;William F. Fitzgerald;Carl H. Lamborg

Frequent Co-Authors

Carl H. Lamborg
Carl H. Lamborg University of California, Santa Cruz
William F. Fitzgerald
William F. Fitzgerald University of Connecticut
G. Allen Burton
G. Allen Burton University of Michigan–Ann Arbor
Robert P. Mason
Robert P. Mason University of Connecticut
Jessica N. Fitzsimmons
Jessica N. Fitzsimmons Texas A&M University
Chun-Mao Tseng
Chun-Mao Tseng National Taiwan University
Phoebe J. Lam
Phoebe J. Lam University of California, Santa Cruz
William M. Landing
William M. Landing Florida State University
Mak A. Saito
Mak A. Saito Woods Hole Oceanographic Institution
Celia Y. Chen
Celia Y. Chen Dartmouth College

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