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H-Index
Rankings

United States 3,199 Scientists H-Index Engineering & Technology / Environmental Science & Engineering Rankings - 2026

Track the real-time academic impact of 2.6 million scientists across 221 countries. The H-Index Rankings evaluate both total and last 5 years’ H-index values, offering the most transparent measure of scholarly recognition. Compare global, continental, national, and institutional performance across 13 major fields and 221 disciplines.

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Total 3.199 scientist , Updates every 3 days
* Total H Index Rankings

Rankings

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496
World Rank
United States
166
Country Rank
Rice University Logo
3
University
Ranking Based On Selection:
1
Menachem Elimelech
Rice University Houston, United States
Engineering & Technology / Environmental Science & Engineering
environmental engineering | membrane separations | environmental nanotechnology | desalination | wate

H-Index Metrics

  • Total
    219
  • Last 5 Years
    144
  • Last 5 Years / Total
    0.658
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* Total H Index Rankings

Rankings

flag
1,039
World Rank
United States
389
Country Rank
Stanford University Logo
13
University
Ranking Based On Selection:
2
Robert B Jackson
Stanford University Stanford, United States
Engineering & Technology / Environmental Science & Engineering
biogeochemistry | ecology | environmental science | climate change | ecohydrolog

H-Index Metrics

  • Total
    181
  • Last 5 Years
    133
  • Last 5 Years / Total
    0.735
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* Total H Index Rankings

Rankings

flag
1,196
World Rank
United States
464
Country Rank
Pennsylvania State University Logo
1
University
Ranking Based On Selection:
3
Bruce E Logan
Pennsylvania State University University Park, United States
Engineering & Technology / Environmental Science & Engineering
Microbial fuel cells | microbial electrolysis cells | thermal batteries | desalination | water electrolyzer

H-Index Metrics

  • Total
    174
  • Last 5 Years
    101
  • Last 5 Years / Total
    0.580
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* Total H Index Rankings

Rankings

flag
1,303
World Rank
United States
511
Country Rank
Stanford University Logo
20
University
Ranking Based On Selection:
4
Christopher B Field
Stanford University Stanford, United States
Engineering & Technology / Environmental Science & Engineering
climate change | ecology | carbon cycle | leaf nitroge

H-Index Metrics

  • Total
    170
  • Last 5 Years
    103
  • Last 5 Years / Total
    0.606
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* Total H Index Rankings

Rankings

flag
1,447
World Rank
United States
582
Country Rank
University of Massachusetts Amherst Logo
6
University
Ranking Based On Selection:
5
Baoshan Xing
University of Massachusetts Amherst Amherst, United States
Engineering & Technology / Environmental Science & Engineering
Environmental & soil chemistry | adsorption | nanoparticles | microplastics | food safet

H-Index Metrics

  • Total
    165
  • Last 5 Years
    124
  • Last 5 Years / Total
    0.752
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* Total H Index Rankings

Rankings

flag
2,504
World Rank
United States
1,067
Country Rank
University of California Davis Logo
8
University
Ranking Based On Selection:
6
John C Wingfield
University of California Davis Davis, United States
Engineering & Technology / Environmental Science & Engineering
Environmental endocrinolog

H-Index Metrics

  • Total
    145
  • Last 5 Years
    60
  • Last 5 Years / Total
    0.414
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* Total H Index Rankings

Rankings

flag
3,253
World Rank
United States
1,421
Country Rank
California Institute of Technology Caltech Logo
16
University
Ranking Based On Selection:
7
Michael R Hoffmann
California Institute of Technology Caltech Pasadena, United States
Engineering & Technology / Environmental Science & Engineering
environmental chemistry | atmospheric chemistry | environmental engineerin

H-Index Metrics

  • Total
    136
  • Last 5 Years
    71
  • Last 5 Years / Total
    0.522
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* Total H Index Rankings

Rankings

flag
3,335
World Rank
United States
1,453
Country Rank
University of Virginia Logo
7
University
Ranking Based On Selection:
8
Scott Doney
University of Virginia Charlottesville, United States
Engineering & Technology / Environmental Science & Engineering
Oceanography | Biogeochemistry | Marine Ecosystems | Climate | Carbon Cycl

H-Index Metrics

  • Total
    135
  • Last 5 Years
    87
  • Last 5 Years / Total
    0.644
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* Total H Index Rankings

Rankings

flag
3,939
World Rank
United States
1,745
Country Rank
University of Florida Logo
14
University
Ranking Based On Selection:
9
Bin Gao
University of Florida Gainesville, United States
Engineering & Technology / Environmental Science & Engineering
Environmental Science & Engineering | Contaminant Hydrology | Environmental Nanotechnology | Biocha

H-Index Metrics

  • Total
    129
  • Last 5 Years
    120
  • Last 5 Years / Total
    0.930
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* Total H Index Rankings

Rankings

flag
3,968
World Rank
United States
1,758
Country Rank
University of California Los Angeles Logo
39
University
Ranking Based On Selection:
10
Michael Jerrett
University of California Los Angeles Los Angeles, United States
Engineering & Technology / Environmental Science & Engineering
air pollution | exposure | built environment | health effects | GI

H-Index Metrics

  • Total
    129
  • Last 5 Years
    89
  • Last 5 Years / Total
    0.690
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* Total H Index Rankings

Rankings

flag
3,974
World Rank
United States
1,763
Country Rank
Duke University Logo
27
University
Ranking Based On Selection:
11
Drew Shindell
Duke University Durham, United States
Engineering & Technology / Environmental Science & Engineering
Climate change | atmospheric chemistry | climate polic

H-Index Metrics

  • Total
    129
  • Last 5 Years
    86
  • Last 5 Years / Total
    0.667
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* Total H Index Rankings

Rankings

flag
3,981
World Rank
United States
1,765
Country Rank
Stanford University Logo
80
University
Ranking Based On Selection:
12
Gretchen C Daily
Stanford University Stanford, United States
Engineering & Technology / Environmental Science & Engineering
conservation science | ecosystem services | environmental science | sustainable agriculture | sustainable developmen

H-Index Metrics

  • Total
    129
  • Last 5 Years
    83
  • Last 5 Years / Total
    0.643
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* Total H Index Rankings

Rankings

flag
4,320
World Rank
United States
1,917
Country Rank
University of Texas El Paso Logo
2
University
Ranking Based On Selection:
13
Jorge Gardea Torresdey
University of Texas El Paso El Paso, United States
Engineering & Technology / Environmental Science & Engineering
Environmental Nanotechnology | Environmental Science & Engineering | Nanotoxicology | Environmental Chemistry | Phytoremediatio

H-Index Metrics

  • Total
    126
  • Last 5 Years
    93
  • Last 5 Years / Total
    0.738
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* Total H Index Rankings

Rankings

flag
4,470
World Rank
United States
1,978
Country Rank
Rice University Logo
13
University
Ranking Based On Selection:
14
Pedro Jj Alvarez
Rice University Houston, United States
Engineering & Technology / Environmental Science & Engineering
environmental engineering | environmental nanotechnology | water treatment | biodegradatio

H-Index Metrics

  • Total
    125
  • Last 5 Years
    88
  • Last 5 Years / Total
    0.704
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* Total H Index Rankings

Rankings

flag
4,529
World Rank
United States
2,008
Country Rank
University of Maryland Center for Environmental Science Logo
1
University
Ranking Based On Selection:
15
Eric A Davidson
University of Maryland Center for Environmental Science Cambridge, United States
Engineering & Technology / Environmental Science & Engineering
biogeochemistry | nutrient cycling | trace gas emissions | land use change | climate change feedback

H-Index Metrics

  • Total
    125
  • Last 5 Years
    72
  • Last 5 Years / Total
    0.576
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* Total H Index Rankings

Rankings

flag
4,703
World Rank
United States
2,088
Country Rank
Arizona State University Logo
10
University
Ranking Based On Selection:
16
Bruce E Rittmann
Arizona State University Tempe, United States
Engineering & Technology / Environmental Science & Engineering
Environmental Biotechnology | Environmental Engineering | Biogeochemistry | Resource Recover

H-Index Metrics

  • Total
    124
  • Last 5 Years
    70
  • Last 5 Years / Total
    0.565
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* Total H Index Rankings

Rankings

flag
4,800
World Rank
United States
2,137
Country Rank
Harvard University Logo
197
University
Ranking Based On Selection:
17
Antonella Zanobetti
Harvard University Cambridge, United States
Engineering & Technology / Environmental Science & Engineering
Environmental Health | Air pollution | Epidemiolog

H-Index Metrics

  • Total
    123
  • Last 5 Years
    89
  • Last 5 Years / Total
    0.724
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* Total H Index Rankings

Rankings

flag
5,085
World Rank
United States
2,263
Country Rank
Arizona State University Logo
12
University
Ranking Based On Selection:
18
Paul Westerhoff
Arizona State University Tempe, United States
Engineering & Technology / Environmental Science & Engineering
water treatment | environmental nanotechnolog

H-Index Metrics

  • Total
    121
  • Last 5 Years
    83
  • Last 5 Years / Total
    0.686
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* Total H Index Rankings

Rankings

flag
5,194
World Rank
United States
2,315
Country Rank
Syracuse University Logo
7
University
Ranking Based On Selection:
19
Charles T Driscoll
Syracuse University Syracuse, United States
Engineering & Technology / Environmental Science & Engineering
environmental engineering | environmental science | biogeochemistry | air pollution effects | human disturbance of ecosystem

H-Index Metrics

  • Total
    121
  • Last 5 Years
    55
  • Last 5 Years / Total
    0.455
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* Total H Index Rankings

Rankings

flag
5,364
World Rank
United States
2,386
Country Rank
Desert Research Institute, Reno Logo
1
University
Ranking Based On Selection:
20
John G Watson
Desert Research Institute, Reno Reno, United States
Engineering & Technology / Environmental Science & Engineering
Environmental Science | Air Pollution | Aeroso

H-Index Metrics

  • Total
    120
  • Last 5 Years
    61
  • Last 5 Years / Total
    0.508
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* Total H Index Rankings

Rankings

flag
5,445
World Rank
United States
2,410
Country Rank
Case Western Reserve University Logo
4
University
Ranking Based On Selection:
21
Sanjay Rajagopalan
Case Western Reserve University Cleveland, United States
Engineering & Technology / Environmental Science & Engineering
Environment | Pollution | Cardiometabolic | Planetary Healt

H-Index Metrics

  • Total
    119
  • Last 5 Years
    82
  • Last 5 Years / Total
    0.689
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* Total H Index Rankings

Rankings

flag
5,929
World Rank
United States
2,627
Country Rank
University of Washington Logo
21
University
Ranking Based On Selection:
22
David A Stahl
University of Washington Seattle, United States
Engineering & Technology / Environmental Science & Engineering
Microbiology | Ecology | Evolutio

H-Index Metrics

  • Total
    117
  • Last 5 Years
    62
  • Last 5 Years / Total
    0.530
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* Total H Index Rankings

Rankings

flag
6,773
World Rank
United States
2,996
Country Rank
University of Virginia Logo
15
University
Ranking Based On Selection:
23
James N Galloway
University of Virginia Charlottesville, United States
Engineering & Technology / Environmental Science & Engineering

H-Index Metrics

  • Total
    113
  • Last 5 Years
    60
  • Last 5 Years / Total
    0.531
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* Total H Index Rankings

Rankings

flag
6,783
World Rank
United States
3,002
Country Rank
Princeton University Logo
42
University
Ranking Based On Selection:
24
Ignacio Rodriguez Iturbe
Princeton University Princeton, United States
Engineering & Technology / Environmental Science & Engineering
hydrology | ecohydrology | statistics | water resources | ecolog

H-Index Metrics

  • Total
    113
  • Last 5 Years
    58
  • Last 5 Years / Total
    0.513
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* Total H Index Rankings

Rankings

flag
7,312
World Rank
United States
3,241
Country Rank
Stanford University Logo
152
University
Ranking Based On Selection:
25
Perry Mccarty
Stanford University Stanford, United States
Engineering & Technology / Environmental Science & Engineering
environmental engineering and scienc

H-Index Metrics

  • Total
    111
  • Last 5 Years
    38
  • Last 5 Years / Total
    0.342
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