The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Atmospheric Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,083
3,740
0.138
* Total Citation Counts Rankings
Ranking Based On Selection :2
chemistry
physics
astrochemistry
theoretical chemistry
spectroscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,793
7,610
0.320
* Total Citation Counts Rankings
Ranking Based On Selection :3
atmospheric chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,735
4,509
0.228
* Total Citation Counts Rankings
Ranking Based On Selection :4
chemistry-climate interactions
trends in atmospheric pollutants
atmospheric chemistry modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,532
5,625
0.534
* Total Citation Counts Rankings
Ranking Based On Selection :5
Astrochemistry
Chemistry
Astrobiology
Planetary Science
Radiation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,085
2,486
0.274
* Total Citation Counts Rankings
Ranking Based On Selection :6
High temperature chemistry
chemical thermodynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,082
3,368
0.371
* Total Citation Counts Rankings
Ranking Based On Selection :7
Chemistry-Climate Modeling
Ozone
Stratospheric Chemistry
Volcanic Eruptions and Climate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,942
5,045
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :8
Ammonia
Air Quality
Tropospheric Chemistry
Chemical Ionization Mass Spectrometry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,326
3,888
0.467
* Total Citation Counts Rankings
Ranking Based On Selection :9
Astrobiology
Planetary Science
Analytical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,145
2,471
0.303
* Total Citation Counts Rankings
Ranking Based On Selection :10
Atmospheric Chemistry
Satellite Remote Sensing of Trace Gases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,726
1,731
0.224
* Total Citation Counts Rankings
Ranking Based On Selection :11
Atmospheric Chemistry
Air Pollution
Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,527
4,878
0.648
* Total Citation Counts Rankings
Ranking Based On Selection :12
Aerosol remote sensing
In-situ aerosol measurements
Tropopause chemistry & dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,342
2,770
0.638
* Total Citation Counts Rankings
Ranking Based On Selection :13
planetary science
physical chemistry
physical properties of ices
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,570
2,076
0.582
* Total Citation Counts Rankings
Ranking Based On Selection :14
Atmospheric chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,377
2,484
0.736
* Total Citation Counts Rankings
Ranking Based On Selection :15
Atmospheric Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,331
1,880
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :16
Astrochemistry
Organic Chemistry
Natural Products
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,491
1,786
0.717
* Total Citation Counts Rankings
Ranking Based On Selection :17
Environmental chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,374
489
0.206
* Total Citation Counts Rankings
Ranking Based On Selection :18
Chemical Physics
Theoretical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,322
1,252
0.539
* Total Citation Counts Rankings
Ranking Based On Selection :19
Chemistry in the Solar System and planet-forming regions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,995
1,179
0.591
* Total Citation Counts Rankings
Ranking Based On Selection :20
Laser ablation
LIBS
Plasma Physics
Analytical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,503
645
0.429
* Total Citation Counts Rankings
Ranking Based On Selection :21
surface engineering
thermal materials
bonding
structural composites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,448
679
0.469
* Total Citation Counts Rankings
Ranking Based On Selection :22
chemistry
atmospheric sciences
quantum chemistry
astrochemistry
astrobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,375
839
0.610
* Total Citation Counts Rankings
Ranking Based On Selection :23
Atmospheric chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,156
751
0.650
* Total Citation Counts Rankings
Ranking Based On Selection :24
Atmospheric Chemistry
In-situ measurements
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,036
957
0.924
* Total Citation Counts Rankings
Ranking Based On Selection :25
Chemistry
Physics
Spectroscopy
Plasmonics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,027
917
0.893
Hanwant Singh
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,083
3,740
0.138
Timothy J Lee
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,793
7,610
0.320
chemistry
physics
astrochemistry
theoretical chemistry
spectroscopy
Stanley P Sander
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,735
4,509
0.228
Sarah Strode
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,532
5,625
0.534
chemistry-climate interactions
trends in atmospheric pollutants
atmospheric chemistry modeling
Perry Gerakines
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,085
2,486
0.274
Astrochemistry
Chemistry
Astrobiology
Planetary Science
Radiation
Nathan Jacobson
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,082
3,368
0.371
High temperature chemistry
chemical thermodynamics
Luke D Oman
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,942
5,045
0.564
Chemistry-Climate Modeling
Ozone
Stratospheric Chemistry
Volcanic Eruptions and Climate
John B Nowak
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,326
3,888
0.467
Ammonia
Air Quality
Tropospheric Chemistry
Chemical Ionization Mass Spectrometry
Peter A Willis
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,145
2,471
0.303
Astrobiology
Planetary Science
Analytical Chemistry
James Gleason
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,726
1,731
0.224
Atmospheric Chemistry
Satellite Remote Sensing of Trace Gases
Can Li
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,527
4,878
0.648
Atmospheric Chemistry
Air Pollution
Remote Sensing
Leigh Munchak
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,342
2,770
0.638
Aerosol remote sensing
In-situ aerosol measurements
Tropopause chemistry & dynamics
Mathieu Choukroun
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,570
2,076
0.582
planetary science
physical chemistry
physical properties of ices
Katherine Travis
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,377
2,484
0.736
Jin Liao
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,331
1,880
0.564
José Carlos Aponte
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,491
1,786
0.717
Astrochemistry
Organic Chemistry
Natural Products
William T Wallace
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,374
489
0.206
E Papajak
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,322
1,252
0.539
Chemical Physics
Theoretical Chemistry
Edith Fayolle
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,995
1,179
0.591
Chemistry in the Solar System and planet-forming regions
Alexander A Bol'Shakov
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,503
645
0.429
Laser ablation
LIBS
Plasma Physics
Analytical Chemistry
Frank L Palmieri
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,448
679
0.469
surface engineering
thermal materials
bonding
structural composites
Partha P Bera
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,375
839
0.610
chemistry
atmospheric sciences
quantum chemistry
astrochemistry
astrobiology
Travis N Knepp
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,156
751
0.650
Hannah S Halliday
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,036
957
0.924
Atmospheric Chemistry
In-situ measurements
Nicholas Tallarida
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,027
917
0.893
Chemistry
Physics
Spectroscopy
Plasmonics