Citation Rankings
Highly Cited Researchers
Engineering & Technology / Environmental Science & Engineering Highly Cited Researchers 36 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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
Climate Change
Atmospheric Dynamics
Stratosphere
Paleoclimate
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,755
9,443
0.172
* Total Citation Counts Rankings
Ranking Based On Selection: 2
climate change
global sea ice
satellite remote sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,231
13,494
0.298
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Radiative Transfer
Atmospheric Radiation
Remote Sensing
Climate Change
Climate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,423
8,183
0.184
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Climate Change
Paleoclimate
climate modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,826
10,834
0.351
* Total Citation Counts Rankings
Ranking Based On Selection: 5
remote sensing
climate and air quality
wildfire
volcano
pollution plumes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,908
11,222
0.388
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Climate
Climate Change
Climate Modeling
Atmospheric Dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,900
5,092
0.204
* Total Citation Counts Rankings
Ranking Based On Selection: 7
sea ice
climate change
gsfc-cryo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,523
5,233
0.213
* Total Citation Counts Rankings
Ranking Based On Selection: 8
remote sensing
snow hydrology
climate change
land use change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,393
9,249
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Atmospheric radiation
Remote sensing
Aerosols
Climate Change
Lidar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,576
2,311
0.139
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Remote sensing
polarization
radiative transfer theory
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,695
5,429
0.369
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Environmental Science
Agriculture
Food
Climate Change
Land Use
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,942
6,101
0.511
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Air pollution
Satellite remote sensing
Emission inventory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,540
8,912
0.846
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,472
2,993
0.401
* Total Citation Counts Rankings
Ranking Based On Selection: 14
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,524
1,047
0.160
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,342
1,061
0.199
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Climate change
remote sensing of clouds
satellite retrievals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,291
2,782
0.526
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Air quality
pollution
atmospheric aerosols
satellite remote sensing
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,300
2,215
0.515
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Climate Change
Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,838
3,261
0.850
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Climate change
Radiative transfer
Remote sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,203
1,008
0.315
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Atmospheric Aerosols
Satellite Remote Sensing
Atmospheric Science
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,147
1,835
0.583
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Radiative Transfer
Aerosol Remote Sensing
Air Pollution
Cloud-Aerosol Interactions
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,979
1,903
0.639
* Total Citation Counts Rankings
Ranking Based On Selection: 22
systems engineering
sea level rise
climate change & risk management
robotics
spacecraft design
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,896
1,354
0.468
* Total Citation Counts Rankings
Ranking Based On Selection: 23
remote sensing
LiDAR
Environmental science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,766
2,133
0.771
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Land Remote Sensing
Climate Change
Long Term Climate Variability
Land Atmosphere Interaction
Effect of Land Cover Change on
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,180
1,285
0.589
* Total Citation Counts Rankings
Ranking Based On Selection: 25
climate change
arctic
tribal
native
oil spills
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,107
561
0.266
* Total Citation Counts Rankings
Rankings
8,901
4,244
11
Ranking Based On Selection: 1
David Rind
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,755
9,443
0.172
Climate Change
Atmospheric Dynamics
Stratosphere
Paleoclimate
Hydrology
* Total Citation Counts Rankings
Rankings
11,999
5,689
14
Ranking Based On Selection: 2
Josefino Comiso
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,231
13,494
0.298
climate change
global sea ice
satellite remote sensing
* Total Citation Counts Rankings
Rankings
12,378
5,853
16
Ranking Based On Selection: 3
Andrew A Lacis
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,423
8,183
0.184
Radiative Transfer
Atmospheric Radiation
Remote Sensing
Climate Change
Climate
* Total Citation Counts Rankings
Rankings
22,004
10,143
36
Ranking Based On Selection: 4
Gavin Schmidt
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,826
10,834
0.351
Climate Change
Paleoclimate
climate modeling
* Total Citation Counts Rankings
Rankings
24,351
11,181
41
Ranking Based On Selection: 5
Ralph Kahn
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,908
11,222
0.388
remote sensing
climate and air quality
wildfire
volcano
pollution plumes
* Total Citation Counts Rankings
Rankings
30,463
13,819
63
Ranking Based On Selection: 6
Gary L Russell
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,900
5,092
0.204
Climate
Climate Change
Climate Modeling
Atmospheric Dynamics
* Total Citation Counts Rankings
Rankings
31,143
14,093
64
Ranking Based On Selection: 7
Claire Parkinson
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,523
5,233
0.213
sea ice
climate change
gsfc-cryo
* Total Citation Counts Rankings
Rankings
40,407
17,853
86
Ranking Based On Selection: 8
Thomas Painter
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,393
9,249
0.454
remote sensing
snow hydrology
climate change
land use change
* Total Citation Counts Rankings
Rankings
53,509
22,977
117
Ranking Based On Selection: 9
Philip B Russell
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,576
2,311
0.139
Atmospheric radiation
Remote sensing
Aerosols
Climate Change
Lidar
* Total Citation Counts Rankings
Rankings
62,765
26,493
136
Ranking Based On Selection: 10
Brian Cairns
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,695
5,429
0.369
Remote sensing
polarization
radiative transfer theory
climate change
* Total Citation Counts Rankings
Rankings
81,525
33,320
189
Ranking Based On Selection: 11
Emily Cassidy
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,942
6,101
0.511
Environmental Science
Agriculture
Food
Climate Change
Land Use
* Total Citation Counts Rankings
Rankings
94,598
37,924
228
Ranking Based On Selection: 12
Fei Liu
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,540
8,912
0.846
Air pollution
Satellite remote sensing
Emission inventory
* Total Citation Counts Rankings
Rankings
139,282
52,921
329
Ranking Based On Selection: 13
George Tselioudis
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,472
2,993
0.401
* Total Citation Counts Rankings
Rankings
160,496
59,705
367
Ranking Based On Selection: 14
Alexander Ruzmaikin
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,524
1,047
0.160
* Total Citation Counts Rankings
Rankings
195,909
70,566
427
Ranking Based On Selection: 15
Robert L Herman
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,342
1,061
0.199
Environmental Science
* Total Citation Counts Rankings
Rankings
197,683
71,103
431
Ranking Based On Selection: 16
Mark Richardson
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,291
2,782
0.526
Climate change
remote sensing of clouds
satellite retrievals
* Total Citation Counts Rankings
Rankings
240,645
83,816
509
Ranking Based On Selection: 17
Pawan Gupta
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,300
2,215
0.515
Air quality
pollution
atmospheric aerosols
satellite remote sensing
climate change
* Total Citation Counts Rankings
Rankings
266,619
91,368
556
Ranking Based On Selection: 18
Kate Marvel
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,838
3,261
0.850
Climate Change
Energy
* Total Citation Counts Rankings
Rankings
311,283
104,206
628
Ranking Based On Selection: 19
Zhonghai Jin
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,203
1,008
0.315
Climate change
Radiative transfer
Remote sensing
* Total Citation Counts Rankings
Rankings
315,828
105,405
634
Ranking Based On Selection: 20
Falguni Patadia
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,147
1,835
0.583
Atmospheric Aerosols
Satellite Remote Sensing
Atmospheric Science
Climate Change
* Total Citation Counts Rankings
Rankings
330,469
109,583
662
Ranking Based On Selection: 21
Hiren Jethva
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,979
1,903
0.639
Radiative Transfer
Aerosol Remote Sensing
Air Pollution
Cloud-Aerosol Interactions
Climate Change
* Total Citation Counts Rankings
Rankings
338,035
111,707
676
Ranking Based On Selection: 22
Daniel Limonadi
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,896
1,354
0.468
systems engineering
sea level rise
climate change & risk management
robotics
spacecraft design
* Total Citation Counts Rankings
Rankings
350,888
115,231
687
Ranking Based On Selection: 23
Antonio Ferraz
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,766
2,133
0.771
remote sensing
LiDAR
Environmental science
* Total Citation Counts Rankings
Rankings
420,819
134,377
778
Ranking Based On Selection: 24
Sudipta Sarkar
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,180
1,285
0.589
Land Remote Sensing
Climate Change
Long Term Climate Variability
Land Atmosphere Interaction
Effect of Land Cover Change on
* Total Citation Counts Rankings
Rankings
431,544
137,326
795
Ranking Based On Selection: 25
Nancy G Maynard
NASA Ames Research Center
California, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,107
561
0.266
climate change
arctic
tribal
native
oil spills