World

H-Index
Rankings

NASA Ames Research Center Scientists Rankings 2025

The "AD Scientific Index" analyses the academic work of scientists using the H-index, i10 index and number of citations, and provides results that can be used to evaluate the productivity and efficiency of individuals and institutions. In addition to ranking according to "total H-index" for individuals and institutions, you can also see the ranking and analyses according to "last 6 years H-index"and Subject Rankings.

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Total 1.536 scientist
* Total H Index Rankings
World Rank
35,771
Country Rank
14,894
Institution Rank :76
United States
Marco Velli
Marco Velli
NASA Ames Research Center
California , United States
Engineering & Technology / Earth Sciences
Plasma astrophysics
magnetic fields
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
48
0.727
See All Rankings and Analysis
* Total H Index Rankings
World Rank
36,136
Country Rank
15,021
Institution Rank :77
United States
Yongxiang Hu
Yongxiang Hu
NASA Ames Research Center
California , United States
Engineering & Technology / Marine Sciences and Engineering
Radiative transfer
lidar
clouds
multiple scattering
ocean lidar
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
42
0.636
See All Rankings and Analysis
* Total H Index Rankings
World Rank
36,521
Country Rank
15,173
Institution Rank :78
United States
Spiro K Antiochos
Spiro K Antiochos
NASA Ames Research Center
California , United States
Natural Sciences / Physics
Space Physics
Astrophysics
Plasma Physics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
37
0.561
See All Rankings and Analysis
* Total H Index Rankings
World Rank
36,676
Country Rank
15,229
Institution Rank :79
United States
Sangeeta Malhotra
Sangeeta Malhotra
NASA Ames Research Center
California , United States
Natural Sciences / Physics
Astrophysics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
34
0.515
See All Rankings and Analysis
* Total H Index Rankings
World Rank
37,088
Country Rank
15,401
Institution Rank :80
United States
Joanna Joiner
Joanna Joiner
NASA Ames Research Center
California , United States
Others
remote sensing
clouds
trace-gases
fluorescence
vegetation
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
56
0.862
See All Rankings and Analysis
* Total H Index Rankings
World Rank
37,648
Country Rank
15,573
Institution Rank :81
United States
John Worden
John Worden
NASA Ames Research Center
California , United States
Engineering & Technology / Earth Sciences
Earth System Science
remote sensing
water and carbon cycles
atmospheric chemistry
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
44
0.677
See All Rankings and Analysis
* Total H Index Rankings
World Rank
38,671
Country Rank
15,990
Institution Rank :82
United States
Tr Gull
Tr Gull
NASA Ames Research Center
California , United States
Natural Sciences / Physics
astrophysics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
24
0.369
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,194
Country Rank
16,150
Institution Rank :83
United States
Thomas Painter
Thomas Painter
NASA Ames Research Center
California , United States
Engineering & Technology / Environmental Science & Engineering
remote sensing
snow hydrology
climate change
land use change
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
48
0.750
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,198
Country Rank
16,154
Institution Rank :84
United States
Christopher J Burke
Christopher J Burke
NASA Ames Research Center
California , United States
Natural Sciences / Physics
Astrophysics
Exoplanets
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
48
0.750
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,234
Country Rank
16,166
Institution Rank :85
United States
Christa Peters-Lidard
Christa Peters-Lidard
NASA Ames Research Center
California , United States
Engineering & Technology / Meteorology & Atmospheric Sciences
Hydrology
Hydrometeorology
Hydroclimatology
Remote Sensing
Land Surface Modeling
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
47
0.734
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,273
Country Rank
16,178
Institution Rank :86
United States
Carol A Raymond
Carol A Raymond
NASA Ames Research Center
California , United States
Others
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
46
0.719
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,280
Country Rank
16,179
Institution Rank :87
United States
Robert Green
Robert Green
NASA Ames Research Center
California , United States
Others
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
46
0.719
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,598
Country Rank
16,279
Institution Rank :88
United States
Colleen A Wilson-Hodge
Colleen A Wilson-Hodge
NASA Ames Research Center
California , United States
Others
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
42
0.656
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,707
Country Rank
16,323
Institution Rank :89
United States
J Scott Smith
J Scott Smith
NASA Ames Research Center
California , United States
Natural Sciences / Physics
optics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
40
0.625
See All Rankings and Analysis
* Total H Index Rankings
World Rank
39,785
Country Rank
16,353
Institution Rank :90
United States
Ravi Kumar Kopparapu
Ravi Kumar Kopparapu
NASA Ames Research Center
California , United States
Natural Sciences / Physics
Exoplanets
Habitability
planetary science
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
40
0.625
See All Rankings and Analysis
* Total H Index Rankings
World Rank
40,083
Country Rank
16,460
Institution Rank :91
United States
Patrick Morrissey
Patrick Morrissey
NASA Ames Research Center
California , United States
Natural Sciences / Physics
Astronomy
Instrumentation
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
36
0.563
See All Rankings and Analysis
* Total H Index Rankings
World Rank
40,140
Country Rank
16,481
Institution Rank :92
United States
Lee-Lueng Fu
Lee-Lueng Fu
NASA Ames Research Center
California , United States
Engineering & Technology / Marine Sciences and Engineering
oceanography
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
35
0.547
See All Rankings and Analysis
* Total H Index Rankings
World Rank
41,590
Country Rank
17,017
Institution Rank :93
United States
Mark Vaughan
Mark Vaughan
NASA Ames Research Center
California , United States
Others
lidar
clouds
aerosols
CALIPSO
CALIOP
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
41
0.651
See All Rankings and Analysis
* Total H Index Rankings
World Rank
41,813
Country Rank
17,103
Institution Rank :94
United States
Kasthuri Venkateswaran
Kasthuri Venkateswaran
NASA Ames Research Center
California , United States
Medical and Health Sciences / Microbiology
Microbiology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
38
0.603
See All Rankings and Analysis
* Total H Index Rankings
World Rank
42,029
Country Rank
17,194
Institution Rank :95
United States
Claire Parkinson
Claire Parkinson
NASA Ames Research Center
California , United States
Engineering & Technology / Environmental Science & Engineering
sea ice
climate change
gsfc-cryo
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
36
0.571
See All Rankings and Analysis
* Total H Index Rankings
World Rank
42,239
Country Rank
17,289
Institution Rank :96
United States
David W Mittlefehldt
David W Mittlefehldt
NASA Ames Research Center
California , United States
Engineering & Technology / Petroleum Engineering
Planetary Science
Meteoritics
Cosmochemistry
Geochemistry
Petrology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
33
0.524
See All Rankings and Analysis
* Total H Index Rankings
World Rank
42,290
Country Rank
17,309
Institution Rank :97
United States
Robert Pappalardo
Robert Pappalardo
NASA Ames Research Center
California , United States
Engineering & Technology / Meteorology & Atmospheric Sciences
Planetary Science
Icy Satellites
Europa Clipper Mission
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
32
0.508
See All Rankings and Analysis
* Total H Index Rankings
World Rank
42,306
Country Rank
17,317
Institution Rank :98
United States
Lucy Mcfadden
Lucy Mcfadden
NASA Ames Research Center
California , United States
Engineering & Technology / Meteorology & Atmospheric Sciences
planetary science
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
32
0.508
See All Rankings and Analysis
* Total H Index Rankings
World Rank
43,111
Country Rank
17,619
Institution Rank :99
United States
Glenn Diskin
Glenn Diskin
NASA Ames Research Center
California , United States
Others
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
62
47
0.758
See All Rankings and Analysis
* Total H Index Rankings
World Rank
43,230
Country Rank
17,653
Institution Rank :100
United States
Eric Switzer
Eric Switzer
NASA Ames Research Center
California , United States
Natural Sciences / Physics
cosmic background radiation
instrumentation
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
62
46
0.742
See All Rankings and Analysis
* Total H Index Rankings
Rankings
35,771
United States
14,894
76
Ranking Based On Selection: 76
Marco Velli
Marco Velli
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
48
0.727
Engineering & Technology / Earth Sciences
Plasma astrophysics
magnetic fields
See All Rankings and Analysis
* Total H Index Rankings
Rankings
36,136
United States
15,021
77
Ranking Based On Selection: 77
Yongxiang Hu
Yongxiang Hu
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
42
0.636
Engineering & Technology / Marine Sciences and Engineering
Radiative transfer
lidar
clouds
multiple scattering
ocean lidar
See All Rankings and Analysis
* Total H Index Rankings
Rankings
36,521
United States
15,173
78
Ranking Based On Selection: 78
Spiro K Antiochos
Spiro K Antiochos
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
37
0.561
Natural Sciences / Physics
Space Physics
Astrophysics
Plasma Physics
See All Rankings and Analysis
* Total H Index Rankings
Rankings
36,676
United States
15,229
79
Ranking Based On Selection: 79
Sangeeta Malhotra
Sangeeta Malhotra
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
66
34
0.515
Natural Sciences / Physics
Astrophysics
See All Rankings and Analysis
* Total H Index Rankings
Rankings
37,088
United States
15,401
80
Ranking Based On Selection: 80
Joanna Joiner
Joanna Joiner
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
56
0.862
Others
remote sensing
clouds
trace-gases
fluorescence
vegetation
See All Rankings and Analysis
* Total H Index Rankings
Rankings
37,648
United States
15,573
81
Ranking Based On Selection: 81
John Worden
John Worden
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
44
0.677
Engineering & Technology / Earth Sciences
Earth System Science
remote sensing
water and carbon cycles
atmospheric chemistry
See All Rankings and Analysis
* Total H Index Rankings
Rankings
38,671
United States
15,990
82
Ranking Based On Selection: 82
Tr Gull
Tr Gull
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
65
24
0.369
Natural Sciences / Physics
astrophysics
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,194
United States
16,150
83
Ranking Based On Selection: 83
Thomas Painter
Thomas Painter
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
48
0.750
Engineering & Technology / Environmental Science & Engineering
remote sensing
snow hydrology
climate change
land use change
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,198
United States
16,154
84
Ranking Based On Selection: 84
Christopher J Burke
Christopher J Burke
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
48
0.750
Natural Sciences / Physics
Astrophysics
Exoplanets
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,234
United States
16,166
85
Ranking Based On Selection: 85
Christa Peters-Lidard
Christa Peters-Lidard
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
47
0.734
Engineering & Technology / Meteorology & Atmospheric Sciences
Hydrology
Hydrometeorology
Hydroclimatology
Remote Sensing
Land Surface Modeling
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,273
United States
16,178
86
Ranking Based On Selection: 86
Carol A Raymond
Carol A Raymond
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
46
0.719
Others
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,280
United States
16,179
87
Ranking Based On Selection: 87
Robert Green
Robert Green
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
46
0.719
Others
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,598
United States
16,279
88
Ranking Based On Selection: 88
Colleen A Wilson-Hodge
Colleen A Wilson-Hodge
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
42
0.656
Others
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,707
United States
16,323
89
Ranking Based On Selection: 89
J Scott Smith
J Scott Smith
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
40
0.625
Natural Sciences / Physics
optics
See All Rankings and Analysis
* Total H Index Rankings
Rankings
39,785
United States
16,353
90
Ranking Based On Selection: 90
Ravi Kumar Kopparapu
Ravi Kumar Kopparapu
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
40
0.625
Natural Sciences / Physics
Exoplanets
Habitability
planetary science
See All Rankings and Analysis
* Total H Index Rankings
Rankings
40,083
United States
16,460
91
Ranking Based On Selection: 91
Patrick Morrissey
Patrick Morrissey
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
36
0.563
Natural Sciences / Physics
Astronomy
Instrumentation
See All Rankings and Analysis
* Total H Index Rankings
Rankings
40,140
United States
16,481
92
Ranking Based On Selection: 92
Lee-Lueng Fu
Lee-Lueng Fu
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
64
35
0.547
Engineering & Technology / Marine Sciences and Engineering
oceanography
See All Rankings and Analysis
* Total H Index Rankings
Rankings
41,590
United States
17,017
93
Ranking Based On Selection: 93
Mark Vaughan
Mark Vaughan
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
41
0.651
Others
lidar
clouds
aerosols
CALIPSO
CALIOP
See All Rankings and Analysis
* Total H Index Rankings
Rankings
41,813
United States
17,103
94
Ranking Based On Selection: 94
Kasthuri Venkateswaran
Kasthuri Venkateswaran
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
38
0.603
Medical and Health Sciences / Microbiology
Microbiology
See All Rankings and Analysis
* Total H Index Rankings
Rankings
42,029
United States
17,194
95
Ranking Based On Selection: 95
Claire Parkinson
Claire Parkinson
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
36
0.571
Engineering & Technology / Environmental Science & Engineering
sea ice
climate change
gsfc-cryo
See All Rankings and Analysis
* Total H Index Rankings
Rankings
42,239
United States
17,289
96
Ranking Based On Selection: 96
David W Mittlefehldt
David W Mittlefehldt
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
33
0.524
Engineering & Technology / Petroleum Engineering
Planetary Science
Meteoritics
Cosmochemistry
Geochemistry
Petrology
See All Rankings and Analysis
* Total H Index Rankings
Rankings
42,290
United States
17,309
97
Ranking Based On Selection: 97
Robert Pappalardo
Robert Pappalardo
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
32
0.508
Engineering & Technology / Meteorology & Atmospheric Sciences
Planetary Science
Icy Satellites
Europa Clipper Mission
See All Rankings and Analysis
* Total H Index Rankings
Rankings
42,306
United States
17,317
98
Ranking Based On Selection: 98
Lucy Mcfadden
Lucy Mcfadden
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
63
32
0.508
Engineering & Technology / Meteorology & Atmospheric Sciences
planetary science
See All Rankings and Analysis
* Total H Index Rankings
Rankings
43,111
United States
17,619
99
Ranking Based On Selection: 99
Glenn Diskin
Glenn Diskin
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
62
47
0.758
Others
See All Rankings and Analysis
* Total H Index Rankings
Rankings
43,230
United States
17,653
100
Ranking Based On Selection: 100
Eric Switzer
Eric Switzer
NASA Ames Research Center California, United States United States
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
62
46
0.742
Natural Sciences / Physics
cosmic background radiation
instrumentation
See All Rankings and Analysis