Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Waste management
Water resources management
Air pollution control
Climate change and sustainable development
Environmental i
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,991
4,942
0.412
* Total Citation Counts Rankings
Ranking Based On Selection :2
Conservation of energy
thermal comfort and indoor air quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,180
3,499
0.566
* Total Citation Counts Rankings
Ranking Based On Selection :3
Water Treatment
Advanced Oxidation Processes
Instrumental Analysis
Spectroscopy
Forensic Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,999
2,886
0.577
* Total Citation Counts Rankings
Ranking Based On Selection :4
Occupational Health
Migrant Workers Health
Built Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,815
2,085
0.433
* Total Citation Counts Rankings
Ranking Based On Selection :5
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,044
2,081
0.515
* Total Citation Counts Rankings
Ranking Based On Selection :6
water quality
eutrophication
bayesian modelling
environmental remote sensing & GIS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,310
1,688
0.731
* Total Citation Counts Rankings
Ranking Based On Selection :7
water security
food security
politics
MENA region
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,126
736
0.654
* Total Citation Counts Rankings
Ranking Based On Selection :8
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
481
0.803
* Total Citation Counts Rankings
Ranking Based On Selection :9
Water resources
Climate Change
Adaptation
Resilience
Vulnerability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
589
300
0.509
* Total Citation Counts Rankings
Ranking Based On Selection :10
environmental management
governance
energy
O&G
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
375
224
0.597
* Total Citation Counts Rankings
Ranking Based On Selection :11
Environmental Science
Toxicology
Ecology
Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28
28
1.000
Mutasem El Fadel
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,991
4,942
0.412
Waste management
Water resources management
Air pollution control
Climate change and sustainable development
Environmental i
Kamel Ghali
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,180
3,499
0.566
Conservation of energy
thermal comfort and indoor air quality
Antoine Ghauch
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,999
2,886
0.577
Water Treatment
Advanced Oxidation Processes
Instrumental Analysis
Spectroscopy
Forensic Science
Rima Habib
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,815
2,085
0.433
Occupational Health
Migrant Workers Health
Built Environment
George M Ayoub
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,044
2,081
0.515
Environmental Engineering
Ibrahim Alameddine
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,310
1,688
0.731
water quality
eutrophication
bayesian modelling
environmental remote sensing & GIS
Martin Keulertz
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,126
736
0.654
water security
food security
politics
MENA region
Darine A Salam
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
481
0.803
Environmental Science
Nadim Farajalla
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
589
300
0.509
Water resources
Climate Change
Adaptation
Resilience
Vulnerability
Grace Rachid
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
375
224
0.597
environmental management
governance
energy
O&G
climate change
Nataly W El-Haddad
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28
28
1.000
Environmental Science
Toxicology
Ecology
Health