Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (870,053 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.
Microbial electrochemistry
BIo-Hydrogen
Membrane Separation
Aanaerobic digestion
Air pollution
Metrics
H-Index
i10 Index
Citation
35
60
3,497
Earth and Planetary Sciences
Climate Change
Renewable Energy
Metrics
H-Index
i10 Index
Citation
34
75
7,613
Water Quality
Desalination
Soil Salinity
Metrics
H-Index
i10 Index
Citation
30
69
4,348
Waste valorization
Biorefinery
Biofuel
Bioplastic
Metrics
H-Index
i10 Index
Citation
28
48
2,628
Environmental Sciences
Metrics
H-Index
i10 Index
Citation
25
27
3,760
Waste Management
Landfilling
Biogas
Expert System
Metrics
H-Index
i10 Index
Citation
23
35
1,299
Groundwater Hydrology
Geo-environmental Engineering
Contaminant transport in groundwater
Image
Metrics
H-Index
i10 Index
Citation
22
44
1,797
Hydrogeology
Groundwater modeling
Decision support systems
Metrics
H-Index
i10 Index
Citation
21
34
1,230
Environmental chemistry
Analytical chemistry
Water treatment
Adsorption
Waste treatment
Metrics
H-Index
i10 Index
Citation
21
25
2,320
Environmental Impact Assessment
Pollution remediation and waste management
Climate change adaptation.
Metrics
H-Index
i10 Index
Citation
20
31
1,104
Climate change
Hydrology
Metrics
H-Index
i10 Index
Citation
15
21
596
Nano Membrane Technology
Biosorption Environmental Engineering
Renewable Energy
Metrics
H-Index
i10 Index
Citation
13
25
1,038
Environmental and Water Resources Engineering (Groundwater Modeling)
Metrics
H-Index
i10 Index
Citation
11
12
571
Water Resources Management
Metrics
H-Index
i10 Index
Citation
11
12
481
Chemical and Environmental Engineering
Metrics
H-Index
i10 Index
Citation
11
13
487
Water Treatment
Soil Science and Environmental issues
Metrics
H-Index
i10 Index
Citation
10
10
551
* Rankings
Ranking Based
On Selection: 17
soils and water resources management
sustainable environmental management
HYDRUS modelling
Metrics
H-Index
i10 Index
Citation
7
6
268
* Rankings
Ranking Based
On Selection: 18
Environmental Engineering
Metrics
H-Index
i10 Index
Citation
7
6
294
Enviornmental Engineering
Metrics
H-Index
i10 Index
Citation
7
5
156
* Rankings
Ranking Based
On Selection: 20
Water resources management
Hydrology
Environmental Science
Data Analytics
Genetic Programming
Metrics
H-Index
i10 Index
Citation
6
6
294
* Rankings
Ranking Based
On Selection: 21
Wastewater treatment
Environmental Engineering
Heat Transfer
Renewable Energy
Metrics
H-Index
i10 Index
Citation
4
1
149
* Rankings
Ranking Based
On Selection: 22
Chemical Engineering
Environmental Engineering
Metrics
H-Index
i10 Index
Citation
2
2
82
* Rankings
Ranking Based
On Selection: 23
Environmental Management
Occupational Safety and Health
Bioremediation
Metrics
H-Index
i10 Index
Citation
2
0
11
* Rankings
Ranking Based
On Selection: 24
Environment
Material
Soil
Water
Metrics
H-Index
i10 Index
Citation
1
0
8
Abdullah Al Mamun
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
35
60
3,497
Microbial electrochemistry
BIo-Hydrogen
Membrane Separation
Aanaerobic digestion
Air pollution
Yassine Charabi
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
34
75
7,613
Earth and Planetary Sciences
Climate Change
Renewable Energy
Mushtaque Ahmed
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
30
69
4,348
Water Quality
Desalination
Soil Salinity
Sivakumar Nallusamy
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
28
48
2,628
Waste valorization
Biorefinery
Biofuel
Bioplastic
Shaharoona
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
25
27
3,760
Environmental Sciences
Mohammed Fm Abushammala
Middle East College
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
23
35
1,299
Waste Management
Landfilling
Biogas
Expert System
Motasem YD Alazaiza
A'Sharqiyah University
Ibra, Oman
Metrics
H-Index
i10 Index
Citation Counts
22
44
1,797
Groundwater Hydrology
Geo-environmental Engineering
Contaminant transport in groundwater
Image
Azizallah Izady
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
21
34
1,230
Hydrogeology
Groundwater modeling
Decision support systems
El Said I El Shafey
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
21
25
2,320
Environmental chemistry
Analytical chemistry
Water treatment
Adsorption
Waste treatment
Hameed Sulaiman
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
20
31
1,104
Environmental Impact Assessment
Pollution remediation and waste management
Climate change adaptation.
Luminda Gunawardhana
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
15
21
596
Climate change
Hydrology
Senthilkumar R
Metrics
H-Index
i10 Index
Citation Counts
13
25
1,038
Nano Membrane Technology
Biosorption Environmental Engineering
Renewable Energy
Environmental and Water Resources Engineering (Groundwater Modeling)
Akbar Karimi
Metrics
H-Index
i10 Index
Citation Counts
11
12
481
Water Resources Management
Chemical and Environmental Engineering
Mansour Al Haddabi
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
10
10
551
Water Treatment
Soil Science and Environmental issues
Ahmed Al-Mayahi
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
7
6
268
soils and water resources management
sustainable environmental management
HYDRUS modelling
Sajjala Sreedhar Reddy
University of Nizwa
Nizwa, Oman
Metrics
H-Index
i10 Index
Citation Counts
7
6
294
Environmental Engineering
Siva Subramanian
Higher College of Technology
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
7
5
156
Enviornmental Engineering
Mohammad Sadegh Khorshidi|Mohammad S. Khorshidi
Sultan Qaboos University
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
6
6
294
Water resources management
Hydrology
Environmental Science
Data Analytics
Genetic Programming
Saravanan Am
Metrics
H-Index
i10 Index
Citation Counts
4
1
149
Wastewater treatment
Environmental Engineering
Heat Transfer
Renewable Energy
Joefel Jessica Cansino Dumaran
Metrics
H-Index
i10 Index
Citation Counts
2
2
82
Chemical Engineering
Environmental Engineering
Dodeye Ubana
Modern College of Business & Science
Bawshar, Oman
Metrics
H-Index
i10 Index
Citation Counts
2
0
11
Environmental Management
Occupational Safety and Health
Bioremediation
Eng Ahmed Al-Hinai
Military Technological College
Muscat, Oman
Metrics
H-Index
i10 Index
Citation Counts
1
0
8
Environment
Material
Soil
Water