Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Lydia A Olaka](https://cdn.adscientificindex.com/pictures/a6/92696.jpg)
Groundwater
Climate change
Stable isotopes
Medical Geology
Biogeochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
33
0.868
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Francis Aduol](https://cdn.adscientificindex.com/pictures/ce/4637235.jpg)
Geodesy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
0
0.000
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Christine Omuombo](https://cdn.adscientificindex.com/pictures/c7/4637205.jpg)
Geology
Sedimentology
water
Climate Change
Natural Resource Management and Planning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Vincent O. Otieno](https://cdn.adscientificindex.com/pictures/92/4637231.jpg)
Geoscience and Environment
Hydroclimatic Variability
Regional Climate Modelling and Downscaling
Statistical methods and indic
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Ochieng Adero](https://cdn.adscientificindex.com/pictures/40/5030355.jpg)
Geomagnetism
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Lydia A Olaka
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
33
0.868
Groundwater
Climate change
Stable isotopes
Medical Geology
Biogeochemistry
Francis Aduol
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
0
0.000
Christine Omuombo
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Geology
Sedimentology
water
Climate Change
Natural Resource Management and Planning
Vincent O. Otieno
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
Geoscience and Environment
Hydroclimatic Variability
Regional Climate Modelling and Downscaling
Statistical methods and indic
Ochieng Adero
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0