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
climate change
carbon cycle
Earth system modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,684
28,377
0.795
* Total Citation Counts Rankings
Ranking Based On Selection :2
Physical Geography
Hydrology
Climate Science
Environmental Modeling
Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,257
4,075
0.651
* Total Citation Counts Rankings
Ranking Based On Selection :3
climate change
small islands
island studies
social capital
geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,021
5,868
0.975
* Total Citation Counts Rankings
Ranking Based On Selection :4
Evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,554
1,428
0.559
* Total Citation Counts Rankings
Ranking Based On Selection :5
Evolution
Systematics
Phylogeny
Palaeontology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,446
553
0.382
* Total Citation Counts Rankings
Ranking Based On Selection :6
Environmental impacts of ashfall
In-plume processing of ash
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
724
442
0.610
* Total Citation Counts Rankings
Ranking Based On Selection :7
Climate Change
Biosphere-Atmosphere-Interactions
Climate Extremes
Ecosystem Productivity
Climate Extremes & Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
526
482
0.916
* Total Citation Counts Rankings
Ranking Based On Selection :8
Magnetism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
275
176
0.640
Julia Pongratz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,684
28,377
0.795
climate change
carbon cycle
Earth system modeling
Ralf Ludwig
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,257
4,075
0.651
Physical Geography
Hydrology
Climate Science
Environmental Modeling
Remote Sensing
Jan Petzold
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,021
5,868
0.975
climate change
small islands
island studies
social capital
geography
Martin Dohrmann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,554
1,428
0.559
Adriana López Arbarello
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,446
553
0.382
Evolution
Systematics
Phylogeny
Palaeontology
Paul Martin Ayris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
724
442
0.610
Environmental impacts of ashfall
In-plume processing of ash
David Gampe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
526
482
0.916
Climate Change
Biosphere-Atmosphere-Interactions
Climate Extremes
Ecosystem Productivity
Climate Extremes & Health
Michael Wack
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
275
176
0.640