Citation Rankings
Highly Cited Researchers

National Institute of Polar Research Highly Cited Researchers CitationNatural Sciences / Physics Rankings (Sort by last 6 years Citation Index) 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Japan
Ryuho Kataoka
Space Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,828
1,935
0.505
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Japan
Takanori Nishiyama
Upper Atmospheric Physics
Space Plasma Physics
Planetary Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
589
391
0.664
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
Japan
Tikemani Bag
Space Physics
Helio-Physics
Solar Physics
Planetary Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141
126
0.894
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
Japan
Sachin Alexander Reddy
Space Plasma Physics
Ionospheres
Machine Learning
Space Weather
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42
42
1.000
* Last 6 Years Citation Counts Rankings
Rankings
274,072
Japan
4,591
7
Ranking Based On Selection: 1
Ryuho Kataoka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,828
1,935
0.505
* Last 6 Years Citation Counts Rankings
Rankings
833,719
Japan
15,057
23
Ranking Based On Selection: 2
Takanori Nishiyama
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
589
391
0.664
Upper Atmospheric Physics
Space Plasma Physics
Planetary Science
* Last 6 Years Citation Counts Rankings
Rankings
1,346,344
Japan
22,913
26
Ranking Based On Selection: 3
Tikemani Bag
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141
126
0.894
Space Physics
Helio-Physics
Solar Physics
Planetary Science
* Last 6 Years Citation Counts Rankings
Rankings
1,794,107
Japan
29,280
29
Ranking Based On Selection: 4
Sachin Alexander Reddy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42
42
1.000
Space Plasma Physics
Ionospheres
Machine Learning
Space Weather