The 2nd edition of Research.com ranking of the best scholars in the
field of Environmental Sciences was created using data
combined from a wide range of data sources including OpenAlex and
CrossRef. The bibliometric data for devising the citation-based metrics were
acquired on 21-12-2022. Position in the ranking is based on a
scholar’s D-index (Discipline H-index), which
only includes papers and citation
values for an examined discipline.
The focus of our Environmental Sciences research
Research.com’s best scientists ranking is a trustworthy account of leading scholars from the field of Environmental Sciences, established by means of a meticulous examination of 166,880 scientists identified from various bibliometric data sources. For the area of Environmental Sciences, more than 11258 scientists were examined.
What is D-index acceptance threshold for Environmental Sciences
The D-index threshold for approving a scientist to be considered is set to 30 if the majority of of their publications are in the area of Environmental Sciences. The approval criteria for scholars to be considered into the ranking of top researchers are based on the D-index, ratio of the contributions made within the given discipline in addition to the awards and achievements of the scholars. The D-index threshold for listing best scientists is set as an increment of 10 depending on the overall number of scientists projected for each scientific field whilst guaranteeing that the top 1% of leading researchers are considered into the list. We expect a proximity of 30% or less between a scholar’s general H-index and their D-index.
Extra verification rules
As our leading goal is to make sure that only genuine scientists are mentioned in the ranking we realize that numbers are never meant to be a full tool to assess the contributions of scientists. For that reason we manually inspect every profile and cross-correlate it against publications in a wide range of reliable sources. Although it’s not a factor defining a scholar’s position in the ranking, the number of papers published in well-known journals and conference proceedings should form a valuable secondary implication of their contribution to research in a given area of science. Position in the ranking is determined by each scientist’s D-index with the help of metrics compiled from OpenAlex and CrossRef, which are the most trustworthy and well-established bibliometric databases of this kind accessible to the scientific community. A comprehensive overview of our research policy can be found on our methodology page.
Our aim is to motivate scholars, entrepreneurs and politicians worldwide to explore where prominent experts are heading and to give an opportunity for the entire scientific community to get to know who the leading experts in specific disciplines, in different countries, or even within research institutions are.
Key findings for Environmental Sciences
With 176 scholars Japan ranks in spot 10 in the world.
As far as scientific affiliations are concerned, the institution with the highest number of leading scientists in Japan is University of Tokyo with 32 scientists affiliated with it being features in the Environmental Sciences ranking. It is followed by Chubu University with 26 scholars. Ranking thirds is Ehime University with 13 scholars.
Prominent scientists listed in Japan are representing Ehime University, Chubu University, University of Tokyo, Japan Aerospace Exploration Agency, Tokyo University of Agriculture and Technology, Kyushu University, National Institute of Polar Research, Tokyo Institute of Technology, Tokai University, National Institute for Environmental Studies.
Professor Shinsuke Tanabe from Ehime University is highlighted as the best scientist in Japan in our ranking with a D-index of 121. Ranking on spot no. 2 in Japan is Kimitaka Kawamura from Chubu University with a D-index of 97. The third position in Japan is taken by Ryo Tatsukawa from Ehime University with a D-index of 81.
The average D-index for the top 10% scholars is 72 in comparison to an average of 41 for all 176 scholars listed in our ranking.
The average number of publications within the area of Environmental Sciences for the top 3% of researchers in the ranking is 437 against an average of 205 for all 176 scientists.
The average number of citations for the top 10% researchers is 19438 against an average of 8149 for all 176 scientists.