A scientist’s position in this ranking is determined by their D-index (Discipline H-index), a discipline-specific adaptation of the traditional H-index. The D-index selectively includes only those papers and citation metrics relevant to Environmental Sciences, thereby offering a focused measure of scholarly impact within this specific domain.
Scope of Research and Eligibility Criteria
The ranking draws from a broad examination of 279,971 scientist profiles identified across numerous bibliometric databases, spanning all scientific disciplines. From this comprehensive pool, 9,674 scientist profiles specific to Environmental Sciences were analyzed in detail. To qualify for inclusion in the ranking, scientists were required to have a D-index of at least 30. Additionally, a majority of their tier publications had to be firmly situated within the Environmental Sciences field, ensuring the relevance of their contributions.
Besides bibliometric indicators, scientists’ awards and notable achievements in Environmental Sciences were taken into consideration to augment the evaluation process. The threshold for the D-index is adjusted by increments of 10 relative to the overall number of scholars estimated within each discipline, strategically designed to include the top 1% of leading researchers. Furthermore, the D-index values used for ranking are expected to have a maximum proximity gap of 30% compared to the researcher’s general H-index, maintaining coherence between general and discipline-specific scholarly performance.
Additional Verification Practices
Recognizing that raw bibliometric data alone cannot fully capture the depth and nuance of scholarly output, the Research.com team meticulously verified all scientist profiles. This manual verification process involved cross-correlation of publication records against a range of trustworthy sources to ensure the authenticity and accuracy of the data presented.
While the number of papers published in prominent journals and esteemed conferences does not directly influence the ranking position, it remains a valuable secondary indicator of a scientist’s research influence within Environmental Sciences. The ranking itself is firmly grounded in the D-index computed from information aggregated primarily via OpenAlex and CrossRef—two of the most prominent, rigorous, and widely respected bibliometric databases accessible to the global research community.
We invite readers to review the detailed methodology underpinning this ranking on our methodology page, where the complete procedural framework and data handling practices are transparently documented.
Research.com’s Mission and Vision
At Research.com, our mission is to foster a deeper understanding within the global scientific ecosystem by highlighting where leading experts direct their research efforts. By providing a transparent and trustworthy platform that identifies the foremost authorities in specific scientific domains, countries, and research institutions, we aim to motivate researchers, enterprises, and policymakers worldwide.
This initiative facilitates informed decision-making, encourages collaborative opportunities, and supports strategic investment in science and innovation. We take pride in the rigorous and thoughtful construction of this ranking, reflecting our commitment to elevate the visibility of exceptional scientific contributions and stimulate ongoing excellence in Environmental Sciences and beyond.
