Data Sources and Citation Metrics
The 5th edition of the Research.com Best Environmental Sciences Scientists in Greece Ranking is primarily constructed using bibliometric data sourced from OpenAlex and CrossRef, complemented by multiple other reputable data sources. These platforms represent some of the most comprehensive and reliable bibliometric databases available to the research community, providing extensive coverage of publications, citations, and associated metadata. The bibliometric data used to devise the citation-based metrics in this ranking were collected on January 12, 2026.
A scientist’s position in the ranking is determined by their D-index (Discipline H-index), which is a specialized variant of the traditional H-index. The D-index exclusively considers publications and citation metrics pertinent to the examined discipline—in this case, Environmental Sciences—ensuring a precise reflection of a researcher's impact within their specific area of expertise.
Scope of Research and Ranking Criteria
This edition of the ranking evaluated a total of 279,971 scientist profiles drawn from diverse bibliometric data sources across all disciplines. Within this extensive dataset, 67 scientists were specifically identified and analyzed under the discipline of Environmental Sciences.
To qualify for inclusion in the ranking, a scientist’s D-index was required to be at least 30, with the majority of their tier publications situated within the Environmental Sciences field. Additionally, scientists’ awards and notable achievements in Environmental Sciences were factored into the consideration process, further substantiating their contributions to the discipline.
The threshold for the D-index to identify top researchers is calibrated as increments of 10, adapted to the estimated total number of scholars within each discipline. This approach ensures that the ranking consistently includes the top 1% of leading scholars in the respective field, maintaining rigor and exclusivity. Furthermore, candidates generally exhibit a proximity of 30% or less between their general H-index and discipline-specific D-index, indicating focused productivity within Environmental Sciences.
Verification and Validation Practices
Understanding the limitations inherent in raw bibliometric data as an absolute evaluative tool, the research team has undertaken comprehensive manual verification of all scientist profiles featured in this ranking. Profiles were meticulously cross-correlated against publications indexed in an extensive range of trustworthy and authoritative sources to confirm accuracy and consistency.
While not a direct factor influencing a researcher’s rank, the count of papers published in prominent journals and esteemed conference proceedings serves as a valuable secondary indicator of a scientist’s scholarly contribution within Environmental Sciences.
The final position within the ranking is strictly based on the D-index values derived from OpenAlex and CrossRef databases, recognized as the most prominent and well-established bibliometric resources available. Readers seeking more detailed information on the methodology employed in the creation of this ranking are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire and equip researchers, academic institutions, corporations, and policymakers worldwide to identify and follow the trajectories of leading experts. By providing a meticulously curated and transparent ranking of the foremost scientists in specific disciplines, countries, and institutions, we aim to foster greater awareness, collaboration, and strategic decision-making within the global scientific community.
This ranking serves not only as a recognition of excellence but also as a reliable resource that enhances the visibility of pioneering research and facilitates connections among the world’s most influential environmental sciences scholars.
