An institution’s position in the ranking is established based on the aggregate sum of the D-indexes (Discipline H-indexes) of all affiliated scholars whose main research area is Environmental Sciences. The D-index is an advanced metric that exclusively incorporates a given discipline’s publications and corresponding citation data. This ensures the results are highly relevant to Environmental Sciences, providing a precise measure of scholarly impact within the field.
Scope of the Research and Analysis
The scope of this ranking is broad and comprehensive. A total of 279,971 scientist profiles were examined, identified from a variety of bibliometric data sources. Specifically, 17,263 scientists whose main research area is Environmental Sciences were rigorously analyzed.
To be included in the evaluation, each scientist needed a D-index threshold of 30, with the majority of their academic output centered on Environmental Sciences. The ranking also took into account each scientist’s awards and achievements in the field, further underscoring outstanding contributions to Environmental Sciences.
The D-index threshold for qualifying as a top researcher is flexibly set in increments of 10, depending on the estimated total number of scholars in each discipline. This strategic adjustment guarantees that the top 1% of leading scholars per discipline are included. Additionally, there is a strict requirement that a scientist’s D-index remains within a proximity of 30% or less compared to their general H-index, further ensuring the reliability of discipline-specific impact. Again, recognition of a scientist’s achievements in their research area serves as an additional element in the evaluation process.
Additional Verification Practices
Research.com recognizes that bibliometric data alone cannot serve as an absolute measure to evaluate scholarly output. Consequently, all scientist profiles included in the ranking have undergone manual verification and cross-correlation against publications featured in a wide array of trustworthy sources.
While not a formal component in determining ranking position, the total number of papers published in prominent journals and notable conference proceedings is acknowledged as a valuable secondary indicator of a researcher’s contribution to Environmental Sciences.
The ultimate position in the ranking is determined by each researcher’s H-index, derived from data within OpenAlex and CrossRef — globally recognized, leading bibliometric databases known for their accuracy and reliability.
For a deeper understanding of the extensive methodology underpinning these rankings, we encourage you to consult our methodology page.
The Research.com Mission
Research.com is motivated by a mission to inspire scientists, business leaders, and policymakers worldwide to explore current directions of top experts. Our ranking furnishes the global academic and research community with a reliable tool to discover the leading experts across specific disciplines, various countries, and within individual research institutions. This mission is fundamental to fostering collaboration and advancing scientific progress.
Key Results of the 4th Edition Ranking
- Top 3 institutions in Turkey with the highest number of leading scientists in Environmental Sciences:
- Istanbul Technical University (2 scientists)
- Boğaziçi University (2 scientists)
- Ondokuz Mayis University (1 scientist)
- Most prominent scholars globally in Environmental Sciences represented by institutions such as:
- California Institute of Technology
- Harvard University
- Rice University
- University of Almería
- University of Helsinki
- Korea University
- University of East Anglia
- University at Albany, State University of New York
- Pennsylvania State University
- University of Colorado Boulder
- Top scientists in Environmental Sciences worldwide:
- No. 1: Professor P. Ciais (French Alternative Energies and Atomic Energy Commission, CEA) — D-index 207
- No. 2: John H. Seinfeld (California Institute of Technology) — D-index 194
- No. 3: Daniel J. Jacob (Harvard University) — D-index 191
- Statistical ranking highlights:
- Average total D-index for top 5% universities: 2061
- Average total D-index for all 1001 institutions: 318
- Average number of published articles (Environmental Sciences) per scientist at top 5% universities: 7,534
- Average for all 1001 universities: 1,185
- Average number of citations for researchers at top 1% universities: 279,971
- Average citations for all 1001 universities: 83,066
Through rigorous data collection, careful verification, and transparent methodology, the Research.com Best Environmental Sciences Universities in Turkey Ranking offers the academic community an authoritative overview of institutional and individual excellence in the field for 2024 and beyond.
