Data Sources and Citation Metrics
The 5th edition of the Research.com Best Environmental Sciences Scientists in Saudi Arabia Ranking leverages comprehensive bibliometric data derived primarily from OpenAlex and CrossRef, alongside multiple other reputable data sources. These platforms provide extensive coverage of scholarly publications, citation data, and related metadata critical for accurately assessing research performance. The bibliometric data underpinning the citation-based metrics used to construct this ranking were collected on January 12, 2026.
A scientist’s position in this ranking is determined by their D-index (Discipline H-index), a metric specifically designed to evaluate a researcher’s scholarly impact within a defined discipline. Unlike the traditional H-index, the D-index exclusively accounts for papers and citations relevant to the examined field—in this case, Environmental Sciences—thus offering a more precise measurement of domain-specific research influence.
Scope of Research
To establish the ranking, a total of 279,971 scientist profiles identified from a wide array of bibliometric databases were rigorously examined across all academic disciplines. Within this comprehensive dataset, 12 scientists specializing in Environmental Sciences in Saudi Arabia were identified and evaluated. Eligibility for the ranking required a minimum D-index of 30, ensuring recognition of only highly accomplished researchers. Additionally, a majority of each scientist’s tier publications needed to fall within the Environmental Sciences domain, reinforcing the disciplinary focus of the ranking. Awards and recognized achievements in Environmental Sciences also factored into qualification considerations.
The D-index threshold to qualify top researchers is dynamically adjusted in increments of 10, dependent on the total estimated number of scholars within each discipline. This approach guarantees that the top 1% of leading scholars are included in the final list. Furthermore, to validate disciplinary specialization, the proximity between a scientist’s general H-index and their D-index is maintained at 30% or less, ensuring consistent and meaningful representation of subject-specific impact.
Verification and Methodological Rigor
Recognizing that raw bibliometric data alone cannot definitively evaluate individual scholarly output, the Research.com team applies extensive manual verification procedures. Each scientist’s profile was meticulously cross-referenced against publications indexed in a broad range of trusted sources, ensuring veracity and accuracy of attributed work. While publication count in prominent journals and conference proceedings does not directly determine a researcher's rank, it serves as an important secondary indicator of substantive contributions to the field.
The primary ranking metric—the D-index—is calculated strictly based on data from OpenAlex and CrossRef, two of the most prominent and widely respected bibliometric databases accessible to the global research community. This dual-database approach enhances reliability and minimizes potential biases inherent in single-source data collection.
For detailed information about the comprehensive methodologies employed in developing this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s broader mission to motivate researchers, organizations, and policy makers worldwide to actively monitor emerging leaders and trends within scientific disciplines. Providing an accessible platform that identifies top experts by specialty, country, and institution fosters collaboration, informed decision-making, and recognition of excellence across the scientific community.
By illuminating the leadership landscape in Environmental Sciences in Saudi Arabia and beyond, Research.com aims to facilitate knowledge exchange, promote scientific advancement, and reinforce the global research ecosystem’s transparency and inclusiveness.
