The ranking of each scientist is determined by their D-index (Discipline H-index), a metric that specifically accounts for publications and citations within the discipline of Environmental Sciences. This tailored approach ensures that a researcher’s impact is assessed relative to their productivity and influence in the targeted scientific field rather than overarching general metrics.
Scope of Research and Inclusion Criteria
The ranking is based on an extensive analysis of 279,971 scientist profiles extracted from a variety of bibliometric databases across all scientific disciplines. Within this dataset, 2,183 scientists specializing in Environmental Sciences were identified and evaluated for inclusion in the ranking.
To qualify, a scientist’s D-index in Environmental Sciences must be at least 30, reflecting a minimum threshold of scholarly impact in the field. Additionally, a majority of tier publications—those with significant influence or recognition—must be explicitly associated with Environmental Sciences. Awards and notable achievements related to Environmental Sciences have also been factored into the assessment to recognize exceptional contributions beyond citation metrics.
The D-index thresholds are calibrated in increments of 10 relative to the estimated size of the disciplinary community. This scaling ensures that the ranking consistently incorporates the top 1% of scholars within each discipline, maintaining fairness and relevance. An additional quality control criterion requires there to be no greater than a 30% difference between a scientist’s general H-index and their Environmental Sciences-specific D-index, promoting alignment between overall scholarly reputation and discipline-focused impact.
Additional Verification and Ranking Methodology
We acknowledge that raw bibliometric data alone cannot comprehensively capture the full spectrum of a scholar’s contributions. Accordingly, all scientist profiles considered for this ranking underwent meticulous manual verification. This process included cross-correlation of publication records against trusted sources to ensure accuracy and reduce errors related to publication attribution or citation counts.
While not directly influencing the ranking positions, the number of papers published in prominent journals and conference proceedings remains a valuable secondary indicator of a scientist’s contribution to the Environmental Sciences domain. Our principal ranking metric, the D-index, is sourced from the integrated data of OpenAlex and CrossRef—arguably the most comprehensive and widely recognized bibliometric databases available to the research community.
For further details on the rigorous and systematic methodology employed in the creation of this ranking, please visit our methodology page.
Research.com’s Mission and Purpose Behind the Ranking
At Research.com, our mission is to inspire and equip researchers, academic institutions, industry leaders, and policymakers worldwide to better understand the trajectories of leading experts in their fields. By delivering authoritative insights into who the foremost specialists are—whether within specific disciplines, countries, or institutions—we foster transparency and collaboration across the global scientific community.
This ranking serves as an essential tool to spotlight outstanding scholars in Environmental Sciences in Nepal, driving recognition of excellence, encouraging scholarly advancement, and supporting informed decision-making in research funding and policy development. We are committed to ensuring that this endeavor reflects the highest standards of rigor, fairness, and credibility.
