The Emerging Sources Citation Index (ESCI) was launched in 2015 by Thomson Reuters as a new database in Web of Science. Since 2017 the index has been produced by Clarivate Analytics. It started with around 3,000 journals, covering the full range of subject areas.
The Emerging Sources Citation Index aims to extend the scope of publications in the Web of Science to include high-quality, peer reviewed publications. It ensures important research is visible in the Web of Science Core Collection.
The selection process for ESCI is the first step before the journal can be considered for inclusion in other Web of Science indexes. These include the Science Citation Index (SCI), Social Science Citation Index (SSCI), and Arts and Humanities Citation Index (AHCI).
Journals accepted for coverage must meet several criteria (to be peer reviewed; to follow ethical publishing practices; to meet certain technical requirements, etc.)
All journals submitted to the core Web of Science databases will be evaluated. If they’re successful they will be indexed in the ESCI while undergoing more in-depth editorial review. Journals can also move from the core Web of Science Indexes to the ESCI if they no longer meet the conditions of that index.
Articles in ESCI indexed journals will be included in an author’s h-index calculation.
Inclusion in the ESCI improves the visibility of the journal and represents a mark of quality.