Comparing Unique Title Coverage of Web of Science and Scopus in Earth and Atmospheric Sciences.

The current journal titles in earth and atmospheric sciences, that are unique to each of two databases, Web of Science and Scopus, were identified using different methods. Comparing by subject category shows that Scopus has hundreds of unique titles, and Web of Science just 16. The titles unique to each database have low SCImago Journal Rank Indicators (Scopus) and Impact Factors (Web of Science), thus indicating that the unique titles play a...