The h-index assesses the impact of an individual author's total output and takes into account both the quantity and quality of publications. The h-index is based on the number of publications and is meaningful when compared to others within the same discipline area. Researchers in one field may have very different h-indices than researchers in another (e.g. Earth Science vs Physics). An h-index of 10 means an author has published ten papers with at least ten citations each. The Web of Science database offers citation reports that address this impact of publication. Please note, the h-index is based on the publications indexed in the Web of Science database only. It does not take into account publications in non-refereed journals, books, and reports.