“2-yr mean citedness” is the OpenAlex field summary_stats.2yr_mean_citedness (CC0): mean citations per paper over a two-year window. It is a raw bibliometric field, not a journal rating, and is not used for default ranking.
Subject classification
Social Sciences169Arts and Humanities124Engineering73Social Sciences: Communities. Classes. Races: Urban groups. The city. Urban sociology1Technology: Engineering (General). Civil engineering (General)1Technology: Environmental technology. Sanitary engineering1