Fig. 2From: Heatwaves: does global research reflect the growing threat in the light of climate change?Cluster analysis of the keywords used (threshold: at least 20 occurrences). Thematical affiliations: red cluster – impact on human health and risk factors, blue cluster – high atmospheric temperatures and climate, green cluster – high oceanic temperatures, and impact on vegetation, yellow cluster –urbanization and habitation, modellingBack to article page