the nodes in the red cluster remained rather low throughout the 10-year period but obviously increased
in the last two years of the period according to Figure 5a.
Figure 4 describes the evolution of concepts’ associations in the global warming discourse during
the 10 years. The red cluster included concepts such as “2012”, “hot”, “summer”, “elnino”, and “snow”,
describing the weather abnormalities related to global warming. A notable ﬁnding is that before 2012,
global warming’s association with temperature abnormalities and extreme weather was not salient,