Fig. 1: Characteristics of detected heatwaves.
From: Current and projected regional economic impacts of heatwaves in Europe
a Start date (left) and duration (in days, right) of the identified events at the regional level in the four years analysed, where N denotes the number of events identified each year. Grey-shaded areas in the left panel correspond to summer months (JJA). b Total area (as percentage of total number of regions) affected by detected heatwaves (TX90p criterion) in the four years studied. c Annual cumulative observed heat during heatwaves in outdoor environments*, as obtained from the sun version of WBGT. *A Wet Bulb Degree Day (WBDD) index was constructed based on the concept of Heating Degree Days (Spinoni et al., 2015) using a temperature threshold of 26 ºC.
