Analysis and Discussion of Atmospheric Precursor of European Heat Summers

Figure 7

Time series of the December-January BEST index, according to [4]. The year dates refer to January of the year indicated and to December of the year before (e.g., 1959 refers to December 1958 and January 1959). Positive values indicate El Niño events; negative values indicate La Niña events. The BEST index is extreme for the years with false alarms or missed events according to GNDI.