Table 1.

List of all temperature descriptors tested as explanatory variables for the duration of heating events, temperature intensity and variability. In bold are the descriptors selected by the models.

Descriptor type	TAG	Temperature descriptors
Duration	D90	Max duration (days) > 90th percentile
Duration	D95	Max duration (days) > 95th percentile
Duration	D27	Max duration (days) of heat event > 27° C
Duration	D26	Max duration (days) of heat event > 26° C
Duration	D25	Max duration (days) of heat event > 25° C
Duration	D24	Max duration (days) of heat event > 24° C
Duration	D23	Max duration (days) of heat event > 23° C
Intensity	MAXT	Max T
Intensity	AT	Average T
Intensity	MINT	Min T
Intensity	MED	Median T
Intensity	S95	Sum of days > 95th percentile
Intensity	S90	Sum of days > 90th percentile
Intensity	S27	Sum of days > 27° C
Intensity	S26	Sum of days > 26° C
Intensity	S25	Sum of days > 25° C
Intensity	S24	Sum of days > 24° C
Intensity	S23	Sum of days > 23° C
Variability	F90	# of heating events > 90th percentile
Variability	F95	# of heating events > 95th percentile
Variability	F24	# of heating events > 24° C
Variability	NDD	# daily ΔT > mean daily ΔT
Variability	NHS	# of heating shifts (> 4° ΔT) in two days ∧
Variability	SD	Standard deviation
Variability	LDH	Largest daily heating (ΔT, in °C)
Variability	LTH	Largest heating (ΔT, in °C) in two days∨