Table 2.

Inputs in the HEATS model.

	Symbol	Unit
Meteorological parameters
●Air temperature	Ta	°C
●Wind speed	v’	m/s
●Air vapor pressure	e	hPa
●Relative humidity	RHa	%
●Air pressure	p	hPa
●Ground surface temperature	Tg	°C
●Direct solar radiation	Kdir	W/m2
●Diffuse solar radiation	Kdif	W/m2
●Reflected solar radiation	Kref	W/m2
●Longwave radiation from air	La	W/m2
●Longwave radiation from ground	Lg	W/m2
●Cloudiness	N	%
●Sun altitude	hSl	°
Terrain data
●Gradient data	slope	°
Physiological parameters
●Metabolic heat production	M	W/m2
●Skin temperature	Ts	°C
●Motion velocity	v	m/s
PFM parameters
●Albedo of PFM surface	apfm	%
●Dead space volume	Vpfm	m3
Clothing properties
●Albedo of clothing	a	%
●Clothing insulation	Icl	clo