Temperature formulas (Heat Stress Overlay) - Revision history

Frank@tygron.nl at 11:42, 13 April 2026

2026-04-13T11:42:22Z

← Older revision		Revision as of 11:42, 13 April 2026
Line 7:		Line 7:

	where		where
	* <math>T_{a,t}</math> is the calculated [[Temperature_atmosphere_result_type_(~~Heat_Overlay~~)\|atmospheric temperature]] at time t;		* <math>T_{a,t}</math> is the calculated [[Temperature_atmosphere_result_type_(Heat Stress Overlay)\|atmospheric temperature]] at time t;
	* <math>T_{station,t}</math> is the [[Hourly_temperature_(~~Heat_Overlay~~)\|temperature]] measured at a weather station at time t;		* <math>T_{station,t}</math> is the [[Hourly_temperature_(Heat Stress Overlay)\|temperature]] measured at a weather station at time t;
	* <math>UHI_{max,t}</math> is the calculated [[UHI_formula_(~~Heat_Overlay~~)\|Urban Heat Island]] effect at time t;		* <math>UHI_{max,t}</math> is the calculated [[UHI_formula_(Heat Stress Overlay)\|Urban Heat Island]] effect at time t;
	* <math>f_{sun,t}</math> is the [[Sun_daily_motion_(~~Heat_Overlay~~)\|sun daily motion factor]] at time t;		* <math>f_{sun,t}</math> is the [[Sun_daily_motion_(Heat Stress Overlay)\|sun daily motion factor]] at time t;

	==Wet-bulb Temperature formula==		==Wet-bulb Temperature formula==
Line 18:		Line 18:
	* <math>T_{w,t}</math> is the calculated wet-bulb temperature;		* <math>T_{w,t}</math> is the calculated wet-bulb temperature;
	* <math>T_{a,t}</math> is the calculated atmospheric temperature;		* <math>T_{a,t}</math> is the calculated atmospheric temperature;
	* <math>\phi</math> is the [[Sun_altitude_(~~Heat_Overlay~~)\|sun altitude angle]];		* <math>\phi</math> is the [[Sun_altitude_(Heat Stress Overlay)\|sun altitude angle]];
	* Constant values are sourced from the {{Heat DPRA Report}};		* Constant values are sourced from the {{Heat DPRA Report}};

Frank@tygron.nl: Frank@tygron.nl moved page Temperature formulas (Heat Overlay) to Temperature formulas (Heat Stress Overlay)

2026-04-13T11:38:05Z

Frank@tygron.nl moved page Temperature formulas (Heat Overlay) to Temperature formulas (Heat Stress Overlay)

← Older revision	Revision as of 11:38, 13 April 2026
(No difference)

Frank@tygron.nl at 11:53, 13 September 2021

2021-09-13T11:53:14Z

← Older revision		Revision as of 11:53, 13 September 2021
Line 26:		Line 26:
	</references>		</references>
	{{Template:HeatOverlay_formula_nav}}		{{Template:HeatOverlay_formula_nav}}

	~~{{Template:Heat_Module_buttons}}~~

Rudolf@tygron.nl: /* Wet-bulb Temperature formula */

2020-02-13T15:34:04Z

Wet-bulb Temperature formula

← Older revision		Revision as of 15:34, 13 February 2020
Line 19:		Line 19:
	* <math>T_{a,t}</math> is the calculated atmospheric temperature;		* <math>T_{a,t}</math> is the calculated atmospheric temperature;
	* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];		* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];
	* ~~constant~~ values are sourced from the {{Heat DPRA Report}};		* Constant values are sourced from the {{Heat DPRA Report}};

	==See also==		==See also==

Rudolf@tygron.nl at 15:28, 13 February 2020

2020-02-13T15:28:07Z

← Older revision		Revision as of 15:28, 13 February 2020
Line 19:		Line 19:
	* <math>T_{a,t}</math> is the calculated atmospheric temperature;		* <math>T_{a,t}</math> is the calculated atmospheric temperature;
	* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];		* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];
	* constant values are sourced from the {{Heat DPRA Report}}.		* constant values are sourced from the {{Heat DPRA Report}};

	==See also==		==See also==

Rudolf@tygron.nl at 15:27, 13 February 2020

2020-02-13T15:27:52Z

← Older revision		Revision as of 15:27, 13 February 2020
Line 19:		Line 19:
	* <math>T_{a,t}</math> is the calculated atmospheric temperature;		* <math>T_{a,t}</math> is the calculated atmospheric temperature;
	* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];		* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];
			* constant values are sourced from the {{Heat DPRA Report}}.

	==See also==		==See also==

Rudolf@tygron.nl at 13:49, 20 December 2019

2019-12-20T13:49:19Z

← Older revision		Revision as of 13:49, 20 December 2019
Line 1:		Line 1:
	Two temperature formulas are used in the calculation of the PET value:		Two temperature formulas are used in the calculation of the PET value:
	* The atmospheric temperature [[#Atmospheric Temperature formula\|T<sub>a</sub>]]		* The atmospheric temperature [[#Atmospheric Temperature formula\|T<sub>a</sub>]]
	* The wet-bulb ~~temperatur~~ [[#Wet-bulb Temperature formula\|T<sub>w</sub>]]		* The wet-bulb temperature<ref name="bulb" /> [[#Wet-bulb Temperature formula\|T<sub>w</sub>]]

	==Atmospheric Temperature formula==		==Atmospheric Temperature formula==
Line 21:		Line 21:

	==See also==		==See also==
	* [https://en.wikipedia.org/wiki/Wet-bulb_temperature ~~Wet~~-~~bulb temperature]~~		<references>
			<ref name="bulb">Wikipedia • Wet-bulb temperature • https://en.wikipedia.org/wiki/Wet-bulb_temperature • Last visited: 20-12-2019</ref>
			</references>
	{{Template:HeatOverlay_formula_nav}}		{{Template:HeatOverlay_formula_nav}}

	{{Template:Heat_Module_buttons}}		{{Template:Heat_Module_buttons}}

Bobby@tygron.nl at 10:45, 17 December 2019

2019-12-17T10:45:49Z

← Older revision		Revision as of 10:45, 17 December 2019
Line 23:		Line 23:
	* [https://en.wikipedia.org/wiki/Wet-bulb_temperature Wet-bulb temperature]		* [https://en.wikipedia.org/wiki/Wet-bulb_temperature Wet-bulb temperature]
	{{Template:HeatOverlay_formula_nav}}		{{Template:HeatOverlay_formula_nav}}

			{{Template:Heat_Module_buttons}}

Frank@tygron.nl: /* Wet-bulb Temperature formula */

2019-09-20T13:30:43Z

Wet-bulb Temperature formula

← Older revision		Revision as of 13:30, 20 September 2019
Line 13:		Line 13:

	==Wet-bulb Temperature formula==		==Wet-bulb Temperature formula==
	<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659}) + \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 · \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>
	<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659})+ \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 \cdot \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>		<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659})+ \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 \cdot \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>

	where:		where:
	* T<~~sub~~>w,t</~~sub~~> is the calculated wet-bulb temperature;		* <math>T_{w,t}</math> is the calculated wet-bulb temperature;
	* T<~~sub~~>a,t</~~sub~~> is the calculated atmospheric temperature;		* <math>T_{a,t}</math> is the calculated atmospheric temperature;
	* ϕ is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];		* <math>\phi</math> is the [[Sun_altitude_(Heat_Overlay)\|sun altitude angle]];

	==See also==		==See also==
	* [https://en.wikipedia.org/wiki/Wet-bulb_temperature Wet-bulb temperature]		* [https://en.wikipedia.org/wiki/Wet-bulb_temperature Wet-bulb temperature]
	{{Template:HeatOverlay_formula_nav}}		{{Template:HeatOverlay_formula_nav}}

Frank@tygron.nl: /* Wet-bulb Temperature formula */

2019-09-20T13:29:21Z

Wet-bulb Temperature formula

← Older revision		Revision as of 13:29, 20 September 2019
Line 14:		Line 14:
	==Wet-bulb Temperature formula==		==Wet-bulb Temperature formula==
	<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659}) + \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 · \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>		<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659}) + \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 · \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>
			<math>T_{w,t} = T_{a,t} \cdot \arctan( 0.151977 \cdot \sqrt{\phi + 8.313659})+ \arctan (T_{a} + \phi) - \arctan(\phi - 1.676331) + 0.00391838 \cdot \phi^{\frac{3}{2}} \arctan(0.023101 \cdot \phi) - 4.686935</math>

	where:		where:
	* T<sub>w,t</sub> is the calculated wet-bulb temperature;		* T<sub>w,t</sub> is the calculated wet-bulb temperature;