METEOROLOGY – URFACE TEMPERATURE & THERMAL COMFORT CALCULATOR
Globe Temperature
A precise tool.
What is the Globe Temperature & How does it work?
The globe thermometer is a device used to measure the temperature of the air near the ground, which is influenced by both solar radiation and air temperature. It consists of a black sphere that absorbs solar radiation and a thermistor or other temperature sensor inside the sphere.
The temperature measured by the globe thermometer can be used to assess thermal comfort conditions. High temperatures as measured by the globe thermometer indicate poor thermal comfort, especially in urban areas with high heat islands.
The temperature measured by the globe thermometer can be used to assess thermal comfort conditions. High temperatures as measured by the globe thermometer indicate poor thermal comfort, especially in urban areas with high heat islands.
T_g = frac{1}{2} (T_a + T_s)
T_g = Globe Temperature, T_a = Air Temperature, T_s = Surface Temperature
Parameters
Result
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Frequently Asked Questions
What is a globe thermometer used for?
A globe thermometer measures air temperature near the ground, influenced by solar radiation and air temperature, to assess thermal comfort conditions.
How does a globe thermometer work?
It consists of a black sphere that absorbs solar radiation and a thermistor or other temperature sensor inside the sphere to measure the temperature.
Why is the sphere black in a globe thermometer?
The black color helps it absorb more solar radiation, providing a more accurate measurement of air temperature near the ground.
What does high temperature indicate as measured by a globe thermometer?
High temperatures indicate poor thermal comfort conditions, especially in urban areas with high heat absorption from buildings and surfaces.
Can a globe thermometer be used indoors?
While primarily used outdoors to measure air temperature near the ground, it can also be used indoors for specific applications like assessing indoor thermal comfort or measuring radiant temperatures.
What is the difference between a globe thermometer and a regular thermometer?
A globe thermometer measures air temperature near the ground, influenced by solar radiation, while a regular thermometer typically measures ambient air temperature without considering solar effects.
How accurate are globe thermometers?
The accuracy of a globe thermometer can vary depending on factors like calibration and environmental conditions. They are generally reliable for assessing thermal comfort but may not be as precise as specialized scientific instruments.
Results are for informational purposes only and do not constitute professional advice.