Applications of a universal thermal index: physiological equivalent temperature

Area of Science:

• Human-biometeorology
• Environmental science
• Urban planning

Background:

• The physiological equivalent temperature (PET) is a thermal index based on human energy balance.
• PET is suitable for evaluating the thermal component of various climates.
• Its degree Celsius unit enhances comprehensibility for non-specialists like urban planners.

Purpose of the Study:

• To discuss applications of the PET index.
• To evaluate thermal conditions in urban heat islands and forest microclimates.
• To demonstrate PET's utility in bioclimatic mapping.

Main Methods:

• Calculating PET based on human energy balance.
• Analyzing temporal PET data through graphs.
• Mapping spatial PET distribution using bioclimatic maps.
• Applying PET to urban heat island studies in temperate and high-altitude warm climates.
• Assessing the thermal microclimate within a deciduous forest's trunk space.

Main Results:

• PET provides a physiologically relevant and easily understandable thermal assessment.
• Applications include evaluating urban heat islands and forest microclimates.
• Bioclimatic maps effectively display the spatial distribution of PET.
• A bioclimatic map for Greece in July exemplifies Mediterranean climate thermal conditions.

Conclusions:

• PET is a valuable and comprehensible thermal index for diverse environmental and urban applications.
• Its graphical and mapping capabilities facilitate clear communication of thermal data.
• PET aids in understanding climate-specific thermal stress and comfort levels.