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Related Experiment Video

Updated: Jul 7, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

Estimating the radiation absorbed by a human.

Natasha A Kenny1, Jon S Warland, Robert D Brown

  • 1Department of Land Resource Science, University of Guelph, Guelph, Ontario, Canada. nkenny@uoguelph.ca

International Journal of Biometeorology
|February 15, 2008
PubMed
Summary
This summary is machine-generated.

Estimating human radiation absorption outdoors is complex. This study compared three methods and found clothing/skin albedo significantly impacts absorbed radiation (R), crucial for thermal comfort research.

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Area of Science:

  • Environmental Science
  • Human Physiology
  • Thermal Comfort Studies

Background:

  • Accurate estimation of human absorbed radiation (R) outdoors is challenging due to complex radiation flux interactions.
  • Understanding R is critical for human energy balance and outdoor thermal comfort research.
  • Skin and clothing albedo significantly influence R, necessitating precise measurement methods.

Purpose of the Study:

  • To assess and compare three distinct methods for estimating human absorbed radiation (R) in outdoor environments.
  • To evaluate the impact of varying skin and clothing albedos (alpha (h)) on R.
  • To provide reliable methods for estimating R crucial for thermal comfort studies.

Main Methods:

  • Field tests were conducted under clear and overcast skies.
  • Evaluated three methods: cylindrical radiation thermometer (CRT), net radiometer, and a theoretical model.
  • Assessed three albedo values: light (0.57), medium (0.37), and dark (0.21).

Main Results:

  • The error range between the estimation methods was 3-8% under varying sky conditions.
  • Skin and clothing albedo substantially impacted R, with changes from 115 to 157 W m(-2) between darkest and lightest albedos.
  • All tested methods provided reliable estimates for absorbed radiation.

Conclusions:

  • The study validated three convenient and reliable methods for estimating human absorbed radiation outdoors.
  • Albedo is a critical factor influencing R, highlighting the need for accurate characterization in thermal comfort assessments.
  • Accurate R estimation is fundamental for advancing outdoor thermal comfort research and human biometeorology.