An analysis of thermal stress of climate in Hong Kong

Yuk Yee YAN*

*Corresponding author for this work

    Research output: Contribution to journalJournal articlepeer-review

    8 Citations (Scopus)


    The universal scale of apparent temperature (AT) and clo, a unit measuring the amount of clothing insulation required to maintain comfort, were used to examine the weather stress in Hong Kong. Hourly AT and clo values were computed using hourly air temperature, wind speed, vapour pressure and cloud cover data from 1980 to 1994. Results of both AT and clo reflected highly corresponding changes of thermal stress. It is found that the most stressful time in winter and summer occurred in the early morning and afternoon, and cool weather and tropical ensembles were required to surmount the extreme weather stress respectively. A greater percent of time with severe heat stress than those with extreme cold stress was discovered. These results also indicated that clo is a more informative weather stress index than AT since it provides both the thermal stress and clothing requirements to sustain comfort.

    Original languageEnglish
    Pages (from-to)210-217
    Number of pages8
    JournalSingapore Journal of Tropical Geography
    Issue number2
    Publication statusPublished - Dec 1997

    Scopus Subject Areas

    • Geography, Planning and Development
    • Earth-Surface Processes


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