Cold Stress at High Altitudes

  • N. C. Majumdar Defence Institute of Physiology & Allied Sciences, Delhi Cantt
  • P. C. Gupta Defence Science Centre, Delhi
Keywords: High Altitudes, Wind Chill Index, Cold Stress Index

Abstract

The problem of cold at high altitudes has been analysed from a purely physical standpoint. It has been shown that Siple's Wind-Chill Index is not reliable because (i) it does not make use of the well established principles governing the physical processes of heat transfer by convection and radiation, and (ii) it assumes that the mean radiant temperature of the surroundings is the same as the ambient dry bulb temperature. A Cold Stress Index has been proposed which is likely to be a more reliable guide for assessing the climatic hazards of high altitude environments. The Index can be quickly estimated with the help of two nomograms devised for the purpose.

Author Biographies

N. C. Majumdar, Defence Institute of Physiology & Allied Sciences, Delhi Cantt
Defence Institute of Physiology & Allied Sciences, Delhi Cantt -110 010
P. C. Gupta, Defence Science Centre, Delhi
Defence Science Centre, Delhi-110 054
Published
2014-02-11
How to Cite
MajumdarN., & GuptaP. (2014). Cold Stress at High Altitudes. Defence Science Journal, 33(2), 147-158. https://doi.org/10.14429/dsj.33.6168
Section
General Papers