Open AccessWindchill at Leh
Author(s) -
Avinandan Mukherjee,
T. RAMANA RAO
Publication year - 1982
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v33i2.3151
Subject(s) - epoch (astronomy) , altitude (triangle) , wind speed , environmental science , climatology , atmospheric sciences , maximum temperature , meteorology , sea level , atmosphere (unit) , geology , physics , geography , physical geography , mathematics , astrophysics , geometry , stars
Windchill, a measure of cooling power of atmosphere for any given condition of temperature and wind, has been calculated for the mountain station Leh, situated in the Himalayan ;mountain range located at an altitude of 3514 m above mean sea level at Lat. 34 deg. 09' and Long. 77 deg. 34'. Based on this an equivalent temperature; which would be felt on exposed human body in a 5 kmph wind -the amount of ventilation in an otherwise calm condition, has been calculated. The daily data for eleven year period of 1958 to 1968 {collected by India Met Dep) were taken and calculations have been done for maximum and minimum temperature epochs. The following conclusions have been anived at:
(1) Windchill is more frequent in maximum temperature epoch with highest frequency October.
(2) Windchill is less frequent in minimum temperature epoch with least frequency in January.
(3) Magnitude of windchill is greater in the minimum temperature epoch.
(4) Wind and temperature are independent so that there is no tendency to increase windchill on coldest month or on the coldest day.
(5) Maximum windchill was found to be 14 deg. C.
(6) In the annual variation, the coldest windchill periods are controlled by wind and the least windchill period by temperature.