Climate Change and Climate Disaster

Satellite Monitoring of Wind chill Hazard and Its Impacts on Military activity in Iran

Document Type : Original Article

Authors

Hojatollah Pashapoor 1
Hasan Rezaii 2
behrooz abad 3

1 Studies Department, Faculty of Basic Sciences, Imam Ali Military University, Tehran, Iran.

2 Assistant Professor of Geography, Imam Ali (AS) Military University, Tehran, Iran

3 teacher in education and training

10.30740/cccd.2025.737317
Abstract
The wind chill index expresses the degree of real cooling sensation created in the human body, and if this cooling exceeds a threshold it will cause the occurrence of wind chill hazard. The aim of this research is satellite monitoring of wind chill hazard in Iran. In this first step, daily wind speed and air temperature data in the period 1994-2023 for 11,000 days with a spatial resolution of 0.25 by 0.25 degrees of arc were extracted from the ECMWF website. Then, the wind chill index was calculated separately for each day based on the American-Canadian formula. Based on this formula, 3 risk classes were defined for the Wind chill index. The first class was positive values ​​of the Wind chill index, which were without risk. The second class was values ​​between 0 and -9 of the Wind chill index, which were low risk, and the third class was values ​​between -9 and -27 of the Wind chill index, which were named as medium risk. The findings showed that the risk of Wind chill in Iran only occurs in the months of November, December, January, February, and March. This is because in the rest of the year the weather does not cool much and consequently Wind chill will not occur. The findings also showed that due to the prevailing cold conditions at high altitudes, the greatest extent of the risk of Wind chill in the studied region also occurs in the Zagros and Alborz highlands.

Keywords

Hazard
Wind chill
ECMWF
Iran
Subjects

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