Question
Which of the following is measured on the basis of the actual temperature and wind speed?
The correct answer is
Wind-chill index
Wind-Chill Index Measurement: Temperature & Wind Speed
The correct measure based on actual temperature and wind speed is the wind-chill index. This index quantifies how cold the air feels to humans.
Understanding Wind-Chill
- Definition: The wind-chill index estimates the rate of heat loss from exposed skin due to the combined effect of low ambient temperature and wind.
- Key Factors: It is calculated using the current air temperature and the prevailing wind speed. Higher wind speeds increase the cooling effect, making it feel colder.
Evaluating Other Options
- Relative Humidity: Measures water vapor content relative to saturation at a given temperature. It depends on temperature and moisture, not directly wind speed.
- Lapse Rate: This is the rate at which atmospheric temperature decreases with an increase in altitude. It relates to vertical atmospheric structure, not surface wind speed.
- Heat Index: This measures the apparent temperature by combining air temperature and relative humidity. It indicates the risk of heat disorders, focusing on humidity's effect, not wind speed.
Therefore, only the wind-chill index directly uses both actual temperature and wind speed for its calculation.
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Important Questions from Climatology
Consider the following statements about anticyclones :
1. Anticyclones are high pressure systems.
2. Air in the centre of the system must be subsiding.
3. Anticyclones are characterized by converging winds.
How many of the above statements is/are correct?
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- Nisarga, Gati, Nivar, Tauktae and Yaas are names of
Which one of the following is the correct sequence of layers as we move from the Earth’s surface upwards?
Which one of the following is a cold local wind?
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