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
In which of the following atmospheric layers ozone gas is concentrated?
Ozone layer depletion is a major phenomenon in :
By which layer of the atmosphere the ultra-violet rays are absorbed ?
______ is the uppermost layer of the atmosphere.
The layer of very rare air above the mesosphere is called the _____________.
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