Within the troposphere, the temperature ‘t’ at an altitude ‘h’ meters above sea level is expressed by (assuming a sea-level baseline of 15°C) ?
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Answer: A. t = 15 – 0.0065h
Explanation
The environmental lapse rate decreases tropospheric temperature linearly with altitude at 6.5°C per kilometer. Assuming a sea-level baseline of fifteen degrees Celsius, altitude multiplies the lapse rate correctly. Subtracting the temperature drop from the baseline yields the correct tropospheric temperature formula. The troposphere is the lowest layer of Earth's atmosphere where weather phenomena occur. Atmospheric pressure and temperature drop steadily with increasing altitude above sea level. The standard environmental lapse rate provides a baseline model for atmospheric temperature gradients.
Meteorologists and aviation engineers use lapse rate formulas to calculate temperatures at various flight altitudes. Understanding atmospheric temperature profiles helps scientists model pollutant dispersion in the troposphere. Environmental science applications rely on standard lapse rates to evaluate lower atmospheric stability. Option B incorrectly adds temperature with altitude, which contradicts the actual tropospheric lapse rate. Option C uses an incorrect numerical coefficient and baseline sign configuration for altitude changes. Option D uses a different coefficient that represents non-standard atmospheric conditions incorrectly.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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