Meteorologyeasy#107
The ISA temperature lapse rate in the troposphere is:
A
1°C / 1000 ft
B
2°C / 1000 ft
C
1.98°C / 1000 ft (6.5°C / km)
CorrectD
3°C / 1000 ft
Explanation
The ISA standard lapse rate is approximately 1.98°C per 1000 ft or 6.5°C per km in the troposphere.
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