Meteorologymedium#111
The environmental lapse rate (ELR) is:
A
Always 2°C/1000 ft
B
The actual measured lapse rate at a given time and place
CorrectC
The same as the DALR
D
A theoretical constant
Explanation
The ELR is the actual temperature lapse rate measured in the atmosphere at a particular time and place; it varies continuously.
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