What is the air temperature at an altitude of 3.5 km if at sea level it is + 22 ° C?

The vertical temperature gradient (Δt) is the amount by which the air temperature changes with height.
Δt = 6оС / 1 km or 0.6оС / 100 m altitude
1) 3.5 km × 6оС / km = 21оС – temperature difference
2) + 22оС – 21оС = + 1оС – temperature at an altitude of 3.5 km
Answer: at an altitude of 3.5 km, the air temperature is + 1oC.

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