Answer :

The environment temperature at an initial elevation can be determined using the environmental lapse rate, which is a decrease of 3.6°F for every 1,000 feet gained in elevation. Without the exact temperature at the upper elevation, an exact temperature at the initial elevation cannot be provided.

To determine the environment temperature at a given elevation, we can use the principle of the environmental lapse rate. The lapse rate tells us that temperature decreases by an average of 3.6°F for every 1,000 feet gained in elevation.

Step-by-step calculation

  1. First, calculate the temperature difference over the desired layer: 2,000 feet (7,000 ft - 5,000 ft).
  2. Apply the environmental lapse rate: 3.6°F decrease per 1,000 feet. For 2,000 feet, it will be 3.6°F x 2 = 7.2°F.
  3. Compute the temperature at the initial elevation (5,000 feet) by adding the difference to the known temperature at 7,000 feet. Assuming we know the temperature at 7,000 feet, we can subtract 7.2°F from it to find the temperature at 5,000 feet.

Without the actual temperature at 7,000 feet, we cannot provide the exact number; however, if we had a reference temperature at a known elevation, we could use these steps to calculate the temperature at any other elevation within the troposphere, where the normal lapse rate applies.

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Rewritten by : Barada