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13 January, 12:16

Surface temperature of 25 ∘C, which is 15 ∘C higher than the middle-latitude city mentioned in Part A. Vertical soundings reveal an environmental lapse rate of 6.5 ∘C per kilometer and indicate that the tropopause is encountered at 16 kilometers. What is the air temperature at the tropopause?

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  1. 13 January, 12:24
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    at an altitude of 16 kilometers the temperature of tropopause is - 79° C.

    Explanation:

    Given that:

    The surface temperature = 25° C

    Vertical constant environmental Lapse Rate (Change in temperature with height) = 6.5° C/km

    Altitude of tropopause = 16 kilometers

    It is pertinent to understand that as we move higher up to the tropopause; temperature decreases.

    SO; we need to subtract the change in temperature from surface temperature

    Thus; Air temperature at tropopause = Surface temperature - (Change in temperature till the altitude of tropopasue)

    Air temperature at tropopause = Surface temperatue - (Lapse Rate * Altitude)

    Air temperature at tropopause = 25° C - (6.5 ° C/km * 16 km)

    Air temperature at tropopause = 25° C - 104° C)

    Air temperature at tropopause = - 79° C

    Thus; at an altitude of 16 kilometers the temperature of tropopause is - 79° C.
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