AtmosphereWhich one of the following conditions is true for sub-adiabatic lapse rate?ans.ELR ≅ 0DALR = ELRDALR < ELRDALR > ELR
Question
AtmosphereWhich one of the following conditions is true for sub-adiabatic lapse rate?ans.ELR ≅ 0DALR = ELRDALR < ELRDALR > ELR
Solution
The correct condition for sub-adiabatic lapse rate is DALR < ELR.
Here's why:
The Dry Adiabatic Lapse Rate (DALR) is the rate at which the temperature of a parcel of dry air decreases as it ascends in the atmosphere with no exchange of heat with the surrounding environment. The Environmental Lapse Rate (ELR) is the rate at which temperature decreases with an increase in altitude in the atmosphere because the atmosphere's gas molecules are less densely packed.
In a sub-adiabatic lapse rate condition, the environmental lapse rate is less than the dry adiabatic lapse rate. This means that the temperature of the environment decreases slower with altitude than a rising parcel of dry air would. This condition is stable and does not favor the formation of clouds.
So, the correct answer is DALR > ELR.
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