give reason as we go higher the vapour holding capacity of air will decrease
Answers
Answer:
The capacity of air to hold moisture is determined by its temperature. The holding capacity increases as the temperature rises. The air becomes cooler as we ascend higher in the sky. As a result of this rule, the air's vapour holding capacity decreases as we go higher.
Explanation:
The ability of the air to hold water is greatly influenced by its temperature (i.e. the more warmer the air is, the more water it can hold). When the air reaches its maximum water-holding capacity, also known as the dew point, at a given temperature, it is said to be saturated.
The ratio of how much amount of water vapour is in the air to how much amount of moisture the air will retain when saturated is called relative humidity (RH), and the vapour pressure deficit (VPD) is the difference between the two.
The water-vapour content of the atmosphere varies from place to place and over time because the temperature determines the humidity-holding capacity of the air.At 30 °C, for example, a volume of air can contain up to 4% water vapour. It cannot, however, carry more than 0.2 per cent at -40 °C.
As air temperatures rise, the ability of the air to retain moisture increases. At 80 degrees Fahrenheit, the air capacity increases to 21,537 g/kg of water vapour.
As we rise in altitude, the air becomes cooler. As a result of this rule, the capacity of the air to hold vapour decreases as we go higher in altitude.
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