The relative humidity can increase or decrease even though the water vapor content doesn't change because:
A)relative humidity is tied to the amount of dry air present in the sample considered.
B)water vapor is a locally conservative property of the atmosphere.
C)relative humidity is directly dependent on cloud cover.
D)relative humidity is temperature dependent.

Question

Quizplus · Accepted Answer

Relative humidity is the ratio of the amount of water vapor present in the atmosphere to the maximum amount of water vapor that can be present at a given temperature. Since the maximum amount of water vapor that the air can hold is temperature-dependent, changes in temperature can affect the relative humidity even if the water vapor content remains constant. For example, warm air can hold more moisture than cold air, so if a parcel of air is warmed without adding or removing moisture, its relative humidity will decrease. Conversely, if the air is cooled without changing the amount of moisture, its relative humidity will increase because the cold air can hold less moisture than warm air.

The Relative Humidity Can Increase or Decrease Even Though the Water