Why is the water vapor content in the air higher in summer than in winter?

Affected by temperature, surface water evaporates much more in summer than in winter.

The content of water vapor in the air is directly related to the atmospheric temperature. The higher the temperature, the greater the solubility and content of water vapor. Therefore, the temperature is higher in summer and low latitudes, so the water vapor content is also higher.

Water can be used as a solvent or solute, so can air. Water vapor in the air is a solute and air is a solvent.

Related instructions

The density of water vapor is about 0.622 times that of dry air at the same temperature and pressure, that is, the density of water vapor is always less than that of dry air. The gas constant (Rw) of water vapor is 46 1 Joule/kg. Kai, constant volume specific heat (Cv) is equal to 7 16 Joule/kg. Kay. The water vapor in the atmosphere comes from the evaporation and transpiration of the underlying surface, and its content varies from 0 to 4% by volume, reaching more than 4% in tropical rainy areas and almost zero in cold and dry areas.

Its vertical distribution is mainly concentrated in the gas layer 2-3 kilometers from the ground. The higher the height, the less water vapor. Water vapor is the only component in the atmosphere that can change phase, so it is extremely important in weather changes. Water vapor can strongly absorb ground radiation and emit long-wave radiation, and continuously release or absorb heat in the process of water phase change, so it has a great influence on the temperature of ground and air.