The % of water vapor is called Humidity. The attached link will give you more information.
12,900 water vapor in the air.
The water vapor condenses.
Troposphere. This is the lowest section of the earths atmosphere that contains 75% of the earths atmosphere by mass and 99% of the earths water vapour. This section of the atmosphere starts at the surface and extends 7-20km up, the thickness depending largely on where you are in the world.
It goes into the atmosphere as part of the water cycle.
The water is not so abundant in the atmosphere and is very variable (o-1 %).
Nitrogen, Oxygen, Carbon Dioxide, and Water Vapor
The water vapor condenses.
The Troposhere has the most water vapor then any other layer in the atmosphere.
Troposphere. This is the lowest section of the earths atmosphere that contains 75% of the earths atmosphere by mass and 99% of the earths water vapour. This section of the atmosphere starts at the surface and extends 7-20km up, the thickness depending largely on where you are in the world.
Evaporation from the ocean
It goes into the atmosphere as part of the water cycle.
The water is not so abundant in the atmosphere and is very variable (o-1 %).
Nitrogen, Oxygen, Carbon Dioxide, and Water Vapor
Upper Part
c water vapor
0% (at -44 degrees F) to 4% (at 86 degrees F). It's produced from the evaporation of liquid water, and is invisible. Almost all of it is contained in the troposphere. It's the condensation of water vapor that forms clouds, rain, snow, and other precipitation.
0 to 4 percent
The Earths surface would be much colder than it is.