All through our atmosphere water vapor is present as an invisible gas. Through evaporation from the oceans about 90% of this water vapor joins the earth’s atmosphere. As the ocean waters get heat from the sun, a part of the water transforms from a liquid to a gas and in the warm water that gas rises.
While the sun heats the water, more rapid movement of the water molecules starts. A number of these rapidly moving molecules succeed in detaching themselves of the water below and as water vapor they run away.
But the capacity of air to hold water vapor is not unlimited. On the air temperature depend how much it can hold. For warmer air the capacity to hold water vapor is more. As the limit it reaches no more water vapor it can hold, that is, it is saturated, or the saturation point it has reached. Beyond this stage, the water vapor will start coming back to liquid form through condensation.
When the water vapor starts condensing that very temperature point is known as the dewpoint here. For the condensation process dirty air formation above ground level is the need really. Particles like dust, salt, and suspended pollutants fill in the atmosphere we...
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