Explain types of rainfall. please answer this question please
Answers
Explanation:
The types of rainfall based on intensity can be classified as: Light rain – Rate of rain varies between 0 to 2.5 millimeters. Moderate rain – Rate of rain varies between 2.6 millimeters to 7.6 millimeters. Heavy rain – Rate of rain is beyond 7.6 millimeters.
There are three different types of rainfall:
- relief.
- convectional.
- frontal.
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Condensation and precipitation
Types of rain
Cyclone and devastation
Precipitation: Evaporation causes the formation of water vapor and condensation causes the formation of droplets of water. Condensation occurs when the water vapour cools on rising. Clouds are masses of such water droplets. When theses droplets become too heavy to float in the air, they come down as precipitation. Precipitation can be in the form of: Rain, Snow, Sleet or Hail.
Precipitation that comes down to the earth in the liquid form is called rain. Most of the ground water comes from rain. Plants help in preserving water. A rain gauge measures the amount of rainfall. When trees are cut in the hilly areas, rain water flows down and floods the low lying areas. Now it is clear why we should not cut trees and strive to plant more and more of them.
On the basis of the mechanism, there are three types of rainfall, as shown below.
Convectional Rainfall
Cyclonic Rainfall
Orographic Rainfall
Convectional Rainfall
convectional rainfall
When a portion of the earth becomes heated more than its surrounding, it creates significant amountof evaporation. Convection currents then push up the moist air and cumulonimbus clouds are formed. These clouds result in convectional rainfall. Convectinoal rainfall is in the form of showers with rapidly changing intensity. This type of rainfall happens for a short duration because horizonatl expanse of a cumulonimbus cloud is small.
Cyclonic Rainfall or Stratiform Rainfall
cyclonic rainfall
This type of rainfall is formed by frontal system surrounding extratropical cyclones. Cyclone is formed when warm air meets cold air. Stratiform rainfall usually occurs from nimbostratus cloud.
Orographic Rainfall
relief rainfall
Orographic rainfall occurs when a mass of air is pushed up because of a structure with very high elevation; such as a mountain. The lifted air cools down and precipitation occurs. Rain shadow area is formed on the other side of the elevation.