Weather Patterns: Precipitation and Rainfall Distribution
by Yuvi K - December 16, 2023
What is Weather Pattern?
Weather pattern is the study of how air moves around the atmosphere. Weather patterns are linked to the changes of temperature, air pressure, humidity, wind and other elements in the atmosphere. It is the guiding force behind the formation of various weather events, such as rain or snow.
Weather patterns are constantly changing and are never consistent, and this is due to variations in temperature, air pressure, and other atmospheric properties. As a result, the weather can be unpredictable.
What is Precipitation?
Precipitation is the process of water falling from the sky in the form of rain, snow, hail, and sleet. When air contains moisture, the droplets of water vapor become larger as they rise in the atmosphere. When the droplets become too heavy to float, they form clouds and eventually fall as rain or other forms of precipitation.
What is Rainfall Distribution?
Rainfall distribution is the study of the amount of rainfall that falls in different parts of the world. It is a measure of how much rain is received in various regions across the globe at any given time. The amount of rainfall is typically influenced by climatic factors, such as temperature, humidity, wind direction, and air pressure.
Global Rainfall Distribution
The global average rainfall distribution is between 600 and 1000 millimeters per year, with higher values usually found in the tropical regions of the world. These regions typically have more rainfall because they are located closer to the equator, where the sun is more intense and the air is much warmer.
Rainfall distribution around the world can also vary greatly depending on factors such as geography, air pressure, and wind. For example, the rain shadow effect is a phenomenon that occurs when warm air from the equator is met by cold air from the polar regions, resulting in a dry region in the middle.
Precipitation and Rainfall Distribution in India
In India, the mean annual rainfall distribution varies between 600 and 1000 millimeters, with higher values in the western and eastern parts of the country.
The western part of India typically receives more rain due to the presence of the Western Ghats and the Arabian Sea, which together provide moisture for the area. The eastern part of India receives high levels of rain due to its proximity to the Bay of Bengal.
The amount of rainfall that India receives is greatly affected by climatic processes such as monsoons and cyclones. The Indian monsoon season typically brings heavy rainfall to the country, particularly in the northeastern and central regions.
Cyclones are also known to cause heavy rainfall in some parts of India. These storms are known to bring torrential rains and can cause significant damage to lives and property.
Conclusion
To conclude, weather patterns are constantly changing, and the amount of rainfall varies around the world. In India, the annual mean rainfall distribution generally falls between 600 to 1000 millimeters.
The distribution of rainfall is affected by various climatic processes such as the monsoons and cyclones, which bring increased moisture to certain parts of the country.
Therefore, it is important to understand the weather patterns in different regions in order to plan and prepare for the potential impacts of extreme weather events.
