Mean annual rainfall refers to the average amount of precipitation that an area receives in a year. It is typically measured in millimeters or inches and includes all forms of precipitation, such as rain, snow, sleet, and hail.
This measurement is crucial for understanding the climate of a region, as it indicates how wet or dry an area is over the course of a year. Mean annual rainfall can help in various planning and management activities, such as agriculture, water resource management, and urban planning.
To calculate the mean annual rainfall, you would add up the total precipitation for each month over a year and then divide by 12. This gives you a consistent figure that can be compared across different regions or times.