What are the characteristics and distribution of precipitation in the world? What is the device that measures precipitation called?

Precipitation refers to the depth of liquid or solid water that falls from the sky to the ground after melting without evaporation, infiltration or loss, but accumulates on the horizontal surface. It is a measure of the amount of precipitation in a region. So how is annual precipitation and daily precipitation calculated? Do you know?

Contents of this article

1. What are the characteristics and distribution of precipitation in the world?

2. What is the device for measuring precipitation called?

3. How to calculate daily precipitation

What are the characteristics and distribution of precipitation in the world?

Characteristics of the world's precipitation distribution:

1. From the perspective of time distribution:

Year-round rainy areas: both sides of the equator; year-round low rainfall areas: polar regions, desert areas, inland areas; year-round humid areas: 40°~60° north and south latitude, west coast of the continent; summer rainy areas: 30°~40° north and south latitude, east coast of the continent; winter rainy areas: 30°~40° north and south latitude, west coast of the continent;

2. From the perspective of spatial distribution:

Relationship with latitude: precipitation gradually decreases from the equator to the poles; relationship with land and sea location: more precipitation along the coast and less precipitation inland; relationship with topography: more precipitation on the windward slopes in mountainous areas and less precipitation on the leeward slopes.

What is the device for measuring precipitation called?

The device for measuring the amount of precipitation is called a rain gauge. It is made of a watertight iron cylinder with a water container, a funnel and a water bottle inside. It is also equipped with a measuring cup proportional to the diameter of the water bottle. When it rains, rainwater flows into the water bottle through the funnel. When measuring rain, take out the water bottle and pour the water into the measuring cup. The number of scales (mm) read on the measuring cup is the amount of precipitation.

When it snows in winter, take away the funnel and water bottle, and use the snow receiving port and water storage cylinder to collect precipitation directly. When measuring precipitation, take out the water storage cylinder and bring it indoors. After the snow in the cylinder melts, pour it into the measuring cup and read the precipitation number. Whether it is liquid or solid precipitation, the precipitation is the depth accumulated on the horizontal surface without evaporation, infiltration, or loss. This measurement is more accurate, and it is easy to compare with each other, and the total amount can be calculated.

How to calculate daily precipitation

Calculation method for daily precipitation: The 24-hour cumulative precipitation from 08:00 today to 08:00 yesterday is measured with a rain gauge. Pour the rainwater in the rain gauge into a measuring cup and read the value on the scale on the cup as the precipitation for the day.

Precipitation refers to the depth of liquid or solid water that falls from the sky to the ground after melting, without evaporation, infiltration, or loss, and accumulates on the horizontal surface. It is a measure of the amount of precipitation in a region, with mm as the unit, and one decimal place in meteorological observation.