I know what to use to measure precipitation.

I know that rainfall is measured by a rain gauge.

A, precipitation measurement steps

First, prepare all the equipment for measuring rainfall. The equipment for measuring rainfall in China Meteorological Observatory is a rain gauge designed after comparison and calculation in strict accordance with the definition of rainfall, equipped with a funnel and a glass bottle for collecting rainwater.

When it rains, the rainwater enters the glass bottle along the funnel. After the rain, the rainwater stored in the glass bottle must be immediately poured into the graduated measuring cup. Then read the rain gauge measured by the measuring cup, that is, the rainfall in millimeters.

According to the regulations of China Meteorological Bureau: within 24 hours, it is light rain when the rainfall is between 1 ~ 9mm; The rainfall between 10 ~ 24 mm is moderate rain; Heavy rain occurs when the rainfall is 25 ~ 49 mm; Heavy rain occurs when the rainfall is 50 ~ 99 mm; Heavy rain occurs when the rainfall is between100 and 249 mm; Heavy rain occurs when the rainfall is greater than or equal to 250 mm.

Secondly, briefly introduce the rain tube.

Rain gauge, the overall structure is barrel-shaped metal without corrosion, the inner wall should be smooth and round, and the edge of the water receiver should not have burrs or protrusions. Beautiful and elegant appearance, good weather resistance and longer service life.

The common rain gauge shell is a metal cylinder, which is divided into upper and lower sections. The upper section is a water funnel with a diameter of 20 cm. In order to prevent rainwater from splashing out and keep the area and shape of the container mouth, the mouth of the container is made of straight-edged hard copper. Put a water storage bottle in the lower bucket to collect rainwater. When measuring, pour rainwater into a special rainfall cup and read out the millimeters of precipitation.

In the snow season, take out the water storage bottle and replace it with one without a funnel. Snowflakes can be collected directly in the rain tube and watched after the snow melts. It can also be weighed and converted into millimeters according to the oral area.