What is radar echo? How do ordinary people understand radar echo?

What is a radar echo map? How can ordinary people understand the radar echo map? What we need to be clear is that radar detects rainfall, so it is not within its scope of responsibility. As the radar returns to the map, we can know the intensity, possible position and moving direction of the rainfall system, which is helpful to predict and convey the "Tianshan Mountain" to us, which also helps the public to avoid heavy rain attacks.

Weather radar chart Weather radar chart refers to the echo image that the weather information detected by weather radar transmits the microwave signal to the drawing radar display. From blue to purple, the echo intensity is from small to large, and the rainfall intensity, rain area, future precipitation intensity and moving range can be judged from the echoes of different colors. Working principle When radar emits electromagnetic waves in the air, it will encounter precipitated particles, which will be partially reflected back. Through a certain calculation method, the density and diameter of precipitated particles can be known. Using these data, you can outline a more complex radar era. Simple skills teach you the national radar puzzle of China Meteorological Data Network.

How to Understand the Radar Map First, we open the China Weather Data Network and find the radar products on the home page. After entering the relevant page, you can see the following pictures. This is a typical radar problem. Color blocks are introduced into the eye window, which represent the areas monitored by radar, and the radar detection radius is as high as 230 kilometers. We can learn about the basic situation of precipitation in China this morning shown on the radar map. The lower right corner is the basic reflectivity (0? 70dBz, dBz is the reflection coefficient unit, the higher the value, the greater the concentration).

It is usually pointed out that the area corresponding to the blue echo is covered by local water clouds, but there is no rainfall, such as the blue area outside the above picture; The green echo area represents light rain, and some parts should be immersed in the rain. China; Yellow areas in the rain; The red area represents heavy rain, and rain is coming; The purple area is relatively strong, which is the largest in this area. It is a rainstorm, and it is more likely to be accompanied by lightning, hail and other weather. I know where it rains, but I'm not entirely sure. Learning to identify the future precipitation trend can completely prevent heavy rain. Simple, observe the trend of dynamic radar. Tell you quietly, you can also see real-time warning information, such as temperature, air pressure and relative humidity, in the weather data of China. Read the original text to experience it.