What is the significance of 500hpa high field in meteorology?

The 500hPa geopotential height field is of great significance in meteorology.

First of all, 500 HPA isobaric surface is an important part of the middle and upper atmosphere, and many weather processes will leave traces on this surface. Therefore, by studying these imprints, we can predict the future weather changes more accurately.

Secondly, the 500hPa isobaric surface is usually regarded as a non-convergent and divergent layer with good stability and periodicity, which makes its analysis and prediction relatively simple and reliable.

In addition, because 500hPa isobaric surface is an important part of upper-air circulation, the study on it can help us better understand the characteristics and laws of upper-air circulation, thus improving the accuracy and reliability of weather forecast.