Today's Great Hot Summer Vacation will be more sweltering

Today is the "great heat" in the solar calendar 24 solar terms. The arrival of the summer heat has meant that the weather in most parts of northern China is hotter than the summer heat. Meteorological observations show that the heat period in most parts of northern China is generally more than 10 days after the end of the solar summer and the beginning of the autumn season, that is, after more than a month of indefinite weather. Therefore, there is widespread public opinion that “heat is in the sky”.

According to analysis, the hot weather during this period was closely related to the activities of the Western Pacific subtropical high (abbreviated as "subtropical high"). When it lifts north, stretches west, and controls the North China region firmly, continuous subsidence will prevail in the air over the area, thus making the air dry abnormally. Clear, breezy, and hot are the main characteristics of the weather controlled by the "sub-high".

Some people have asked that in recent days the city has been under the control of "subtropical highs," not only has the air humidity not dropped but has obviously increased, and therefore everyone feels hot and stuffy. How do you say that the air under the subtropical high will be very dry? Meteorologists explained that everyone feels that the humidity in recent days is high because the water vapor from the surface has not risen to high altitude due to the obstruction of high-level subsidence, but it has been caused by the detention near the ground. The reason is that in fact, more than ten meters or more to more than ten kilometers above the sky, and even higher altitude humidity is very small, that is to say, from a whole point of view the city's air humidity is quite small. It is generally believed that the near-ground air layer has high humidity, which only has a great influence on visibility and temperature, but it has a negligible contribution to cloud and rain.

According to the results of the new numerical weather forecast, the weather conditions in this city have changed little in the past three days. Most of the weather is mainly sunny, with little wind and high temperatures. The high temperature on Saturday and Sunday is about 34°C, and the low temperature is About 25 °C, and the air humidity is relatively high, the degree of sultry weather will increase unabated, the public should pay attention to heatstroke cooling.

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