What is southwest monsoon dry-hot wind?

The hot air in southwest dry season is a kind of dry-hot wind, which is a kind of agricultural disastrous weather with high temperature and low humidity and a certain wind force. Dry and hot winds usually appear in rainy and hot weather from early May to mid-June. At this time, it is in the heading, flowering and filling stage of wheat in North China, Northwest China and Huanghuai area, and the transpiration of plants increases rapidly, which often leads to insufficient filling or even withering and death of wheat.

Form:

In the Jianghuai Basin, the dry-hot wind is generated under the influence of the southwest airflow west of the Pacific subtropical high. The Pacific subtropical high is a deep warm and high pressure system, which consists of warm air from the ground to the sky. During spring and summer, this high pressure stayed over the Jianghuai Basin and then gradually moved northward. Because in the high pressure area, the wind direction is clockwise, so in the west of the subtropical high, the southwest wind is blowing. Located in the north and west of subtropical high, affected by this southwest wind, it produces dry and hot wind weather.