The great cold is the last of the 24 solar terms in a year. Let's talk about the weather characteristics of the great cold solar terms and the curious question: is the weather cold in the great cold solar terms?
1、 Is it cold in the cold solar term
The solar terms of the great cold are cold. The great cold is in severe winter for nine days. The weather is very cold.
In some areas of China, the severe cold is not as cold as the minor cold, but in some years and a few coastal areas, the annual minimum steam temperature will still appear in the severe cold solar terms. Therefore, we should continue to do a good job in preventing cold in crops, and pay special attention to protecting livestock from winter.
2、 Characteristics of cold solar terms
1. In the cold solar term, the atmospheric circulation is relatively stable, and the circulation adjustment cycle is about 20 days. During such circulation adjustment, there are often large-scale rain and snow weather and strong wind cooling. When there is a long wave ridge west of 80 degrees east longitude and a large coastal trough in East Asia, China will experience sustained low temperature under the control of northwest wind flow and the influence of continuously replenishing cold air.
2. Mild cold and severe cold are the periods with the least rain in a year. The annual cold solar term, the rainfall in most parts of South China is only slightly higher than that in the early stage, the rainfall in most parts of South China is 5 ~ 10mm, and the mountainous area of Northwest Plateau is generally only 1 ~ 5mm. South China is dry in winter, the water consumption of overwintering crops is small, and the contradiction between farmland water supply and demand is generally not prominent. However, 'don't complain about the rain and snow in the bitter cold, and the snow will be left to next year's wheat'. Under the condition of scarce rain and snow, timely watering in different areas according to different farming habits and conditions is undoubtedly very good for the growth of spring crops.