Why is the weather in Changsha so abnormal this year?

1. According to the climate law, Changsha belongs to subtropical monsoon climate, with long winter and summer time and short spring and autumn time. Every spring, the south wind and the north wind will alternately affect this area. When southerly winds prevail, the temperature rises rapidly, and when northerly winds prevail, the temperature drops rapidly, so the weather will be abnormal. Second, in terms of particularity, this year is also the peak of solar activity, and sunspots are more active, which will have a certain impact on the climate. Therefore, the combination of the two will make the weather in Changsha even more abnormal.