依据气候规律,从五月中旬开始,我国多数地区开始进入夏季,也即通常所说的初夏。这一时节近地层大气延续了春季潮湿的特点,降水也偏多,常常给人一种湿漉漉的感觉。又因为随着气温的升高,大气对流活动越来越频繁,而在雷电、降水之前,气压常常较低(尤其是午后),给人一种憋闷的感觉。 According to the laws of the climate, from the middle of May, most of China started to enter the summer, which is commonly referred to as early summer. The near-surface atmosphere of this season continued the spring damp characteristics, precipitation is also more, often giving a feeling of wet. And because as the temperature rises, atmospheric convection activities are more frequent, and in the lightning, precipitation, pressure is often low (especially in the afternoon), giving a sense of oppressed.