Large-scale precipitation and cooling in Shandong

The cooling of large-scale precipitation in Shandong is mainly affected by strong cold air. ?

The precipitation and cooling weather in Shandong province is caused by the combined influence of Jianghuai cyclone and cold air. Jianghuai cyclone refers to a low-pressure system formed or developed in Jianghuai area, which usually brings large-scale precipitation and heavy rain. Cold air refers to the cold air mass moving from high latitude to low latitude, which usually brings cooling and dry weather. When they meet, strong convection and unstable weather will be formed, which will lead to strong winds, rainfall and cooling in Shandong Province.

From the night of April 1 1, there was a large-scale rainfall in Shandong province, with a strong northeast wind and a significant drop in temperature. 12 The precipitation process basically ended in the evening. From June 5438+03 to June 5438+07, the weather in Shandong Province was mainly cloudy and sunny, and the temperature rose slowly.

Shandong province has ushered in a cold spring.

The late spring cold in Shandong province refers to the weather phenomenon that the temperature rises rapidly in early spring (generally refers to the end of February and the beginning of March), but the temperature in late spring cold (generally refers to April) is lower than normal. Long-term rainy weather or frequent cold air intrusion, or under the control of continuous cold and high pressure, strong radiation cooling in sunny nights is easy to cause late spring cold.

The climate in early spring is changeable. If the cold air is strong, the temperature can drop to below 10℃, even in rainy and snowy weather. At this time, it is often sunny during the day, which makes people feel that "warm wind makes tourists drunk", but it is chilly in the morning and evening, which makes people feel "chilly in spring". This unpredictable "fickle" weather is what is commonly called "cold spring". It is easy to adversely affect agricultural production and residents' lives.