In June of this year, why did Dalian "the rain has been down"?

"Rain is so diligent ..." In June this year, citizens generally felt that "the rain kept down", and there were not many days that could see the sun. So, from the perspective of meteorological monitoring data, what changes have rainfall in June compared with the same period of the same year?

The rainfall is 1.1 times more than the same period of the year

"In the impression, there have been no rain in June for so many years." Ms. Wu, a citizen, said that the rain was more diligent in June this year, and it also ushered in a heavy rainfall at the end of the month. At the same time, there were not many weather in the sun. Ms. Wu asked questions. Why did Dalian always rain in June this year?

Feng Chengcheng, chief forecaster of Dalian Meteorological Observatory, told reporters that since June, the Northeast Cold Vortex Systems have frequent activities, affected by it, and the rainfall process is more. From June 1st to June 28th, the city's average rainfall was 143.6 mm, which was 1.1 times more than the same period of the same year (69.1 mm), and 2.3 % more than the same period last year (116.5 mm).

Under normal circumstances, the cold vortex of the Northeast is more active in June. At the same time, the influence of the warm and humid airflow in the south further advances to the north. The Dalian area is exactly within the intersection of the dry cold air guided by the warm and humid air and the cold vortex. The conditions of the atmospheric layer are prone to showers or thunderstorms.

The temperature is lower than the same period of the year 0.4 ℃

Since the night of June 25, the rainfall in Shandong has broken the historical pole value in June; recently, the average rainfall of Jilin Province has also set a historical value since 1951. From the perspective of the overall climate, is this situation related to Dalian's recent rainfall? Feng Chengcheng said that the heavy rainfall in the above areas and the heavy rain to heavy rain on June 27 in Dalian area occurred under the influence of the same weather system. The main impact of this strong rainfall is a high -altitude slot and ground cyclone that has a sub -high -end. They provide abundant water vapor and power conditions for the heavy rainfall; The intersection of high -peripheral warm and humid air has stimulated large unstable energy and further improves the efficiency of rainfall.

Feng Chengcheng said that in June, as the warm and humid air flowed north, it met with the cold seawater in the sea area around Dalian (especially the northern waters of the Yellow Sea), which was easy to form flat fog and affect the Dalian area. The flat fog is relatively long for a long time. Under the influence of the fog, the Dalian region "can see the sun" less time and the temperature will be lower.

As of June 28, the average temperature of the city was 20.0 ° C, which was 0.4 ° C lower than the same period of the same year (20.4 ° C), which was 0.1 ° C lower than the same period last year (20.1 ° C).

It is expected that the rainfall is more than two or three % more than two or August

Feng Chengcheng said that based on the current climate prediction results, it is expected that the average rainfall in Dalian is 20 % to 30 % more than the same period of the same year, and the average temperature may be higher than usual. However, due to the long time of climate prediction and a relatively large uncertainty, it is hoped that citizens will pay more attention to nearby weather forecasting, early warning and rolling.

Feng Chengcheng reminded that when heavy rainfall occurs, citizens should minimize going out; when going out, pay more attention to prevent geological disasters (floods and landslides, mudslides, etc.), slippery and low -lying road sections of the road, etc. Situation; when the weather occurs, try to avoid outdoor activities as much as possible, and pay attention to the adverse effects of strong weather, high -altitude operations, and water operations.

Peninsula Morning Post, 39 -degree video chief reporter Man Wenfei

- END -