Enter the main rainy season in advance at the end of June, and 23 days a month and a half of the rain ... Why is there a lot of rain in Qingdao this summer?

Qingdao Daily/Guanhai News July 14th. In the middle of the night, a heavy rain was accompanied by lightning and thunderous pouring. The short -term heavy precipitation caused severe water accumulation in some sections, floods and reservoirs soaring in the river. From July 12th to 13th, there was a strong convective weather in our city, and heavy rains or even heavy rain in the central and southern regions were also monitored to 6503 lightning. Thunderbolt like this is the strong convection weather in the stack of heavy rain, and Qingdao has frequently appeared since late June. Especially since July, it has been raining in 9 days in 14 days. It really feels like Meiyu feels. The main flood season of the northern region (seven or eight "(from late July to early August each year) has been opened in advance? What causes this? How will the next climate situation develop?

In the same period of 71 years, the amount of precipitation is the second most during the same period

This year's summer is particularly more rainy, which is the general feeling of Qingdao citizens. According to the monitoring data released by the Municipal Bureau of Culture, since the flood (June 1-July 14), the city's cumulative precipitation has a total precipitation of 369.2 mm, 216.8 mm more than the same period of the year, and more than doubled. During this period, the number of precipitation reached 23 days. Among them, 9 days of rain in nearly half a month in July, and the city's average precipitation reached 106.2 mm. In June, the city's average precipitation was 263 mm, and it ranked second in the 71 -year history of the same period in 1952 to 2022.

Not only is there a lot of rain, the rain in Qingdao has also been earlier this year, and frequent rainfall appears in late June. Especially from June 26th to 28th, a three -day strong precipitation process. The average precipitation of the city was 152.8 mm, and the large and medium -sized reservoirs had a total of 49.59 million cubic meters of water, which was equivalent to the library capacity of a Laoshan Reservoir.

But the rainfall in June is only a prelude to the flood season this year. When it comes to the rainy season in North China, the first thing people think of is "seven or eight". From late July to early August each year, North China has the most concentrated precipitation, the strongest strength, and extreme rainfall. The flood prevention has also entered a critical period. For Qingdao, the strong precipitation starting on June 26 has opened this year's main rainy season, 5 days earlier than usual, and "seven below and eight" has become "six below and seven".

Why frequently appear lightning lightning thunderstorms

Meteorological experts analyzed that the morning and evening of the rainy season in North China is related to various factors such as the emergence of the west wind, the position and strength of the subtropical high pressure, and the East Asian summer season. When the subtropical high -voltage north jump time is too early, the summer wind is advanced to the northern my country, and the early establishment of the high -level western wind is conducive to the transmission and maintenance of the water vapor to the north, resulting in early time in the rainy season in North China. Conversely, it is too late, as in mid -July 2020, the sub -height position is south and east, resulting in the rainy season in North China until July 28.

Since the flood season, the city has frequently appeared in the weather in the city. Influenced by the high -edge warm and humid airflow and weak cold air, the lightning thunderstorms came to the island city with heavy rain on July 12, and many netizens used mobile phones to record frequent lightning in the sky. According to monitoring statistics of the Qingdao Meteorological Disaster Defense Technology Center, with the rainfall process, the total lightning occurred 6503 times in Qingdao. Since this year, not only Qingdao, but also the thunderstorms in Shandong Province more than all year round, and the intensity is large. From July 1st to July 2nd, Qingdao monitored the number of lightning more than 2,000 times.

Experts introduced that June to August each year is the most active period of strong convection weather in the north. Thunderstorms also increased. This year, the main rainy season of Qingdao opened in advance.

For Qingdao, which is short of water, it has continued to relieve the long -term drought and increase water storage to major reservoirs. In June, 23 large and medium -sized reservoirs had a total of 67.6 million cubic meters of water, of which the largest water inlet was 12.44 million cubic meters of Laoshan Reservoir. Some small and medium -sized reservoirs exceeded the flood limit water level. To ensure the safety of the reservoir. A heavy rain from July 12th to 13th "sends water" of large and medium -sized reservoirs in the city's large and medium -sized reservoirs, of which the Gaogezhuang Reservoir limited the water level in the super flood. As of 6 o'clock on July 13, the city's 23 large and medium -sized reservoirs (excluding spiny flood beaches) had a total of 439.44 million cubic meters of water. It was almost the number of passenger water cited by Qingdao in recent years, which was 238.148 million cubic meters more than the same period of the year.

Enter the main flood season, the city will make various types of flood control materials in advance

In addition, July and August are the two months of the most precipitation in our city in the city, which can generally account for about half of the total year. It is expected that the average precipitation in the city this year (July-August) is 350 to 390 mm, which is about 10 % more than the same period of the year, and may have a heavy flood condition. At the same time, the number of heavy rains in the past two months is also the largest, which can account for 70%of the total year, so it will still be a critical period for flood prevention in the future.

The National Climate Center is expected to be in the summer of this year. my country ’s climate is generally to deviations. The staged drought and flood disasters are obvious. The extreme weather and climate events are too large, and the climate change in the season is large.

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