Analysis!What caused a rare heavy rain in the Korean capital circle?Intersection

On the evening of August 8th local time, the South Korean capital circle (including Seoul, Gyeonggi, and Incheon) encountered the "strongest" heavy rainstorm process in 80 years, causing severe waterlogging. In many local cities, water has accumulated, subway stations and underground facilities have serious water in, and a large number of vehicles are flooded. Landscapes appear in many areas. According to statistics from the Central Disaster Security Countermeasures of South Korea, as of 6:00 on the 10th, the heavy rainfall had killed 9 people, 7 disappeared, and 17 injured.

Local meteorological data show that the maximum precipitation of 1 hour on the 8th of the South Korean Meteorological Agency reached 141.5 mm, 3 hours to 259 mm, and 303.5 mm in 6 hours. The South Korean Meteorological Agency said that the precipitation has set a new record since the development of Meteorological Observation.

On August 8th, a market in a market in Fichuan City, Gyeonggi -do, South Korea was flooded from Korean media due to heavy rain.

So

What are the causes of heavy rainstorms in the South Korean capital circle?

What is the connection with the recent extreme weather events in the world?

The reporter interviewed this

Zhou Ningfang, chief forecast at the Global Meteorological Office of the Central Meteorological Observatory

Zhou Ningfang, chief forecaster of the Global Meteorological Office of the Central Meteorological Observatory, interpret the process of Korean heavy rain

Cause: Northeast Cold Vortex and Deputy High "Strong Joint Joint Joint"

Zhou Ningfang analyzed that this heavy rain process occurred in a specific weather situation.

""

First of all, in the northeast of my country, there is a significant and strong northeast cold vortex. The vortex system continues to "throw" cold air to continue to south and affect the Korean Peninsula.

At the same time, the subtropical high pressure of the Western Pacific Ocean is stronger than the same period of the same year and north, which is conducive to warm and humid monsoon to continuously transport water vapor to the Korean Peninsula.

"

On the 8th local time, a residential area of ​​a residential area in Pozhou, Gyeonggi -do, South Korea was drowned from the Korean media

The "extremely strong" cold and cold air flow in the Seoul area is the direct cause of this extreme rainstorm. In addition, the Korean Peninsula surrounded by sea water steam on three sides, the stable movement of the ring flow, the slow movement of the water vapor transportation intensity and long duration, etc., resulting in this rainfall intensity exceeding expectations.

The South Korean Meteorological Agency said that the country's large -scale heavy precipitation weather will continue until the 12th. Zhou Ningfang introduced that from the later forecast, as the eastward movement of the cold vortex of the Northeast weakened, the precipitation process on the 12th became over, but in the next 10 days, there will be two obvious precipitation weather process in the Korean Peninsula. Risk is still greater.

Analysis: Similar to the reason for the recent rainfall in northern my country

In fact, there have been strong precipitation weather in North China, Northeast China and other places in my country, especially from August 8th to 9th, the precipitation process in North China and Northeast China is not weak. Zhou Ningfang said that this round of precipitation in the South Korean capital circle is caused by the same weather situation in the same weather as my country. The basic causes are caused by the cold air and the warm and humid airflow brought by the cold air from the cold vortex of the Northeast.

The Hanjiang Diving Bridge is completely drowned by the flood from the Korean media

Zhou Ningfang said:

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In this kind of strong summer and cold airflow, the precipitation caused by the system of stability and continuous supply of energy will lead to long -lasting duration and strong territory. The risk of disaster cannot be underestimated.

"

A submerged picture of a subway station in Seoul comes from the Korean media

Related: What is the world's frequent extreme weather?

Looking at the world, there have been frequent incidents in many places in the northern hemisphere recently. In the history of Europe, the "hottest July" in history, the temperature of many countries broke through the historical extreme value, and Portugal once appeared at 47 ° C at high temperature; extreme precipitation appeared in Niigata and Yamagata County, Kentucky, and Japan in the United States; rare rain floods appeared in the Middle East desert areas. In our country, since the flood in the flood, on the one hand, the amount of precipitation in many places has broken the historical record; on the other hand, high temperature heat waves have also pushed more temperatures above 40 ° C. value.

Citizen in Seoul Sitting on the roof picture comes from Korean media

Analysis of Zhou Ningfang:

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Recently, the frequent frequency of global extreme events is caused by abnormal distribution of the global weather circulation system. From the perspective of the upstream and downstream effects of the atmospheric circulation, there is a certain connection and mutual influence between these systems, and the deeper reasons are related to the global climate warming."

Produced by China Meteorological News Agency

Author: Yang Shenglan Zhou Yu Duan Hao Shu

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Expert Consultant: Zhou Ningfang, Chief Predator, Global Meteorological Office of the Central Meteorological Observatory

Edit: Brush

Review: Duan Haoshu

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