Why is the backlog of flights in the capital more serious?

On the last day of the 20 17 10 9 holiday, the Capital Airport suffered the first advection fog this year. 654381From 22: 00 pm on October 8, the visibility of the runway of the Capital Airport dropped rapidly, and the visibility of this airport dropped to 800 meters. A large number of flights returned for alternate flights due to the weather. From 23: 00 to 10, the visibility of the Capital Airport further decreased, and the minimum visibility dropped to125m, so the flight could not take off and land. North China Air Traffic Control upgraded the orange warning mechanism of MDRS to red warning. The controller on duty should strengthen communication with neighboring control units to ensure the safe operation of flights in low visibility.

65438+1At 4 o'clock on the morning of October 9, it began to rain at the Capital Airport, and the visibility gradually improved. From the night of the 8th to the early morning of the 9th, 82 alternate flights returned to the Capital Airport due to the weather. North China Air Traffic Control started the emergency consultation mechanism of the Transportation Management Committee at 6: 00 a.m. on the 9th, and cooperated with the civil aviation units stationed at the Capital Airport to timely adjust the command plan according to the flight operation guarantee. At the same time, strengthen external coordination, do a good job of returning alternate flights to the Capital Airport, and rationally formulate flight bypass plans and flow control measures to ensure the normal operation of flights in thunderstorm weather. 65438+1October 9, all day, the scheduled inbound and outbound flights 1862, of which the scheduled overtime flights 144.

As of 10 in the morning, the Capital Airport has carried out 3 13 flights and cancelled 133 flights. Affected by precipitation and low visibility on the 8th, the flight backlog at the Capital Airport was serious, with many delays and cancellations. North China Air Traffic Control hereby reminds passengers to pay attention to weather changes, pay attention to flight dynamic information in real time, and make travel arrangements in advance. North China air traffic control will do its utmost to ensure the safe travel of the majority of passengers.

Advection fog is a fog formed by warm and humid air flowing horizontally to the cooler underlying surface and the lower part being cooled. Advection fog mostly occurs in winter and spring, mostly in the northern coastal areas. Buildings in the city can be "entwined" among them, making people feel like they are in a fairyland on the ground. Advection fog cannot do without the horizontal flow of air. As long as there is a persistent wind, the fog will last for a long time. If the wind stops and the source of warm and humid air is interrupted, the fog will soon dissipate.