The reporter learned from the China Meteorological Administration
March 24, 25 and 26 for 3 days
Geomagnetic activity may occur
One of them could happen on March 25
Moderate or above geomagnetic storms or even geomagnetic storms
Geomagnetic activity is expected to continue until the 26th
Under this influence, the space station may be dragged by the atmosphere to cause the orbital altitude to decrease, the positioning error of satellite navigation equipment to increase, aviation flight will face the dual risk of deterioration of the communication environment and radiation across the polar region, for the public, especially pigeon players and aurora enthusiasts, in the next few days to always pay attention to space weather information.
The coronal mass ejection (CME) process took place almost directly opposite the Earth, so that the eruption forms a circular surface, which is what we have previously referred to as a "total halo". The solar material ejected by such explosive activities is fast and covers a high degree of coverage relative to the Earth, which may cause relatively strong geomagnetic activity. From the point of view of watching the aurora show, aurora lovers will see a beautiful sight, and from another point of view, for the majority of carrier pigeon players, it is necessary to minimize adverse weather conditions and long-distance driving activities in the coming days.
【Related Links】The December 2023 geomagnetic storm brought auroras to many places
On December 1, 2023, according to the early warning issued by the Space Weather Monitoring and Warning Center of the China Meteorological Administration, geomagnetic storms may occur on the mainland on December 1 and 2, of which geomagnetic storms above moderate or even geomagnetic storms may occur on December 1.
On the evening of December 1, red and green aurora appeared in Mohe Arctic Village, Heilongjiang Province. According to the official Weibo account of China's National Geographic Channel, on the evening of December 1, some netizens photographed the aurora in Huairou, Beijing, which is the second aurora image record in Beijing's history.
What is a geomagnetic storm?
As the most typical solar eruption activity, a coronal mass ejection process can throw hundreds of millions of tons of solar material off the surface of the sun at a high speed of hundreds of kilometers per second, not only the kinetic energy of the huge mass and velocity convergence, but also the powerful magnetic field energy of the sun, once it hits the earth, it will cause a change in the direction and magnitude of the geomagnetic field, that is, a geomagnetic storm.
With the gradual intensification of magnetic storm activity, the Earth's upper atmosphere is continuously heated, and then expands and spreads into higher space, which creates additional drag for the spacecraft to fly in orbit, resulting in a deceleration effect similar to dragging, reducing the orbital altitude of the spacecraft, and the reduction of altitude corresponds to a denser atmospheric environment, which will further bring greater flight resistance, so that the flight speed is slowed down - the altitude is reduced - the drag is greater - further deceleration - The vicious circle of faster altitude reduction poses a great threat to the safety of spacecraft.
For more ordinary people, the most intuitive experience of a strong geomagnetic storm is that the auroras are more likely to be seen at high latitudes (to be precise, the higher magnetic latitudes around the magnetic poles), and as the flow of energetic particles expands towards the equator, many mid-latitude regions, including the northern part of the continent, can also see the aurora.
(Source: Zhumadian Daily)