On December 1, according to the detection of the Space Weather Center of the China Meteorological Administration, on December 1 and 2, geomagnetic storms may occur in China, of which geomagnetic storms above moderate or even geomagnetic storms may occur on December 1.
On the evening of the 1st, red and green aurora appeared in Arctic Village, Mohebei, Heilongjiang. 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. Starting in December 2019, the Sun enters its 25th cycle of activity, peaking around 2025.
On the evening of December 1, some netizens photographed the aurora in Huairou, Beijing.
Daxinganling area, Heilongjiang Province **Provided by Hao Daqing, An Shichun, Wang Yong.
On the evening of December 1, Zhu Jin, a researcher at the Beijing Planetarium and editor-in-chief of the magazine "Astronomy Enthusiasts", told the Red Star News reporter that the occurrence of the aurora is due to the flow of charged particles (solar wind) from the sun into the earth's magnetic field, and due to the action of the geomagnetic field, these high-energy particles turn to the polar region, and the atoms in the upper atmosphere collide with the atoms in the upper atmosphere at high altitude near the north and south poles of the earth.
Zhu Jin said that although aurora is common in high magnetic latitude areas, if the geomagnetic storm is particularly strong, the range of aurora will expandIt has been recorded that when geomagnetic storms are severe, aurora can be seen even in the equatorial region. Therefore, it is possible to see the aurora in the Beijing area at 40° north latitude.
According to Zhu Jin's recollection, he saw the aurora in Xinglong, Hebei Province in 2003. At that time, there were also reports of aurora observations in Pinggu, Beijing.
As for why auroras also occur in middle and low latitudes, Zhu Jin saidIn general, when the Sun's high-energy charged particles reach the vicinity of the Earth, the Earth's magnetic field directs them towards the Earth's poles. However, if the high-energy charged particles of the sun reaching the earth are particularly strong, and the interaction with the earth's magnetic field produces a particularly strong geomagnetic storm, some high-energy charged particles will enter the atmosphere in the middle or low latitudes, and it is possible to produce auroras in the middle and low latitudes.
In fact, the observation of aurora in the Daxinganling area of Beijing and Heilongjiang Province has been officially issued as a geomagnetic "warning".
The National Space Weather Monitoring and Warning Center of the China Meteorological Administration issued a geomagnetic storm warning on November 30, forecasting that geomagnetic storm activity may occur on November 30, December 1 and 2, of which geomagnetic storms above moderate or even geomagnetic storms may occur on December 1, and geomagnetic activity is expected to continue until December 2.
Under this influence, the orbital altitude of the space station may decrease due to atmospheric drag, and the error of satellite navigation equipment will increaseAviation flights will face the double risk of deterioration of the communication environment and radiation across the polar region, and for the public, especially carrier pigeon players and aurora enthusiasts, it is necessary to pay attention to space weather information in the coming days.
The forecast suggests that the solar eruption is likely to produce a high-intensity and brilliant aurora on December 1, and parts of northern China, such as Heilongjiang and Xinjiang, may see red or even green auroras. It is understood that Mohe City, in the Daxinganling area of Heilongjiang Province, has observed the aurora many times this year.
Zhu Jin explained that when the solar coronal mass ejection or solar flare erupts, this event travels to the earth at the speed of light, and humans can know about 8 minutes after the above-mentioned solar activity. The Sun's stream of charged particles travels much slower, taking about two or three days to reach Earth, so humans can warn of possible geomagnetic storms.
Zhu Jin said that geomagnetic storms will have an impact on short-wave communications, but because they will not last too long, the impact on the human body is small and negligible.
Ren Qiuyu, Wu Wei, Gu Xingyue CCTV News
Zhang Yanliang Red Star News client