Space weather disasters in space meteorology

Compared with the ground weather, space weather occurs 30 kilometers from the ground. The physical parameters involved in space weather are quite different from those in daily life. The "wind" concerned by space weather is solar wind, and "rain" is charged particle rain from the sun. There is no difference between sunny and rainy weather in space, and the sun and geomagnetic field are divided into "calm" and "disturbance". Space weather doesn't care much about "cold and warm", but pays special attention to the changes of solar ultraviolet and X-ray radiation. The sun is the nearest star to us, and its light Hui Ze reflects everything on the earth. In addition to sunlight, the sun is constantly spraying high-speed charged particles, which is vividly called "solar wind". When the solar wind is very strong, it will produce a veritable "solar storm." When the solar storm hit the earth, we were safe thanks to the earth's magnetic field as a natural barrier. However, when the earth's magnetic field itself bears a "blow" to us, it produces a violent disturbance-magnetic storm. Magnetic storm will induce strong impulse current in human power supply network, which will cause the collapse of transmission network.

During the solar peak year, the strong influence of solar storms is very obvious, which causes catastrophic changes in the space environment and brings great losses to human activities. 1March 1989 13 to 14, the solar storm caused a power outage in Quebec, Canada, and 6 million people suffered from the power outage and were frozen for one day. At the same time, the global radio communication was interrupted, the navigation system of ships and planes failed, the satellite was damaged and shortened, and it fell ahead of schedule. This is a rare space disastrous weather event in history, which shocked the international community. People feel more and more that the sun has its "unfriendly" side, and how the sun affects the earth (the connection between the sun and the earth) and the change of space weather are increasingly concerned.

High-tech represented by space technology is directly affected by space weather changes. In the aerospace field, 40% of satellite failures come from space weather; In the field of national economy, the change of space weather leads to the strong change of magnetic field, which produces induced current, which will destroy the transformer of power system and cause power failure, corrode oil pipeline and cause leakage; In the field of natural disasters, floods, floods, droughts and other natural disasters, the change of the average temperature of the earth and the reduction of ozone content, as well as the relationship between cardiovascular and cerebrovascular diseases, skin cancer and social emergencies affecting human health and space weather are also becoming the focus of many scientists.