by There are currently more than 9,000 satellites that are circled over the head, pursue the weather, facilitate communication, support navigation and monitor the earth. There could be more than 60,000 by 2040. A new study shows that the emissions of expired satellites, when they fall on earth and burn, will be important in the future years, which affects the relaxation and climate of ozone hole.
Satellites must be replaced after about five years. Most old satellites are disposed of by reducing their height and letting them burn while falling, and releasing the pollution into the earth’s atmosphere such as aerosolise aluminum. In order to understand the effects of these growing emissions of expired satellites, the researchers simulated the effects that are associated with an annual publication of 10,000 tons of aluminum oxide by 2040 (which is estimated by a fleet of 60,000 satellites, which is estimated by the disposal of 3,000 satellites per year).
The results published in the Journal of Geophysical Research atmospheres show that the re-entry material accumulates in high latitudes and to temperature anomalies of up to 1.5 ° C in the middle to upper atmosphere, a reduction in wind speeds and the ozone deviation that the ozone hole recreation could be. Other metals, including titanium, lithium, iron and copper, are also released and their effects still have to be modeled.
