I read an article about the CERN large hadron collider in which it talks about the magnetic field that is generated while the LHC is operating. A magnetic field more than 100,000 times more powerful than the magnetic field of the centre of the earth is generated. Could this greater magnetic field effect the equilibrium of our atmosphere , and what effects , if any, could occur ?
The magnetic field at the center of an LHC magnet may be very strong, but the strength of the field drops very rapidly as you move away from it. By the time you're more than about a meter away from the magnet, the field is undetectable. These magnets don't have any effect on the surrounding environment. The worst thing these magnets could do is damage electronic devices that get too close.
I work for a company that builds similar magnets. Below is a graph of the strength of one of the magnets we've built.
The horizontal axis is the distance from the center of the magnet. The vertical axis is the magnetic field in a unit called Gauss. Earth's field is about 0.5 Gauss, so the center of this magnet produces a field over 10,000 times as strong as Earth's. But, at 30 cm (1 ft) from the center, the field is already 10 times weaker. By the time you're a few feet away, the magnetic field is undetectable.