Sorry, but there have been more atmospheric nuclear detonations in Earth's atmosphere than you are apparently aware of, each raising the surface radiation load just as much as new ones would, and that level would decay, within weeks, to one indistinguishable from the current one by any radiological instrument you are likely to know about the existence of.
Sorry, but there have been more atmospheric nuclear detonations in Earth's atmosphere than you are apparently aware of, each raising the surface radiation load just as much as new ones would, and that level would decay, within weeks, to one indistinguishable from the current one by any radiological instrument you are likely to know about the existence of.