Jonathan Thomason Salford Quays
In Polar air, there is little radioactive background count! What there is comes from the sun and space!
At the deserts, there is little plant growth, so no real isotope difference from Polar air! But it is moist.
All the water molecules collide, leading to H on H events. We get nuclear fusion from the Hs, to form He! So the extra O goes on to form O3 – ozone.
Molecular nuclear fusion also produces so much heat! Which is why Polar air is so cold, equatorial air so hot.
We also get this in the arable country side, at water falls and with breaking waves, and deep ocean currents, where we also see molecular nuclear fusion.