[Capt Gideon]

Using the Nuclear Winter model means you also have to take into account that the Ozone Layer will be effectively destroyed by a global nuclear exchange. Computer modeling has shown that even a limited exchange between India and Pakistan involving 50 weapons of less then 100 Kt would throw around 5 million tons of soot 50-miles into the mesosphere. The soot would absorb enough solar radiation to initiate chemical reactions that would break down the stratospheric ozone layer protecting the Earth from harmful UV radiation. This added energy into the Earths atmosphere would work towards heating the atmosphere and heating the surface of the planet. It would also kill every plant and animal not able to adapt to the increased UV radiation present during daylight hours. This is from a 2008 study published in the Proceedings of the National Academy of Science. This means the 1990 projection of a 50% reduction in the ozone layer leading to a 200% increase in UV radiation levels is extremely conservative at best. Projections point to the cooling effect being completely offset within 25 years and global warming resuming.