 So now we start burning fossil fuels We're going to increase the number of gas molecules that the shortwave and longwave radiation can strike and You can imagine if we increase it to the point like the smoke we had where you couldn't see The incoming radiation is going to have a really hard time getting out although to be quite honest They have a hard time getting in as well. So when we increase carbon dioxide concentrations we By definition will increase the internal energy of the earth atmosphere system and That energy is increased through absorption Reradiation absorption Reradiation and eventually warming up the surface of the earth and that's where we see the increase in temperature with time Now when the energy levels of a system increases it Moves away from its equilibrium position So the earth atmosphere has been in equilibrium During the Holocene and then in around about the 1960s All this extra carbon dioxide and other greenhouse gases in the atmosphere started to impact the system enough That there was enough internal energy for the system to start oscillating and it'll oscillate and then eventually in time it finds its new equilibrium where it does at a very early stage in this whole energy process and what we really seeing at the moment is the Oscillations of the energy and these oscillations are causing changes in local gradients and the changes in local gradients are causing extreme events and It's not that long ago that we had our first major category 5 and Hurricane 1989 Hurricane Hugo 2016 we had hail stones in Crimean earlier this year Hales a hail stone event caused enormous havoc and cost here in Canberra. We're starting to see Supercells these are thunderstorms that are enormous and have such high Uptrafts that the hell stones can get to be very large We're starting to see more tornadoes. We're starting to see oscillations between drought and Flood drought and flood our climate is nowhere near It's new magical equilibrium. It is very much in the oscillation phase So at the moment climate change is really about extremes