 The thing that I'd like to bring your attention to next is the interactions between natural variability and the anthropogenic change that we're seeing in the temperatures. So there's an animation that you'll be seeing very shortly which identifies the temperatures that go across the global land surfaces that go back to the 1880s and they go almost to present day and we look at the monthly temperatures for each of those years and we also compare those temperatures against an average so what we would call a climatology. For every January monthly average temperature we compare that with an average over maybe a 30, 40 or 60 year period. So if that particular year is warmer than that average period or that climatology we say that's a positive anomaly. And if it's colder then we talk about a cold anomaly. So in the animation what you'll see is that once the animation starts we have monthly temperature anomalies and in the earlier part of the record starting in 1880 we have a sort of equal number of hot months and cold months. But there is a lot of variability that's occurring because of all of these natural processes that are going on. But what you'll see is as you move through the sort of 1920s, 1930s, 1940s you start to see that the number of cold anomalies actually disappears. So when we get to 1996, from 1996 through to the end of this particular record which I believe is at the end of 2018 there's only one actually, one cold monthly anomaly through that entire record from 1996. And when we look at the size of those anomalies, so how different, how much larger are they than that long-term average? Over the most recent record some of these months are actually almost 2 to 2.2 degrees warmer than that average monthly record. So quite clearly we're starting to see the anthropogenic signal interact with the natural climate variability but clearly that there is this warming trend that's going on.