Dr Sam Dean is the chief scientist for climate change at NIWA, he presented a report to Auckland Council yesterday which he refers to as the "encyclopedia" of climate change for Auckland. In it, he details how much hotter and how many more flash floods the region will experience - the number of hot days, (days with temperatures above 25°C), could quadruple and average temperatures increase over the next century. He also has a picture for the rest of the country - and what La Niña could spell for the regions.