Because as ever I'm offered a litany of highly questionable statements supposedly adding up to something so obvious that only an idiot could fail to recognize it but when as here, I (proxy 'I' at least) ask to look at the data, I get Dr. Phil Jones from the UK Met Office saying
"We have 25 years or so invested in the work. Why should I make the data available to you, when your aim is to try and find something wrong with it?"
As a doctoral student impressed by Karl Popper's views on science I thought the idea was indeed to try to discover any flaws in theories and the data supposedly supporting them with the goal of making genuine progress in understanding the world.
And of course trillions of dollars are linked to the veracity of that and analogous data. This is indeed a scandal.