Climate change and statistics are a much-debated issue. That is because, more in general, statistics tend to predict the future. In the case of climate change, our future looks rather bleak.
To produce climate change statistics is a highly professional job, requiring meticulously applied scientific, mathematical methods. Only very few professionals know the ins and outs of these methods.
This is probably why the United Nations (UN) generated its climate statistics from 130 countries across the globe. The UN also debated the indicators for their climate change statistics with these countries. This bottom-up approach must provide the much-needed trust.