Ask HN: Best Ressources on Climate Change

I would like to educate myself on this topic and play a bit with the data, but I find it quite difficult to find sources. Most sites are very polarized on the topic and offer only conclusions. Given it's literally one of the most important problems on the planet, I was expecting much more 'open source' data with methodologies, explanation of the process, data reliability assessments etc. Would you mind sharing the best (in terms of data, reproducible research) resources you've seen ? PS. Don't get me wrong, I do think we should act very quickly - better safe than sorry.