Ask HN: Interesting Climate (Change) Datasets

Hi HN,

For a university data visualisation course I need to create insightful visualisation designs for climate (change) data. Apart from the usual meteorological office/world bank etc. data that is easy to find, does anyone have knowledge of interesting datasets that relate to the topic? This could also be datasets that measure second-order effects over a long time, that viewed with other resources paint an interesting picture, etc.

Many times I've found interesting links in HN comments, so I thought I'd ask and perhaps hit a great source here - thanks!