The June 2020 issues of ESA's Frontiers in Ecology and the Environment is a Special Issue on Climate Change Refugia: https://esajournals.onlinelibrary.wiley.com/toc/15409309/2020/18/5. Great stuff.

Check out our paper on "Disturbance refugia within mosaics of forest fire, drought, and insect outbreaks" https://doi.org/10.1002/fee.2190

And the overview paper on "Climate-change refugia: biodiversity in the slow lane" https://doi.org/10.1002/fee.2189