Relevant and robust climate information and climate change adaptation

In 2021, the world started taking climate change adaptation seriously. The Climate Adaptation Summit (CAS2021) was held as a global virtual event, hosted by the prime ministers of Britain and the Netherlands. There had been conferences on climate change adaptation before, as the 5th European Climate Change Adaptation Conference took place in May-June of the same year (ECCA2021), but not on such a high level. A remarkable observation made from both these events was the lack of visibility of the scientific community on regional climate modelling, such as the CORDEX project under the World Climate Research Programme (WCRP). Climate projections and downscaling of global climate results often provide the basis for climate change adaptation, but the process of downscaling is haunted by notorious obstacles and uncertainties. Hence, there is a strong need for inclusive debates about how to find the best answers. In other words, it is important to use the best available information in the right way. So the lack of a discussion about these concerns may be a result of failed communication efforts. Here I will present some thoughts about what we can learn from that and how we can improve the situation in the future.