This study demonstrates how increasingly long eddy covariance time series open new opportunities to advance understanding of biosphere–atmosphere interactions. By examining climate-smart management practices in an intensively managed grassland, the authors show how management decisions can stabilize key ecosystem processes, enhance resilience, and partially offset the negative impacts of climate extremes on productivity. The findings provide valuable observational evidence with direct relevance for climate adaptation strategies in agroecosystems and for informing management and policy decisions at local to regional scales.