Beaulieu, Claudie and Johnson, Adelicia and Killick, Rebecca and Lanzante, John and Knutson, Thomas (2025) Space-time signatures of surface warming accelerations since 1970. Other. Research Square.
Full text not available from this repository.Abstract
With record-breaking temperatures over 2023-2024 and extreme events observed around the world, there is currently a debate in the scientific literature and media as to whether global warming is accelerating. Here we address this question from a regional perspective; determining regions where an increase in the rate of warming is detected in surface temperature observations. Our results show that there are coherent space-time systems of acceleration in warming since 1970 that are consistent across multiple surface temperature datasets. We show that accelerated warming has occurred in different regions and is mostly present at mid-latitudes of the Northern Hemisphere. There is notable variability in the onset of regional accelerations: the timings vary from the 1980s to 2010s. Our results provide some nuance about the ongoing debate about global warming acceleration by identifying the source regions and their timings.