Space-time signatures of surface warming accelerations since 1970.

Surface warming accelerations since 1970 are concentrated mainly in mid-latitudes of the Northern Hemisphere, with variable onset times from the 1980s to 2010s.

• Why it matters: Understanding regional variations and timing of warming accelerations helps clarify whether global warming is truly accelerating and where efforts should be focused.
• What they did: The study analyzed multiple surface temperature datasets to identify coherent space-time systems of warming acceleration and shifts toward warming since 1970.
• The result: Findings reveal distinct regions and periods of accelerated warming, providing nuanced insights into the spatial and temporal dynamics of climate change.