Persistent austral winter storm track weakening beyond doubling of CO₂ concentrations.

ABSTRACT: The winter storm track in the Southern Hemisphere has large weather and climate impacts, as it drives daily to multi-decadal variations in extratropical winds, precipitation, and temperature. In the lower mid-latitudes, where the southern parts of the continents reside, the storm track is projected to initially increase with greenhouse gas emissions but to weaken as emissions continue. Given the extensive efforts to mitigate climate change, it is critical to assess the reversibility of the storm track under a negative emissions scenario. Here, we show that while changes in the storm track are reversible under a doubling of CO₂ concentrations, beyond that point, the storm track weakening becomes irreversible for centuries. The persistent storm track weakening stems from a prolong

SUBMITTER: Chemke R 

PROVIDER: S-EPMC11850772 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature