propagation

Earth

Clouds impeding the propagation of the Southern Annular Mode

Changes in CRE heating rate and zonal mean circulation index due to cloud lock-in. Source: Journal of Geophysical Research: Atmospheres (2024). DOI: 10.1029/2023JD040428 The Southern Annular Mode (SAM), characterized by an iconic bipolar zonal wind pattern around the storm track axis, is the most dominant mode of variability regulating weather and winds from the subtropics to the poles. Its origin,…