Southern Annular Mode in most positive state in 1,000 years, review finds

PHYSorg
Dec 2, 2025, 9:44 am104 pts
A new review has revealed that the Southern Annular Mode (SAM), the Southern Hemisphere's most influential climate driver, is now in its most positive state in more than 1,000 years. If greenhouse gas emissions continue to rise, this positive state is projected to persist throughout the 21st century, with…

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