Earth's Chandler wobble—the irregular oscillation of the planet's rotational axis—diminished significantly after 2015, following a massive La Niña event in 2011. Scientists have identified links between this polar motion change and mass anomalies in the atmosphere and ocean, explaining why Earth's spin behavior shifted dramatically over the past two decades.
·The Chandler wobble weakened after 2015, breaking a pattern that had persisted for over a century
·A severe La Niña event in 2011 triggered mass redistributions that altered Earth's rotational dynamics
·Atmospheric and oceanic factors drive the irregular tipsiness of Earth's axis at the poles
·The planet experienced its shortest day ever, partly attributed to wobble variations
·Similar wobbles have now been detected on other planets, suggesting this is a universal planetary phenomenon
drawn from Encyclopedia Britannica, AGU Publications, The Watchers - Watching the world evolve and transform, 404 Media · updated 41d ago