Research shows a link between Pacific Ocean warming and Antarctic stratospheric changes.
The phenomenon occurs despite the vast distance of over 10,000 kilometers.
Surface waters warm near the equator during northern winter, triggering the response.
Briefing: From tropics to poles: How Pacific Ocean warming sets the stage for Antarctic stratospheric changes months later
Strategic angle: New research reveals the connection between warming surface waters in the tropical Pacific and delayed responses in the Antarctic stratosphere.