Ocean cycles slow the melt, yet long-term loss remains inevitable
Arctic sea ice loss has unexpectedly slowed over the past 20 years, with researchers finding no major reduction in its extent since 2005 despite rising global temperatures.
Experts attribute the pause to natural climate cycles in the Atlantic and Pacific that have temporarily reduced the flow of warm water into the region. But the slowdown is only a brief respite. “This variability has masked further losses for now, but once it shifts, melting will resume at a faster pace,” said Dr Mark England, lead author of the study.
Satellite data still shows the ice cover has halved since records began in 1979, and thinning continues at around 0.6cm a year. Scientists warn the Arctic is still on track for ice-free summers later this century, with major consequences for global weather, wildlife and climate heating.
“The crisis hasn’t gone away,” said Prof Andrew Shepherd. “This pause is temporary, and urgent action on emissions remains vital.”
