Overview

• The Perito Moreno glacier, known for its stability over the past 80 years, has been retreating steadily since 2020, with mass loss accelerating in recent years.
• Recent measurements show the glacier is losing between 1–2 meters of water equivalent annually, raising concerns about potential further acceleration.
• Unusually large ice calving events, with blocks as tall as 70 meters breaking off, have become more frequent over the last four to six years.
• Regional warming of 0.06°C per decade and declining precipitation have disrupted the glacier’s mass balance, reducing snow and ice accumulation.
• Despite its decline, the glacier remains a major tourist attraction, with visitors flocking to witness its dramatic ice collapses up close.