Southern Annular Mode

Today, glaciers in Patagonia and Antarctica are receding. In both cases, this has been attributed to changes in the Southern Westerly Winds and the Southern Annular Mode (SAM). The Southern Westerly Winds are an important wind belt that encircles the globe in the southern mid-latitudes1,2, with its core between 50-55°S1. The Southern Annular Mode describes …

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Changes to Circumpolar Deep Water

What is Circumpolar Deep Water? Circumpolar Deep Water is derived from a mixture of all the World’s oceans[1]. It is a relatively salty, warm current, >3.5°C above freezing point, which flows onto the continental shelf at depths of more than 300 m[2]. It is overlain by colder, fresher surface waters. Circumpolar Deep Water is critical …

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Glaciers and Climate

This section of the website highlights how glaciers interact with climate, and how changing climate is changing glaciers around the world today. Globally, glaciers are receding and shrinking in response to atmospheric warming. The signal is remarkably consistent across different continents and mountain ranges. Glaciers are a critical water resource in many mountain regions of …

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