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Greenland ice sheet
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The Greenland ice sheet is an ice sheet which forms the second-largest body of ice in the world. It is an average of 1,673 m thick and over 3,488 m thick at its maximum. It is almost 2,900 kilometres
The pattern of ice flows at the Greenland ice sheet, with arrows pointing to outlet glaciers where ice calving occurs
The pattern of ice flows at the Greenland ice sheet, with arrows pointing to outlet glaciers where ice calving occurs
Glaciologist at work
Glaciologist at work
Until 2007, rate of decrease in ice sheet height in cm per year
Until 2007, rate of decrease in ice sheet height in cm per year
Petermann Glacier experiences notable shifts from year to year not just at its calving front, but also at its grounding line, which renders it less st
Petermann Glacier experiences notable shifts from year to year not just at its calving front, but also at its grounding line, which renders it less stable. If such behaviour turns out to be widespread at other glaciers, this could potentially double their rates of ice loss.
Climate change
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Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. In a broader sense, climate change also incl
Greenland ice sheet
…Every summer, parts of the surface melt and ice cliffs calve into the sea. Normally the ice sheet would be replenished by winter snowfall, but due to global warming the ice sheet is melting two to five times faster than before 1850, and snowfall has not kept up since 1996. If the Paris Agreement goal of staying…
Sea ice reflects 50% to 70% of incoming sunlight, while the ocean, being darker, reflects only 6%. As an area of sea ice melts and exposes more ocean,
Sea ice reflects 50% to 70% of incoming sunlight, while the ocean, being darker, reflects only 6%. As an area of sea ice melts and exposes more ocean, more heat is absorbed by the ocean, raising temperatures that melt still more ice. This is a positive feedback process.
Different levels of global warming may cause different parts of Earth's climate system to reach tipping points that cause transitions to different sta
Different levels of global warming may cause different parts of Earth's climate system to reach tipping points that cause transitions to different states.
Ecological collapse. Coral bleaching from thermal stress has damaged the Great Barrier Reef and threatens coral reefs worldwide.
Ecological collapse. Coral bleaching from thermal stress has damaged the Great Barrier Reef and threatens coral reefs worldwide.
Extreme weather. Drought and high temperatures worsened the 2020 bushfires in Australia.
Extreme weather. Drought and high temperatures worsened the 2020 bushfires in Australia.