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Greenland’s Gone Dim
The icy island is becoming less reflective thanks to climate change.
BY Susan Cosier | @SusanCosier | 1 week ago
Photo: NOAA
Greenland is becoming duller. The place is still exciting (perhaps, too exciting...); its icy landscape is just not as reflective as it used to be. Since August 2000, the island’s reflectivity has decreased nearly 6 percent, according to NOAA’s newly released Arctic Report Card 2014. Warmer air temperatures cause snow and ice crystals to lump together, forming smoother edges that don’t bounce back as much sunlight into the atmosphere. In other words, slush isn't so shiny.
The loss of reflectivity causes a feedback loop as more of the sun's energy reaches the earth and raises temperatures, which, in turn, make sparkling ice lose its shimmer—or worse, expose dark spots of ocean and land that absorb even more heat. All in all, the report found that the Arctic is warming twice as fast as the rest of the planet. Too exciting, indeed.
Greenland’s Gone Dim
The icy island is becoming less reflective thanks to climate change.
BY Susan Cosier | @SusanCosier | 1 week ago
Photo: NOAA
Greenland is becoming duller. The place is still exciting (perhaps, too exciting...); its icy landscape is just not as reflective as it used to be. Since August 2000, the island’s reflectivity has decreased nearly 6 percent, according to NOAA’s newly released Arctic Report Card 2014. Warmer air temperatures cause snow and ice crystals to lump together, forming smoother edges that don’t bounce back as much sunlight into the atmosphere. In other words, slush isn't so shiny.
The loss of reflectivity causes a feedback loop as more of the sun's energy reaches the earth and raises temperatures, which, in turn, make sparkling ice lose its shimmer—or worse, expose dark spots of ocean and land that absorb even more heat. All in all, the report found that the Arctic is warming twice as fast as the rest of the planet. Too exciting, indeed.