Sapphire Blue Melting Ponds on Arctic Ice
When the air warms up and the sunlight beats down on Greenland's ice sheet each spring and summer, marvelous sapphire-colored ponds form up like swimming pools. Melting water from glaciers flows in channels and streams and collects in depressions on the surface that are sometimes visible from space. These melt ponds and lakes sometimes disappear quickly - a phenomenon that scientists have observed firsthand in recent years.
Like Us on Facebook