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January 28, 2021
427 billion tonnes per year of ice.
Antarctica is losing 149 billion tonnes per year of ice. Greenland is losing 278 billion tonnes per year. The trend has been this way since data has been recorded in 1979. The graph from NASA below shows a more rapid decrease in ice over the past few decades.
Antarctica Ice Mass Per Year (NASA)
Greenland Ice Mass Per Year (NASA)
It is expected that ice coverage increases and decreases throughout the year due to annual temperature variations. Ice is usually at its minimum in terms of coverage at the end of a hemisphere’s summer. The Arctic Sea Ice reaches its minimum in September as the end of northern Hemispheres summer wraps up. ....

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