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Melting of Antarctic ice shelves to double by 2050
The melting of Antarctic ice shelves will double by 2050 and by 2100, melting may surpass all predictions if greenhouse gas emissions continue at the present rate, a new study has warned.
Washington: The melting of Antarctic ice shelves will double by 2050 and by 2100, melting may surpass all predictions if greenhouse gas emissions continue at the present rate, a new study has warned.
Ice shelves are the floating extensions of the continent's massive land-based ice sheets. While the melting or breakup of floating ice shelves does not directly raise sea level, ice shelves do have a “door stop” effect.
They slow the flow of ice from glaciers and ice sheets into the ocean, where it melts and raises sea levels.
The projections show that similar levels of melt may occur across coastal Antarctica near the end of this century, raising concerns about future ice shelf stability.
To study how melting evolves over time and to predict future ice sheet melting along the entire Antarctic coastline, the scientists combined satellite observations of ice surface melting with climate model simulations.
The results indicate a strong potential for the doubling of Antarctica-wide ice sheet surface melting by 2050. By 2100, ice sheet surface melting approaches or exceeds intensities associated with ice shelf collapse in the past.
