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Global sea ice hits new low

Report says 5.04m square miles of ice in the Arctic was 525,000 square miles below the 1981-to-2010 ice cover average

INDEPENDENT.CO.UK
The world's sea ice shrank to a record January low last month as the annual polar melting period expanded, experts say.
The 5.04 million square miles of ice in the Arctic was 525,000 square miles below the 1981-to-2010 ice cover average, making it the lowest January total in satellite records, according to the US National Snow and Ice Data Center (NSIDC).
Combined with low levels in the Antarctic, global sea ice amounted to a record low for any first month of the year, the organisation concluded.
The news comes just days after researchers from the University of Colorado Boulder said the rate at
which sea levels are rising was increasing every year, driven mostly by accelerated melting in Greenland and Antarctica.
The NSIDC, a respected authority on the Earth's frozen regions, which researches and analyses snow, glaciers and ice sheets among other features, said that ice in the Arctic Ocean hit “a new record low" at both the start and end of last month.
In an online post, the group said: "January of 2018 began and ended with satellite-era record lows in Arctic sea ice extent, resulting in a new record low for the month. Combined with low ice extent in the Antarctic, global sea ice extent is also at a record low."
It said the Arctic experienced a week of record low daily ice totals at the start of the month, with the January average beating 2017 for a new record low.
"Ice grew through the month at near-average rates, and in the middle of the month daily extents were higher than for 2017," the report went on. "However, by the end of January, extent was again tracking below 2017."
Scientists place more importance on monthly average figures, which smooth out temporary weather effects.
However, the organisation's chief,
Mark Serreze, said he was more worried than ever because ice shrinkage was now starting to happen all year round - in winter as well as in September, the warmest month - which is a recent phenomenon.
Ingrid Onarheim, of the University of Bergen and Bjerknes Centre for Climate Research, said: "We are losing sea ice in all seasons now.”