Global warming is creating MORE ice: Antarctic levels reach a record high because of climate change, scientists claim

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Earlier this year, global warming was blamed for the ‘irreversible retreat’ of west Antarctic glaciers.

But now scientists claim that warming of the planet is in fact behind a paradoxical growth in South Pole sea ice.

The comments come as Antarctica’s sea ice set a record this week, reaching 815,448 square miles (1,312,000 square km) of ice above its normal range.

Antarctic ice maps for September 2009 until September 2012 reveal an increase in the level of sea ice

Scientists believe the shift is caused by water melting from beneath the Antarctic ice shelves and re-freezing back on the surface.

‘The primary reason for this is the nature of the circulation of the Southern Ocean — water heated in high southern latitudes is carried equatorward, to be replaced by colder waters upwelling from below, which inhibits ice loss,’ Mark Serreze, director of the National Snow and Ice Data Centre, told Harold Ambler at Talking About the Weather.

However, as reported in a separate blog post by Mr Ambler, Nasa scientist Walt Meier said that growing Antarctic sea ice coverage is less significant a measure than declining Arctic sea ice coverage when assessing climate change.

Earlier this year, global warming was blamed for the 'irreversible retreat' of west Antarctic glaciers. But now scientists claim that warming of the planet is in fact behind a paradoxical expansion in South Pole sea ice

Earlier this year, global warming was blamed for the ‘irreversible retreat’ of west Antarctic glaciers. But now scientists claim that warming of the planet is in fact behind a paradoxical expansion in South Pole sea ice

Despite ice coverage increasing in some areas, Nasa claims that in a few hundred years the irreversible melt that has already started from the Amundsen Sea sector of the West Antarctica ice sheet, pictured, has now 'passed the point of no return' and could eventually add four to 12 feet (1.2 to 3.7 metres) to current sea levels

Despite ice coverage increasing in some areas, Nasa claims that in a few hundred years the irreversible melt that has already started from the Amundsen Sea sector of the West Antarctica ice sheet, pictured, has now ‘passed the point of no return’ and could eventually add four to 12 feet (1.2 to 3.7 metres) to current sea levels

Hopeless: Scientists say the early stages of collapse have already begun and there's nothing we can do to stop itHopeless: Scientists say the early stages of collapse have already begun and there's nothing we can do to stop it

On the left here is the elevation of the region, while on the right the various glaciers that will be affected by the melting of the Amundsen Sea region. Nasa scientist Walt Meier said that growing Antarctic sea ice coverage is less significant a measure than declining Arctic sea ice coverage when assessing climate change

Last year, team from the Royal Netherlands Meteorological Institute found that the fresh water melting from the Antarctic ice sheets had a relatively low density compared to the denser salty seawater.

This means that the water accumulates and freezes in the top layer of the ocean during the summer months, as reported in the Daily Caller.

Surrounded by North America, Greenland and Eurasia, the Arctic ice cap floats on the ocean, not land. It has lost a large amount of its older, thicker sea ice over the last 30 years, making it more vulnerable to the warming trend.

Last year, a team from the Royal Netherland's Meteorological Institute found that the fresh water melting from the Antarctic ice sheets had a relatively low density compared to the denser salty seawater. This means that it accumulates in the top layer of the ocean during the summer months

Last year, a team from the Royal Netherland’s Meteorological Institute found that the fresh water melting from the Antarctic ice sheets had a relatively low density compared to the denser salty seawater. This means that it accumulates in the top layer of the ocean during the summer months

The Antarctic, however, is a continent circled by open waters that lets sea ice expand during the winter but also offers less shelter during the melt season.

The Dutch report found that despite the increase in surface ice expansion each winter, the total mass of ice around Antarctica is continuing to shrink because of the underwater ice melt.

In May, Nasa scientists told reporters that vast glaciers in West Antarctica seem to be locked in an irreversible thaw linked to global warming that may push up sea levels for centuries.

In a few hundred years they say the irreversible melt that has already started could eventually add four to 12 feet (1.2 to 3.7 metres) to current sea levels.

ANTARCTIC BEGAN MELTING 5,000 YEARS EARLIER THAN FIRST THOUGHT

A new study has revealed that shrinking of the vast ice sheet accelerated during eight distinct periods between 20,000 and 9,000 years ago causing a rapid sea level rise. Pictured is one of many icebergs that sheared off the continent and ended up in the Scotia Sea

 

The Antarctic ice sheet is more unstable than first thought with a new study suggesting melting began 5,000 years earlier than previously believed.

The study in May revealed that shrinking of the vast ice sheet accelerated during eight distinct periods between 20,000 and 9,000 years ago causing a rapid sea level rise.

During one period 14,600 years ago, melting glaciers released so many icebergs into the ocean that sea level rose 6.5ft (2 metres) in just 100 years. 

The results provide the first clear evidence for dramatic melting in Antarctic’s and reflect predictions for the region’s future.

It also follows recent news that destabilisation of part of the West Antarctic ice sheet has already begun and could be ‘unstoppable.’

The study was conducted by an international team including researchers from Germany, Canada, Hawaii, Lapland and Australia.

Periods of rapid increase in iceberg-rafted debris suggest that more icebergs were being released by the Antarctic ice sheet.

The researchers discovered increased amounts of debris during eight separate episodes beginning as early as 20,000 years ago, and continuing until 9,000 years ago. 

Up until now, melting of Antarctic ice sheet wasn’t thought to have started until 14,000 years ago.

Source
dailymail.co.uk

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2 Responses

  1. Jan says:

    Far more land ice is lost than sea ice gained. And land ice melt causes sea level rise.

  2. Linda says:

    TOTAL BALOGNA. And I suppose that the reason our great lakes have risen this year is due to the same thing. It was cold and the ice levels were high this year. The water level rise is a good thing. More fresh water is the result.

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