Science

Antarctic sea ice in dizzying decline since 2014

Antarctic sea ice in dizzying decline since 2014”

In 2014, in Antarctica, it reached a maximum value: 12.8 million square kilometers. But three years later, the annual average extent of Antarctic sea ice hit its lowest mark, wiping out three-and-a-half decades of gains, and then some, according to a new study.

But the sharp downward shift in recent years at least provides additional data that could enable researchers to test and refine their models, and unearth additional links between shifting climate and changes in sea ice.

Unlike the Arctic, Antarctica is not warming and remains the coldest place on Earth, as well as its largest source of freshwater.

This January 2017 photo provided by Ted Scambos shows sea ice on the ocean surrounding Antarctica during an expedition to the Ross Sea.

In 2018, the ice area has increased slightly, but was still the second lowest since 1979.

From 2014 to 2017, however, "the Antarctic lost nearly as much as the Arctic" over nearly 40 years, NASA climatologist Claire Parkinson told AFP, and the trend has continued ever since. Kilometers, according to the examine in Monday's Proceedings of the National Academy of Sciences.

The difference covers an area bigger than the size of Mexico.

This massive drop comes after more than three decades of gradual increases in Antarctic sea ice coverage. Non-scientists who reject mainstream local weather science often had pointed at increasing Antarctic sea ice to deny or downplay the lack of Arctic sea ice.

"The Arctic has become a poster child for global warming", Parkinson said. Another satellite research uncovers that somewhere around 2014 and 2017 ocean ice degree in the southern half of the globe endured uncommon yearly abatements, leaving the zone secured via ocean ice at its absolute bottom in the span of 40 years. Antarctica is just the opposite, with land surrounded by open ocean.

Scientists believe changing wind patterns, changes in ocean circulation, or the El Nino effect could be to blame, but there is no consensus.

Note that the melting of surface ice does not affect sea level. Now, a few of those explanations may not quite fit, making what happens next still a mystery, Parkinson mentioned.



Like this

loading...
loading...

Latest


04 July 2019
Fortnite players see portals from Netflix's Stranger Things before Season 3 premiere
If you head to Mega Mall's .er, Mall, you'll find Gates - complete with floating spores - attached to the walls of various stores. Its likely that any files related to Stranger Things were added earlier this week but encrypted to avoid being leaked.

04 July 2019
Baidu AI Developer Conference
Beijing police said a man had been placed in administrative detention on suspicion of "picking quarrels and provoking trouble". As his heckler turned around and walked away, Li was heard saying in English, "What's your problem?".

04 July 2019
DC Universe going big at Comic-Con with panels and events
It was initially announced last month that characters from Marvel Knights , Fantastic Four and X-Men will be added to the game. The majority of those surprises will likely involve the Nintendo Switch exclusive Marvel Ultimate Alliance: The Black Order .

04 July 2019
Florida woman arrested after leaving $5,000 tip at restaurant, police say
She initially denied the purchase was hers, Crane said, and he reported it to his credit card company as fraudulent. Police characterized the incident as a "revenge plot" after Crane refused to pay for the flight, ABC News reported.

04 July 2019
Seven new cannabis store licenses coming to Eastern Ontario
In eastern Ontario, seven licences will be issued, while western Ontario will receive 11 new licences. It was announced that Canada's "Canopy Growth" CEO Bruce Linton was out.

04 July 2019
Fortnite v9.30 Content Update Introduces the New Drum Shotgun
The players are finding this new weapon overpowered and can easily obtained from Floor Loot, Vending Machines, and Loot Carriers. Other weapons are much more effective up-close, and that's something you'll need to keep in mind when entering gunfights.

04 July 2019
Nike withdraws a pair of trainers after Kaepernick calls them offensive
Lisa Moulder, director of the Betsy Ross House in Philadephia, said she has never heard of the flag being used as a hate symbol. US Senator Ted Cruz said on Twitter that because of the decision to pull the shoes, his days as a Nike customer were over.

04 July 2019
Sudan's junta 'agrees to release political prisoners'
The military council, which is now running Sudan, has been under pressure from the worldwide community to hand over power. The military deposed longtime leader Omar al-Bashir in April, amid widespread protests against his ironfisted rule.

04 July 2019
Love Island: Find out Amber's reaction following dumping
During her argument with Michael, Anna said: 'Say it straight up - you found a girl that you like and have a connection. Fans of Love Island were kept on tenderhooks tonight, as the original cast was forced to make some hard choices.

04 July 2019
North Korea says U.S. hell-bent on sanctions despite Trump-Kim meeting
But there was nothing positive in Wednesday's statement from North Korea's UN Mission, which made no mention of nuclear talks, focusing instead on sanctions.