The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Scientists Find 'Very Unusual' Warming in Antarctic
By Simon Copland
Scientists have drilled 364 metres into ice to complete the first ever comprehensive temperature record of the Antarctic Peninsula—and they’ve found evidence of “very unusual” and dramatic warming over the last century.
The collapse of ice shelves in Antarctica has seen some of the most dramatic images of human-induced climate change. The collapse of the Prince Gustav and Larsen A Ice Shelves in 1995 and then the collapse of the Larsen B Ice Shelve in 2002 stunned scientists, and provided vivid images of the potential future of the southern continent.
New research released today has explained the extent of warming in Antarctic Peninsula, painting a picture of a future of rapid warming and melting ice. The research showed that the Peninsula has seen a rapid warming over the past 100 years, but that this has also come on top 600 years of more gradual, natural warming in the region.
The research was conducted by an international team of climate scientists, including Dr. Nerilie Abram from the Australian National University. The team drilled a 364 metre long ice core spanning thousands of years on James Ross Island. Ice cores show scientists the incremental buildup of the annual layers of snow, providing a time-capsule that shows the climate record over the age of the core. James Ross Island is adjacent to the Larsen A & B and Prince Gustav ice shelves on the Antarctic Peninsula, which have both seen large collapses recently.
Dr. Abram says the warming over the past 100 years has been dramatic. ”The Antarctic Peninsula is one of the fastest warming places on Earth at the moment,” Dr. Abram said. ”The last century of warming has been unusually rapid with the mean temperature increasing by about one and a half degrees—one of the fastest temperature increases seen in the ice core record.”
This warming comes on top of 600 years of previous natural warming found in the ice core. The leader of the research expedition, Dr Robert Mulvaney from the British Antarctic Survey, said: "The exceptionally fast warming over the last 100 years came on top of a slower natural climate warming that began around 600 years ago—well before the industrial revolution—so it is possible that we are now seeing the combination of natural and man-made warming in this area.”
What this means is that climate change is adding significant extra pressure to the Antarctic Peninsula ice sheets that were already seeing some strain from the natural warming in the region. Dr. Abram says this could potentially have a huge impact in other parts of the continent in the future. "Our ice core record, which spans over thousands of years shows that there is a very close link between ice shelf stability and temperature. So if warming continues we can expect that ice shelves will become less stable,” she said.
Dr. Abram says this could have a big impact in the parts of Antarctica that lie to the south and west of the Antarctic Peninsula. These areas have seen more modest warming over the past 100 years, but that that is beginning to change.
“The ice shelves along the west coast are showing signs of becoming less stable, but we haven’t seen the big collapses that we’ve seen on the Antarctic Peninsula so far,” she said. “The big concern about that area is that it is where the West Antarctic ice sheet is. The amount of ice being lost there is accelerating and this is contributing to global sea level rise.”
It paints a worrying picture, according to Abram: “The main finding of our research is that warming as fast as this is very unusual. We should be very concerned about that.”
Visit EcoWatch’s CLIMATE CHANGE page for more related news on this topic.
EcoWatch Daily Newsletter
The annual Arctic thaw has kicked off with record-setting ice melt and sea ice loss that is several weeks ahead of schedule, scientists said, as the New York Times reported.
'This Should Scare the Hell Out of You': Photo of Greenland Sled Dog Teams Walking on Melted Water Goes Viral
By Jon Queally
In yet the latest shocking image depicting just how fast the world's natural systems are changing due to the global climate emergency, a photograph showing a vast expanse of melted Arctic ice in Greenland — one in which a pair of sled dog teams appear to be walking on water — has gone viral.
By Tia Schwab
It has been almost a year since Hurricane Florence slammed the Carolinas, dumping a record 30 inches of rainfall in some parts of the states. At least 52 people died, and property and economic losses reached $24 billion, with nearly $17 billion in North Carolina alone. Flood waters also killed an estimated 3.5 million chickens and 5,500 hogs.
'Huge Victory' for Grassroots Climate Campaigners as NY Lawmakers Reach Deal on Sweeping Climate Legislation
By Julia Conley
Grassroots climate campaigners in New York applauded on Monday after state lawmakers reached a deal on sweeping climate legislation, paving the way for the passage of what could be some of the country's most ambitious environmental reforms.
Tens of Thousands Flee Extreme Heatwave in India as Temperatures Topping 120°F Kill Dozens Across Country
By Julia Conley
Nearly 50 people died on Saturday in one Indian state as record-breaking heatwaves across the country have caused an increasingly desperate situation.
By Will J. Grant
In an ideal world, people would look at issues with a clear focus only on the facts. But in the real world, we know that doesn't happen often.
People often look at issues through the prism of their own particular political identity — and have probably always done so.