Never miss a story

Get subscribed to our newsletter


×
FILE - An iceberg floats in Andvord Bay, Antarctica, Feb. 14, 2018. VOA

The amount of ice circling Antarctica is suddenly plunging from a record high to record lows, baffling scientists.

Floating ice off the southern continent steadily increased from 1979 and hit a record high in 2014. 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, a NASA study of satellite data shows.


In recent years, “things have been crazy,” said Mark Serreze, director of the National Snow and Ice Data Center. In an email, he called the plummeting ice levels “a white-knuckle ride.”

Serreze and other outside experts said they don’t know if this is a natural blip that will go away or more long-term global warming that is finally catching up with the South Pole. Antarctica hasn’t showed as much consistent warming as its northern Arctic cousin.


The amount of ice circling Antarctica is suddenly plunging from a record high to record lows, baffling scientists. Pixabay

“But the fact that a change this big can happen in such a short time should be viewed as an indication that the Earth has the potential for significant and rapid change,” University of Colorado ice scientist Waleed Abdalati said in an email.

At the polar regions, ice levels grow during the winter and shrink in the summer. Around Antarctica, sea ice averaged 4.9 million square miles (12.8 million square kilometers) in 2014. By 2017, it was a record low of 4.1 million square miles (10.7 million square kilometers, according to the study in Monday’s Proceedings of the National Academy of Sciences.

The difference covers an area bigger than the size of Mexico. Losing that much in just three years “is pretty incredible” and faster than anything scientists have seen before, said study author Claire Parkinson, a NASA climate scientist. Antarctic sea ice increased slightly in 2018, but still was the second lowest since 1979. Even though ice is growing this time of year in Antarctica, levels in May and June this year were the lowest on record, eclipsing 2017, according to the ice data center.

Ice melting on the ocean surface doesn’t change sea level. Non-scientists who reject mainstream climate science often had pointed at increasing Antarctic sea ice to deny or downplay the loss of Arctic sea ice.

Also Read- Scientists Say Cigar-Shaped Interstellar Object Not an Alien Spaceship

While the Arctic has shown consistent and generally steady warming and ice melt — with some slight year to year variation — Antarctica has had more ups and downs while generally trending upward. That is probably in part due to geography, Parkinson and Serreze said.

The Arctic is a floating ice cap on an ocean penned in by continents. Antarctica is just the opposite, with land surrounded by open ocean. That allows the ice to grow much farther out, Parkinson said.

When Antarctic sea ice was steadily rising, scientists pointed to shifts in wind and pressure patterns, ocean circulation changes or natural but regular climate changes like El Nino and its southern cousins. Now, some of those explanations may not quite fit, making what happens next still a mystery, Parkinson said. (VOA)


Popular

Photo by Diabetesmagazijn.nl on Unsplash

Eating fruits is one of the most satisfying ways to tackle sweet-tooth cravings while meeting your nutritional needs.

By Monika Manchanda

Eating fruits is one of the most satisfying ways to tackle sweet-tooth cravings while meeting your nutritional needs. Despite many studies and research on fruit consumption in diabetes, there are a lot of speculations on the right kind of fruit consumption and its relation to blood sugar levels.

Eating seasonal and locally available fruit has many health benefits ranging from reducing sugar and inflammation levels to fighting high blood pressure -- thanks to their abundant vitamins and mineral presence! They are a powerhouse of antioxidants like vitamins A, B, C, E, and minerals like iron, calcium, magnesium, and fiber.

The fruits listed below are not just diabetic-friendly but are loaded with fiber and water content which can slow down the sugar spikes and sugar absorption rate. Apples are not just nutritious and filling; According to a study, they are significantly associated with a lower risk of type 2 diabetes if consumed in moderation. Turns out there is a truth in the old saying, "An apple a day keeps the doctor away", after all!

red apples Apples are not just nutritious and filling; According to a study, they are significantly associated with a lower risk of type 2 diabetes if consumed in moderation. | Photo by Pierpaolo Riondato on Unsplash

Keep Reading Show less
Photo by Priscilla Du Preez on Unsplash

Your monthly round up of the latest lifestyle launches, from luxury indulgences to artisanal creations.

By Nimerta C Sharan

Your monthly round up of the latest lifestyle launches, from luxury indulgences to artisanal creations, here's what you can look forward to :

Bag This
Exciting news for all handbag lovers, luxury fashion house Louis Vuitton recently launched their limited edition handbags 'Artycapucines - Chapter 3'. Six internationally -- acclaimed artists have transformed the black canvas of the timeless Capucines bag into beautiful art pieces. Each bag will be available in a limited edition of 200 and will be released worldwide at the end of October 2021.

white leather shoulder bag on shopping cart Exciting news for all handbag lovers, luxury fashion house Louis Vuitton recently launched their limited edition handbags. | Photo by Erik Mclean on Unsplash

Keep Reading Show less
IANS

Actress Kangana Ranaut has talked about how her weight adjustments for her latest 'Thalaivii' that "messed up many things" in her body

Actress Kangana Ranaut has talked about how her weight adjustments for her latest 'Thalaivii' that "messed up many things" in her body and left her with "permanent stretch marks". For her role in the film, based on the life of late Tamil Nadu Chief Minister and former actress J. Jayalalithaa, Kangana had to gain 20kg and undergo major physical transformation several times.

She took to Instagram to share her experience, detailing that doing all that over the six months period left her with "permanent stretch marks". "Gaining 20 kgs in 6 months and loosing it all within 6 months that too in my thirties messed up many things in my bodya I also have permanent stretch marks as well but art comes to life with a price and more often than not price is the artist him/herself," she wrote.

"Thalaivii" showcases the varied aspects of Jayalalithaa's life, tracing her journey as an actress at a young age to becoming the face of Tamil cinema, as well as the rise of the revolutionary leader who changed the course of the state's politics. Talking about her upcoming works, Kangana currently has 'Dhaakad'.

She is also shooting for her next 'Tejas', where she plays a fighter pilot. The Indian Air Force was the first of the country's defence forces to induct women into combat roles in 2016. The film takes inspiration from the landmark event. 'Tejas' is directed by debutant Sarvesh Mewara. The film will be RSVP's second film which pays a tribute to the Indian military after the immensely successful film "Uri: The Surgical Strike" which was released in January 2019. (IANS/ MBI)


Keep reading... Show less