A 420 foot lengthy superior U.S. Coast Guard icebreaker referred to as Healy, designed for polar analysis, at present sails peacefully on the Baffin Bay, situated between Baffin Island and the west coast of Greenland. This yr’s journey for Healy has not been a tough one. Electrician grasp chief Mark Hulen, who traversed the Arctic from Seattle to Baltimore by way of the Northwest Passage, informed the time.com: “We struggled with discovering a adequate piece of ice to face on. Nothing was thick sufficient.”
The temperatures within the Arctic area have risen about twice as quick as international temperatures. The Nationwide Snow and Ice Knowledge Heart, on the College of Colorado, mentioned that Arctic sea ice has hit its annual low on September 16.
Now we have referred to as this yr’s seemingly #Arctic sea ice minimal extent at 4.72 MM sq km (1.82 MM sq mi) on September 16. This yr’s minimal extent is ranked twelfth lowest within the satellite tv for pc file. The final 15 years are the bottom 15 within the satellite tv for pc file. https://t.co/gE1iKYlts9 pic.twitter.com/vVy0IhOQ8W
— Nationwide Snow and Ice Knowledge Heart (@NSIDC) September 22, 2021
A examine printed earlier this month had warned that this warming can result in excessive chilly occasions in components of Asia and North America.
“The thick, so-called multiyear ice (sea ice that has survived via at the very least one summer season) is sort of gone. It used to fill many of the Arctic Ocean. This yr the common ice thickness is close to record-low values,” says Jennifer A. Francis, Appearing Deputy Director and Senior Scientist on the Woodwell Local weather Analysis Heart, US in an e mail to indianexpress.com.
How will the melting Arctic have an effect on the climate patterns of North America?
“The essential thought is that the fast warming of the Arctic relative to areas farther south will scale back the north-south temperature distinction. This temperature distinction is the primary drive that creates the jet stream, a river of fast-moving wind that encircles the Northern Hemisphere at altitudes the place jets fly,” explains Dr. Francis.
She provides that when the north-south temperature distinction is giant, the jet stream tends to movement quick and comparatively straight. However when the temperature distinction is smaller, the jet stream weakens and it tends to meander north and south.
“Bigger meanders related with fast Arctic warming and melting imply that climate circumstances in North America and elsewhere across the Northern Hemisphere are likely to linger longer, creating extra extended warmth waves, droughts, stormy intervals, and chilly spells,” she explains.
When requested if India will see any irregular climate patterns because of this fast melting, she provides: “The northern a part of India might expertise extra persistent climate circumstances related to Arctic warming, however the monsoon is influenced primarily by processes that work within the tropics.”
One of many Chief Scientists on the Healy, Larry A. Mayer, Professor and Director on the College of Marine Science and Ocean Engineering, College of New Hampshire informed the indianexpress.com by way of e mail that along with creating excessive climate occasions, the fast Arctic warming can even make fisheries migrate north. “We’re seeing permafrost melting resulting in undermining of constructions and coastal erosion, extreme droughts in North America may additionally be associated to the swings within the jet stream,” he provides.
Just lately, researchers from India and Brazil had famous that Arctic warming additionally performed a job within the latest heatwaves in India.