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Home Society Climate Change

Rain To Replace Snow In Arctic

New study projects that there will be more rain than snow in the Arctic between 2060 and 2070 - thirty years earlier than previously projected

Henrietta McFarlanebyHenrietta McFarlane
December 4, 2021
in Climate Change, Environment
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In August this year, rain fell instead of snow on the summit of Greenland for the first time on record. A new study, published in the journal of “Nature Communications” suggests that this is likely to become the norm in just four or five decades. This of course has a direct link to climate change and global warming. The implications of the situation in the Arctic are not only catastrophic locally but for the whole world.

The study, led by Michele McCrystall of the University of Manitoba uses new climate modelling which suggests the transition from snow to rain could happen much earlier than scientists had previously projected. Scientists had predicted that the transition wouldn’t occur until 2090/2100 but McCrystall says that “with the new set of models, this has been pushed forward to about between 2060 and 2070”.

The new models suggest that the Arctic may warm faster and that the region’s precipitation patterns are more sensitive to small amounts of warming than previously suspected.   

Rainy #Arctic predicted…important new paper published in Nature Communications with substantial #CHARTERArctic input #RainonSnowhttps://t.co/hxw3g8Nxpa pic.twitter.com/d7cFIZCP6c

— CHARTER Project (@CharterArctic) December 2, 2021

Even if global temperatures can be kept to 1.5C or 2C as in the Paris Agreement, the transition from snow to rain will still take place in some areas. But based on the short-term goals that countries have set out at COP26, temperatures will rise by more than 2.4C by the end of the century, exceeding the upper 2C limit of the Paris Agreement. 

The modelling could not be clearer

The study’s co-author and climate scientist at the University of Exeter says “the new models couldn’t be clearer that unless global warming is stopped, the future Arctic will be wetter, once-frozen seas will be open water, rain will replace snow”.

We have a new paper out today @NatureComms on Arctic precipitation 🌧️🌨️ projections, led by @Michelle_McCrys, with @JulienneStroeve @MarkSerreze @BruceForbes4. A summary thread 🧵 ⬇️

cc @umanitoba @NSIDC @CPOM_news @GSI_Exeter @ExeterUniMaths @ulaplandhttps://t.co/nZr933ZPEZ

— Prof James Screen (@polar_james) November 30, 2021

With a 1.5C increase, it is projected that the Greenland and Norwegian seas will be dominated by rainfall. With a 2C increase, western Russia and parts of the European Arctic will also transition from an average of more snow to more rain, and looking towards a 3C increase, modelling suggests that most regions on the Pacific side of the Arctic would shift to a rainy climate.


Related Articles: Arctic Summer Sea Ice Could Disappear As Soon As 2035  | Climate Change in the Arctic for Dummies – the Basic Facts We Need to Know to Care  

Melting snow and increased rainfall may actually increase global warming itself. Snow’s reflectivity helps to maintain the Earth’s energy balance by reflecting 80% to 90% of incoming sunlight back into space, which helps to cool the planet. The melting snow is a reason behind the Arctic warming much faster compared to other regions around the world.

Melting snow might also disrupt the Arctic’s delicate ecosystems. Species of wildlife that are adapted to the cold and snow may suffer and new species may migrate. But the implications of this study reach far further than the Arctic region itself.  

“What happens in the arctic doesn’t stay there”

McCrystall says “you might think the Arctic is far removed from your day-to-day life, but in fact temperatures there have warmed up so much that [it] will have an impact further south.”

Increased global warming and more melting on Arctic glaciers and the Greenland ice sheet may speed up the rate of global sea-level rise. Some research suggests that warming in the Arctic may drive changes in atmospheric circulation, changing the flow of major air currents such as the polar vortex or jet stream. These changes may significantly affect weather patterns across the Northern Hemisphere.  

Most of the land in the Arctic is tundra, where the subsoil is permanently frozen. McCrystall adds that rainfall would put “warm water into the ground that might melt the permafrost and that will have global implications, because…permafrost is a really great sink of carbon and methane”, two greenhouse gasses which contribute to global warming. With the permafrost gone, the sink of carbon and methane is gone. Therefore, the implications of this study should quickly become a global concern.

The study implies that “more stringent mitigation policies are required as precipitation changes that were expected within 2 °C of global warming above pre-industrial, now appear possible under 1.5 °C of global warming.”

It is imperative that world leaders continually respond to new scientific findings in the fight against climate change and adjust plans for the future accordingly.


Editor’s Note: The opinions expressed here by Impakter.com columnists are their own, not those of Impakter.com. — In the Featured Photo: Iceberg in Greenland, 2015. Featured Photo Credit: NASA on The Commons 

Tags: ArcticClimate ChangeExtreme WeatherGlobal warmingRising Sea LevelsSnow
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Henrietta McFarlane

Henrietta McFarlane

Henrietta McFarlane is a journalist at Impakter. She has recently graduated from the University of Cambridge with a degree in Music and has grown up in both the UK and Australia. She enjoys writing about Indigenous Australian culture and has previously worked as a columnist for Varsity Newspaper where she wrote articles on topics such as the Black Lives Matter movement and the representation of Indigenous Australians in cinema.

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