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Is climate change killing the chances of holiday snow for good?

What will a warming climate do to our chances of getting Christmas snow around the globe? You may think it’s obvious, but let’s have a proper examination.

If the phrase β€˜No sh*t Sherlock’ is already running through your head, chill. We promise you’ll learn something here today.

The cultural imagery surrounding Christmas has ubiquitously featured glistening carpets of snow, even in the Southern hemisphere, where the holiday lands in mid-summer.

But, as climate change messes with the equilibrium of the world’s weather patterns, can we expect these wintery scenes to diminish – or at least become rarer – in the future?

Don’t stick your mittens on Vinted or Depop just yet, it’s more complicated than you’d think.

Sayonara white Christmases?

As we’ve established, the world is getting hotter. Please ignore those sections of Twitter, they don’t deserve the attention.

Science shows the planet has warmed by around 1.1C since the start of the industrial revolution, and we’re on a dangerous trajectory to exceeding 3C by 2030 without radical emission cuts.

The last eight years in particular have seen the hottest average temperatures on record. Failing to curtail this trend intuitively suggests that white Christmases largely will die out for many of us… sorry if that’s dented your festive spirit.

β€˜White Christmases were more frequent in the 18th and 19th centuries,’ says the UK Met Office, which also ratified that today’s scarcities are attributed to β€˜higher temperatures over land and sea.’

Even in regions of Europe where snow has always been a given, like the Alps or Scandinavia, barren December’s aren’t an entirely barmy prospect.

Scientists have already predicted a β€˜significant decrease in snow depth’ in the Pyrenees in the next half-century, and 2021 research has posited that snow days in the Alps will halve in frequency by 2100 if emissions stay high.

The same study says mountains with a peak of 2,500m will lose nearly three months of snow days, while those below 500m will record just five annually. Skiing could potentially get even more exclusive. Imagine that.

That fate isn’t yet sealed, however, and bringing pollution levels down to the mandate of the Paris Agreement would reportedly save up to 80% of snow days within these regions.

In areas that are already relatively mild, like the UK, Germany, or Italy, hotter and dryer summers have lessened the odds of snow to β€˜about every five to eight years,’ according to climate researcher Peter Hoffmann.


The opposite impact and blizzards

While many regions are concerned about snow becoming meagre due to temperature shifts, others could get way more than bargained for.

64% of locations across the US have a decreased chance of a white Christmas compared to the 1981-2010 average, but 31% now have increased probability of snow… and heavy snow at that.

That’s because a warmer world is simultaneously a more humid one, and when moisture is in the air it has to fall as either snow or rain. This is why climate change is leading to worsening floods year on year.

When the air is sufficiently cold in certain months, it could mean that the excess humidity transforms into snowfall and dangerous blizzards.

You’ll likely recall America’s 2010 β€˜Snowmageddon’ which led to 41 fatalities. In the years since, this has been directly linked to high Atlantic Ocean surface temperatures and accelerated humidity – aka global warming.

So, the impact of marked temperature shifts on our planet are a menace on both fronts. Not only do they lessen our festive spirit, but they also put people and delicate ecosystems in harm’s way. Great.

Merry climate change everyone! Where’s the wine?

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