The world’s northernmost settlement and home to what is known as the “Doomsday vault” – the subterranean Svalbard global seed vault which stores specimens of almost all the world’s seeds - is now believed to be the fastest-warming location on Earth, according to a new report.

Longyearbyen, on the Norwegian island of Svalbard, had an average temperature in Svalbard was -7.8C in 1900 but since then, it has risen by 3.7C – more than three times the global average rise of about 1°C.

Not only has it become significantly warmer, but wetter too, spelling trouble for the Doomsday vault as the seeds’ preservation depends on stable temperatures and bone-dry conditions.

“Svalbard is the ultimate failsafe for biodiversity of crops,” Marie Haga, the executive director of the Crop Trust told CNN.

The vault was opened in 2008. Its construction was funded by the Norwegian government and built in partnership with the country’s Crop Trust and is now a secure storage unit for around a million seed samples, representing over 13,000 years of agricultural history.

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The location was chosen for good reason. Set deep within a mountain in a geologically inert area, there is a very low risk of earthquakes or volcanoes and similarly, Norway’s political system is also “very stable”, Ms Haga said.

The seeds are stored at -18C.

But the increasing likelihood of wet weather has already seen major upheaval at the site.

Following heavy rainfall in October 2016, the entrance to the seed vault became half-flooded and ended up freezing into huge blocks of ice.

None of the water reached the vault itself, but since then major works to replace the original steel entrance tunnel with a waterproof concrete one have been undertaken.

Inger Hanssen-Bauer, a senior researcher at the Norwegian Meteorological Institute and the editor of the report on Svalbard, said the reason the region is undergoing such massive temperature rises was because of accelerated Arctic warming.