It’s easy to look out the window on a January morning, see the frost on the car, feel the icy wind on your face and think: “What a winter we’re having.” Our perception of the weather is often terribly local; However, while we shelter ourselves to combat the seasonal coldthe global thermometer tells a very different story. And if we want to know how “cold” this winter has really been, the best place to ask is not our street, but the top of the world, that is, the Arctic.
A technical tie. Every year, during the dark and frigid months of the northern winter, the Arctic Ocean freezes, expanding its ice sheet until it reaches its maximum annual extent. Something that normally occurs between February and March.
but this year control data of this ice expansion have pointed out that the winter limit of Arctic sea ice was reached on March 15, 2026 with an extension that reached 14.29 million square kilometers. This is a number that in isolation may seem like a large amount of ice has formed, but the reality is that 2026 has tied statistically with the historical minimum recorded in 2025.
It’s a problem. Although this year’s extent is nominally lower by just 0.02 million km² compared to last year, the NSIDC considers any fluctuation within a margin of 40,000 km² a “technical tie”.
In other words: we have never had two winters with so little ice in the Arctic since satellite records have existed since 1979.
It’s a problem. To understand why we should worry, we have to look back. Here climatologists usually use the average of the period 1981-2010 as a base reference, and if we compare the maximum of 2026 with that historical average, the reality is that we are missing a piece of ice the size of 1.3 million square kilometers.
We are talking about a reduction of between 8% and 10% of the frozen surface, and to put it in perspective, it is as if a block of ice equivalent to the surface of Spain, France and Germany combined had disappeared. Something that confirms a trend that already points to a loss of this maximum limit of 12% per decade since the end of the 70s, since the ice is not recovering, but is systematically retreating.
It’s not just quantity. The drama of the Arctic is not only read in two dimensions, but also in three, since thickness is essential in this situation. And to measure it the mission comes into play ICESat-2 from NASA, which has already ‘seen’ how much of the current ice, especially in the Barents Sea and the Sea of Okhotsk, It’s much finer than in past decades.
Thinner ice is bad news, since it means it is much more fragile and fractures sooner in spring storms and, more critically, melts much faster in summer.
Its consequences. This last point is fundamental, since seeing how the winter maximum falls is bad news, since the structural weakness of that ice guarantees that, when summer arrives, the thaw will be more aggressive. And if we continue advancing in this chain of events, we find in the end that the dark ocean will be able to absorb a greater amount of solar heat, which will heat the waters even more and make it difficult for ice to form in the following winter. In the end we are seeing a textbook vicious cycle.
Images | Cassie Matias
In Xataka | China has turned the Arctic into its own “Panama Canal.” And that explains the US obsession with Greenland
GIPHY App Key not set. Please check settings