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Global Warming

Discover the signs that suggest global warming is now prevalent.
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We know the Earth is warming, because we’ve measured it. This is Stockholm Old Observatory. In this building, temperature has been measured since 1756. That’s long enough for us to be able to see climate change. Mean annual temperature in Stockholm tends to vary between 4-8 degrees. In the past, warm years and cold years alternated randomly. This is no longer the case. Now, every year is a warm year.
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And indeed, 2020 was the warmest year on record: 9 degrees. That’s the beyond the scale we used in the past.
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So, what does that mean for Stockholm? It means winters are becoming shorter. Indeed, winters are likely to disappear in Stockholm by mid-century. So, that might seem unimportant, when other countries are facing rising sea levels. They are facing relentless bushfires. They are facing lethal heatwaves. But it is important. Because winter is something beautiful. It is not ours to take away. It’s a reminder for us that the climate crisis is here and now.

Geologist, Alasdair Skelton, explains that measurements made at Stockholm Old Observatory since 1756 show clearly that the Earth is warming. Indeed 2020 was the warmest year on record in Stockholm. He explores consequences, both globally (e.g. heat waves, bushfires) and locally. He notes that winters are likely to disappear in Stockholm by mid-century1.

1 This statement is based on the meteorological definition of winter in Sweden. This, according to the Swedish Meteorological and Hydrological Institute is that the onset of winter is marked by a period of at least five days with an average temperature of 0 degrees or below.

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