Pyrenees view
The finding that ‘the temperature increase [since 1950] is most notable in the past 2500 years’ fits with the recent research of Prof. Harald Yndestad (as we featured here). Natural climate variation never went away.
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The world’s high mountain regions are particularly sensitive to climate change, says Dr David Whitehouse @ Net Zero Watch.
Straddling the border between France and Spain the Pyrenees occupy a crucial position in southern Europe, influenced by both Mediterranean and Atlantic climates.
New research published in the journal ‘Climate of the Past,’ investigating climate proxy data based on stalagmites is revealing that past climates were warmer than our own.
This is the first climate reconstruction in the region based on speleothems over the past 2500 years. Previous reconstructions have been based on lake sediments, tree-rings and glaciers.
Global surface temperatures in the first two decades of the 21st century (2001–2020) were 0.84 to 1.10°C warmer than 1850–1900 AD (IPCC, 2021). According to the IPCC anthropogenic global warming is unprecedented in terms of absolute temperatures and spatial consistency over the past 2000 years.
However, pre-industrial temperatures were less spatially coherent, and further work is needed to explain regional and natural climate change. Thus, according to the authors of the new study, “obtaining new and high-quality records in terms of resolution, dating and regional representativeness is thus critical for characterising natural climate variability on decadal to centennial scales.”
It is clear that the Pyrenees has followed the global trend. Their temperature has increased by more than 1.5 °C since 1882, as shown by the longest time series recorded at the Pic du Midi observatory. Recent studies confirm this warming trend, showing an increase of 0.1 °C per decade during the last century in the Central Pyrenees, or even 0.28°C per decade if only the 1959-2015 period is considered.
In addition, long-term snow depth observations (starting in 1955) show a statistically significant decline, especially at elevations above 2000 m. The glaciated area has decreased by 21.9% in the last decade from 2060 ha during the Little Ice Age (LIA) to 242 ha in 2016.
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The new work has been carried out by researchers from seven nations and led by the Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology in Zaragoza (Spain). It presents a composite record of oxygen isotope variations during last 2500 years based on eight stalagmites from four caves in the central Pyrenees dominated by temperature variations, with precipitation playing a minor role.
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In summary: Over the past 2500 years it was the Roman Period that was the warmest. A cold period started around 300 AD with two particularly cold events in 500-650 and 750-850. The warm and dry Medieval Climatic Anomaly was well observed as well as the Little Ice Age.
Cooling was observed during the Maunder Minimum and possibly the Dalton Minimum, both periods of low solar activity. Low temperatures started to increase around 1950 and the temperature increase since then is most notable in the past 2500 years.
Full article here.
Tallbloke's Talkshop 
In my part of the Pyrenees (SE France) there is still evidence of the Romans settling there in small villages and growing warm climate crops which the locals no longer can.
‘According to the IPCC anthropogenic global warming is unprecedented in terms of absolute temperatures and spatial consistency over the past 2000 years.’
The anthropogenic part is a claim not a fact. Delete it and the statement could well be true but then, so what? Adaptation is a normal response, resistance is futile.