The Arctic is much warmer than 6000 years ago… 90% of glaciers, ice caps are smaller than they are now or absent! – Is it good?
Via P Gosselin
Climate alarmists hate this inconvenient fact: hundreds of temperature reconstructions show that the Northern Hemisphere has been much warmer in the last 10,000 years (the Holocene) than it is today.
CODE HEAD: Klimaschau here
66 massive thermal reproductions
A recent study: Arctic glaciers and ice caps across the Holocene: a circuit synthesis of lake-based reconstructions by Laura J. Larocca and Yarrow Axford, published in the journal Climate of the Past, examined Arctic ice caps and glaciers over large parts of the Arctic:
By comprehensively sampling sediment cores extracted from 66 lakes and seas, the scientists reconstructed the melting and expansion of Arctic ice over the past 12,000 years.
What they found was that the Arctic was much warmer 6000 years ago than it is today.
Figure 10d: A compendium of lake-based GIC records across the Arctic. The line shows the percentage of GIC that is less than current or absent from 12 to 0 ka, calculated in 100-year bins. Dashed lines show time bins with a low number of records (<10) available. The bars show the 500-year trash average. The open dots show the earliest mid-to-late Holocene GIC regrowth time relative to the current highest glacial elevation inside the basin of the lake studied. (e) The line shows the number of records from 12 to 0 ka. The bars represent the slope between the 500-year moving averages (above) from the mid to late Holocene. More negative slopes indicate a period with a higher number of regenerative GICs. Source: Larocca et al., 2022.
In Figure 10d of the paper (above), the higher the curve, the smaller the glaciers. It is clear that we see that the glaciers in the Arctic region 6000 years ago were much smaller than they are today. In fact, many species have disappeared altogether and so summers are warmer.
The authors wrote:
We found highest percentage (>90%) of Arctic GICs smaller than present or absent during the Middle Holocene at 7–6 kaprobably reflects more spatially consistent and spatially widespread summer warmth during this period than during the early Holocene. “
More:
Our assessment found that during the first half of the Holocene, most of the small Arctic GICs significantly decreased or melted completely in response to summer temperatures that were on average only marginally warmer than today. medium. “
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