New Study: 6500 Years Ago The Western Barents Sea Was Ice-Free And 10°C Warmer Than 2015

The Arctic’s western Barents Sea (Storfjordrenna) surface temperatures now range between 2-4°C. Sea ice persists in the region for 10 months of the year. A new study finds this same region was sea ice-free, 10°C warmer than today (13°C), and SSTs rapidly rose and fell by degrees C per century during the mid-Holocene.

The western Barents Sea surface temperatures oscillated around 3°C in 2015 according to a new study (Łacka et al., 2019).

Image Source: Łacka et al., 2019

During the Bølling-Allerød epoch 14,500 years ago, when CO2 concentrations were still in the 230 ppm range, Łacka et al., 2019 found the western Barents Sea surface temperatures to be comparable (2-4°C) to today.

From about 9000 to 3500 years ago, this same region’s temperatures rapidly (degrees Celsius per century) fluctuated between 3°C and 13°C. The latter temperature value – 10°C warmer than today – was achieved about 6500 years ago (265 ppm CO2).

Evidence also suggests this region of the Arctic was sea ice-free throughout most of the mid-Holocene. In contrast, today’s sea ice persists for all but August and September in the northern Barents Sea.

Image Source: Łacka et al., 2019

7 responses to “New Study: 6500 Years Ago The Western Barents Sea Was Ice-Free And 10°C Warmer Than 2015”

  1. Brian G Valentine

    Undersea volcanic activity probably played a part in this and I am quite certain that it continues to do so.

  2. Yonason

    That was before 1979, the point at which climate history begins for warmists.

    Anything before that doesn’t count for them.

    They have been living in their fantasy world so long that I don’t think they are capable of dealing with evidence based science anymore.

  3. Thomas Robbins

    Yes, agree with volcanic activity an El Nino formation, Researchers were startled at the dizzying number of under water volcanoes…they assumed a dozen or so medium to large. Sonar showed thousands!

  4. Henning Nielsen

    No sea ice, and yet the polar bears survived? Or did they all migrate into the Berlin Zoo for a few thousdand years?

  5. peterr

    This paper describes in detail what happend in this area, and provides plausible explanations for the rapidly shifting temperatures in the middle holocene.
    Storfjordrenna is positioned on the boundary between cold Arctic water and warm Atlantic waters. The described sharp temperature rise is the result of an influx of warm Atlantic water into an area previously dominated by cold arctic water. The processes are well understood and contrary to what most comments here seem to think do not cast any doubt on anthropogenic globals warming.

  6. Před 6500 lety bylo Západní Barentsovo moře bez ledu a o 10°C teplejší než v roce 2015 -
  7. Weekly Local weather and Power Information Roundup #388 – Daily News

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