Yukon Warmest it has Been in 13,600 Years

https://www.sciencedaily.com/releases/2019/04/190410120606.htmPaleoclimatologist and lead author, Trevor Porter, for the first time in a field study used radiocarbon dating and water isotopes preserved in a layer of permafrost underneath a peatland in central Yukon to reconstruct the summer temperatures in that area over the past 13,600 years. Every summer, new peat moss forms and accumulates at the surface, and top of permafrost. Each centimeter contains 20-30 years worth of precipitation. This settles into well blended layers of information, according to Porter. The results of this study confirmed previous studies of midges (small insects also preserved within permafrost). The study states that industrial-era warming led to current summer temperatures exceeding previous maximum temperatures by 2 degrees Celsius. This warming  is above the global average and the average of the Arctic region in general. 9,000 years ago was a deep permafrost thaw but the temperatures at that time were still lower than they are today. This leaves permafrost vulnerable to similar thaws and threatens to release higher amounts of greenhouse gases, potentially amplifying global climate change.

I find this interesting because it shows just how much warmer Earth is getting. Regions known for being cold and having frozen ground are thawing out releasing greenhouse gases. This means not only are our emissions from human activity but greenhouse gases from within Earth are increasing global climate change.

Comments

  1. AnonymousApril 15, 2019 at 4:42 AM

    This is very interesting, but also very concerning. We as a global population need to do better in order to decrease/stall the effects of climate change

    ReplyDelete
  2. AnonymousApril 16, 2019 at 11:08 AM

    This is interesting I did not know consider that climate change was this much of an issue

    ReplyDelete

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