Newsletter ~ December 2019

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MONTHLY NEWSLETTER DECEMBER 2019

Woods Hole Research Center A dire warning on thawing permafrost Dr. Philip B. Duffy President & Executive Director In its annual Arctic Report Card—a status report on the rapid unravelling happening at the top of the world—the National Oceanic and Atmospheric Administration (NOAA) last week announced that it believes that arctic ecosystems, including thawing permafrost, are now emitting between 1.1 and 2.2 billion tons of carbon dioxide each year to the atmosphere. That is equivalent to 3 - 6% of direct human emissions (i.e. emissions from fossil fuel burning, deforestation, etc.) This is an ominous development, although as I describe below, not unexpected. Why ominous? Greenhouse gas emissions from thawing permafrost add to global warming, and unlike emissions from fossil fuel use, which theoretically are controllable, there is no way to stop emissions from permafrost. And the warmer it gets, the greater the emissions, the greater the warming, and so on: uncontrollable warming. Today’s news means that the self-reinforcing cycle we’ve feared for decades seems to be happening. It’s not clear how much of the emissions from Arctic ecosystem are from thawing permafrost, because there’s a lot going on in the arctic and it is difficult to isolate emissions from specific sources. That does not provide comfort though, because most likely what’s going on is that relatively large emissions from thawing permafrost are partially offset by greening of vegetation (which absorbs carbon). As warming continues the “source” of carbon from permafrost can get much bigger than it is now, and the “sink” of carbon into plants won’t be able to grow as much. So the two may significantly offset one another now, but in the long run thawing permafrost will “win”—and all of us will lose. Even if these emissions don’t grow any larger, this means that in order to stabilize climate we will need to not only stop all human emissions of greenhouse gases

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WHRC scientists push for inclusion of natural systems at COP25 by Dave McGlinchey WHRC researchers took part in more than ten side events, panels, and scientific talks at the COP25 UN climate change conference in Madrid this month—all designed to encourage policy makers to consider the role of natural systems in climate change.

Several of the talks, and two officials side events, focused on the role of the Amazon in climate change mitigation. The Amazon forest includes an amount of carbon equivalent to ten years of global greenhouse gas emissions. WHRC research has shown that the areas of the Amazon with the most aboveground forest carbon are protected natural areas or are controlled by indigenous groups. Dr. Marcia Macedo led three events at the Brazil Climate Action Hub, an official pavilion that was established by IPAM Amazonia and partners, after the Brazilan government declined to establish its own pavilion.

“The Amazon is critically important for maintaining climate stability and indigenous communities are critically important for maintaining the Amazon,” Macedo said, summarizing the message of one of her events.

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WHRC is an independent research organization where scientists study climate change and how to solve it, from the Amazon to the Arctic. Learn more at www.whrc.org.


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Newsletter ~ December 2019 by Woodwell Climate Research Center - Issuu