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Climate change likely to increase black carbon input to the Arctic Ocean

Date:
November 30, 2015
Source:
University of Georgia
Summary:
The levels of black carbon in Arctic rivers has been determined by researchers who found that the input of black carbon to the Arctic Ocean is likely to increase with global warming.
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Arctic rivers are the major way black carbon is transported to the ocean.
Credit: University of Georgia

University of Georgia Skidaway Institute of Oceanography scientist Aron Stubbins led a team of researchers to determine the levels of black carbon in Arctic rivers and found that the input of black carbon to the Arctic Ocean is likely to increase with global warming. The results of their study were recently published in the journal Frontiers in Earth Science.

Black carbon, or biochar, is formed when vegetation and other organic matter burns. Today black carbon is a massive store of carbon in global soils, where it is thought to be very stable--so stable, that researchers have previously suggested that adding black carbon to soils might be a good way to lock away carbon dioxide and reduce climate change. This new research reveals that the black carbon stored in Arctic soils is being exported to the oceans.

The Arctic is warming faster than other regions of the planet due to climate change. The scientists report that, as the planet warms, the amount of black carbon transported to the Arctic Ocean will likely increase. Once dissolved in the ocean and exposed to sunlight, black carbon may be rapidly converted back to the greenhouse gas carbon dioxide.

In ongoing work at UGA and partner universities, Stubbins and his colleagues are trying to determine just how much black carbon will be exported to the Arctic Ocean as the Arctic continues to warm, and once it reaches the oceans, what percentage will reach the atmosphere as carbon dioxide.


Story Source:

Materials provided by University of Georgia. Original written by Mike Sullivan. Note: Content may be edited for style and length.


Journal Reference:

  1. Aron Stubbins, Robert G. M. Spencer, Paul J. Mann, R. Max Holmes, James W. McClelland, Jutta Niggemann, Thorsten Dittmar. Utilizing colored dissolved organic matter to derive dissolved black carbon export by arctic rivers. Frontiers in Earth Science, 2015; 3 DOI: 10.3389/feart.2015.00063

Cite This Page:

University of Georgia. "Climate change likely to increase black carbon input to the Arctic Ocean." ScienceDaily. ScienceDaily, 30 November 2015. <www.sciencedaily.com/releases/2015/11/151130182247.htm>.
University of Georgia. (2015, November 30). Climate change likely to increase black carbon input to the Arctic Ocean. ScienceDaily. Retrieved September 29, 2016 from www.sciencedaily.com/releases/2015/11/151130182247.htm
University of Georgia. "Climate change likely to increase black carbon input to the Arctic Ocean." ScienceDaily. www.sciencedaily.com/releases/2015/11/151130182247.htm (accessed September 29, 2016).