APA
Click to copy
Jeong, S., Bloom, A., Schimel, D., Sweeney, C., Sweeney, C., Parazoo, N., … Miller, C. (2018). Accelerating rates of Arctic carbon cycling revealed by long-term atmospheric CO2 measurements. Science Advances.
Chicago/Turabian
Click to copy
Jeong, Sujong, A. Bloom, D. Schimel, Colm Sweeney, Colm Sweeney, N. Parazoo, D. Medvigy, et al. “Accelerating Rates of Arctic Carbon Cycling Revealed by Long-Term Atmospheric CO2 Measurements.” Science Advances (2018).
MLA
Click to copy
Jeong, Sujong, et al. “Accelerating Rates of Arctic Carbon Cycling Revealed by Long-Term Atmospheric CO2 Measurements.” Science Advances, 2018.
BibTeX Click to copy
@article{sujong2018a,
title = {Accelerating rates of Arctic carbon cycling revealed by long-term atmospheric CO2 measurements},
year = {2018},
journal = {Science Advances},
author = {Jeong, Sujong and Bloom, A. and Schimel, D. and Sweeney, Colm and Sweeney, Colm and Parazoo, N. and Medvigy, D. and Schaepman‐Strub, G. and Zheng, C. and Schwalm, C. R. and Schwalm, C. R. and Huntzinger, D. and Michalak, A. and Miller, C.}
}
Atmospheric CO2 observations reveal a decrease in Arctic ecosystem carbon residence time over the past four decades. The contemporary Arctic carbon balance is uncertain, and the potential for a permafrost carbon feedback of anywhere from 50 to 200 petagrams of carbon (Schuur et al., 2015) compromises accurate 21st-century global climate system projections. The 42-year record of atmospheric CO2 measurements at Barrow, Alaska (71.29 N, 156.79 W), reveals significant trends in regional land-surface CO2 anomalies (ΔCO2), indicating long-term changes in seasonal carbon uptake and respiration. Using a carbon balance model constrained by ΔCO2, we find a 13.4% decrease in mean carbon residence time (50% confidence range = 9.2 to 17.6%) in North Slope tundra ecosystems during the past four decades, suggesting a transition toward a boreal carbon cycling regime. Temperature dependencies of respiration and carbon uptake suggest that increases in cold season Arctic labile carbon release will likely continue to exceed increases in net growing season carbon uptake under continued warming trends.