Authors
Susan Natali, Jennifer Watts, Brendan M Rogers, Stefano Potter, Benjamin Abbott, Kyle Andreas Arndt, Leah Birch, Mats P Bjorkman, A Anthony Bloom, Gerardo Celis, Casper Christiansen, Roisin Commane, Elisabeth Cooper, Patrick M Crill, Claudia I Czimczik, Sergey P Davydov, Jinyang Du, Jocelyn E Egan, Bo Elberling, Eugenie Susanne Euskirchen, Thomas Friborg, Genet Helene, Mathias Goeckede, Jordan P Goodrich, Paul Grogan, Manuel Helbig, Elchin Jafarov, Julie D Jastrow, Aram AM Kalhori, Yongwon Kim, John S Kimball, Lars Kutzbach, Mark J Lara, Klaus S Larsen, Michael M Loranty, Sarah Ludwig, Magnus Lund, Massimo Lupascu, Jack W Mcfarland, Anthony David McGuire, Anders Michelsen, Christina Minions, Walter C Oechel, David Olefeldt, Frans-Jan W Parmentier, Norbert Pirk, William L Quinton, Fereidoun Rezanezhad, Torsten Sachs, Kevin M Schaefer, Joshua Schimel, Niels Martin Schmidt, Edward Schuur, Anne-Katrin Selbmann, Philipp R Semenchuk, Gaius R Shaver, Oliver Sonnentag, Gregory Starr, Patrick Sullivan, Claire C Treat, Mark P Waldrop, Yihui Wang, Jeffrey M Welker, Christian Wille, Xiaofeng Xu, Zhen Zhang, Qianlai Zhuang, Donatella Zona, Nima Madani, Avni Malhotra, Benjamin Poulter, David A Risk
Publication date
2018/12
Journal
AGU Fall Meeting Abstracts
Volume
2018
Pages
B23A-01
Description
Air temperature across the Arctic has been increasing twice as fast as the global average, with the greatest warming occurring during the nongrowing season (NGS; late fall, winter, early spring). Warming during the NGS may have a profound impact on belowground carbon storage because microbial respiration continues when soils are frozen, while photosynthetic uptake has, in large part, ceased. While NGS respiration is recognized as an important component of annual arctic carbon balance, in situ measurements of NGS CO 2 fluxes from soils are relatively sparse. As a result, both the sign and magnitude of the current and future arctic carbon balance remain highly uncertain. To address this uncertainty, we examine the drivers of NGS soil respiration using 1.) a newly-established network of soil respiration sensors located at ten sites across Alaska and Western Canada, and 2.) a synthesized dataset of NGS CO 2 …
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