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Large loss of CO2 in winter observed across the northern permafrost region

Nature climate change, 2019-11, Vol.9 (11), p.852-857 [Peer Reviewed Journal]

Copyright Nature Publishing Group Nov 2019 ;info:eu-repo/semantics/openAccess ;ISSN: 1758-678X ;ISSN: 1758-6798 ;EISSN: 1758-6798 ;DOI: 10.1038/s41558-019-0592-8 ;PMID: 35069807

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Title:
Large loss of CO2 in winter observed across the northern permafrost region
Author: Natali, Susan M. ; Watts, Jennifer D. ; Rogers, Brendan M. ; Potter, Stefano ; Ludwig, Sarah M. ; Selbmann, Anne-Katrin ; Sullivan, Patrick F. ; Abbott, Benjamin W. ; Arndt, Kyle A. ; Birch, Leah ; Björkman, Mats P. ; Bloom, A. Anthony ; Celis, Gerardo ; Christensen, Torben R. ; Christiansen, Casper T. ; Commane, Roisin ; Cooper, Elisabeth J. ; Crill, Patrick ; Czimczik, Claudia ; Davydov, Sergey ; Du, Jinyang ; Egan, Jocelyn E. ; Elberling, Bo ; Euskirchen, Eugenie S. ; Friborg, Thomas ; Genet, Hélène ; Göckede, Mathias ; Goodrich, Jordan P. ; Grogan, Paul ; Helbig, Manuel ; Jafarov, Elchin E. ; Jastrow, Julie D. ; Kalhori, Aram A. M. ; Kim, Yongwon ; Kimball, John S. ; Kutzbach, Lars ; Lara, Mark J. ; Larsen, Klaus S. ; Lee, Bang-Yong ; Liu, Zhihua ; Loranty, Michael M. ; Lund, Magnus ; Lupascu, Massimo ; Madani, Nima ; Malhotra, Avni ; Matamala, Roser ; McFarland, Jack ; McGuire, A. David ; Michelsen, Anders ; Minions, Christina ; Oechel, Walter C. ; Olefeldt, David ; Parmentier, Frans-Jan W. ; Pirk, Norbert ; Poulter, Ben ; Quinton, William ; Rezanezhad, Fereidoun ; Risk, David ; Sachs, Torsten ; Schaefer, Kevin ; Schmidt, Niels M. ; Schuur, Edward A. G. ; Semenchuk, Philipp R. ; Shaver, Gaius ; Sonnentag, Oliver ; Starr, Gregory ; Treat, Claire C. ; Waldrop, Mark P. ; Wang, Yihui ; Welker, Jeffrey ; Wille, Christian ; Xu, Xiaofeng ; Zhang, Zhen ; Zhuang, Qianlai ; Zona, Donatella
Subjects: amplification ; Arctic ; arctic tundra ; Carbon ; Carbon dioxide ; Carbon dioxide emissions ; Carbon dioxide flux ; Carbon uptake ; Climate Research ; climate-change ; Climatic conditions ; Earth and Related Environmental Sciences ; Ecosystem models ; ecosystems ; Emissions ; Environment models ; ENVIRONMENTAL SCIENCES ; exchange ; Geovetenskap och miljövetenskap ; Growing season ; Klimatforskning ; Matematikk og Naturvitenskap: 400 ; Mathematics and natural science: 400 ; Microorganisms ; Mitigation ; Natural Sciences ; Naturvetenskap ; Organic matter ; Organic soils ; Permafrost ; Polar environments ; respiration ; Seasons ; snow depth ; Soil ; Soil loss ; Soil organic matter ; Soils ; temperature sensitivity ; Terrestrial environments ; uncertainty ; Uptake ; VDP ; Winter ; winter respiration ; Zoologiske og botaniske fag: 480 ; Zoology and botany: 480
Is Part Of: Nature climate change, 2019-11, Vol.9 (11), p.852-857
Description: Recent warming in the Arctic, which has been amplified during the winter1–3, greatly enhances microbial decomposition of soil organic matter and subsequent release of carbon dioxide (CO2)4. However, the amount of CO2 released in winter is not known and has not been well represented by ecosystem models or empirically based estimates5,6. Here we synthesize regional in situ observations of CO2 flux from Arctic and boreal soils to assess current and future winter carbon losses from the northern permafrost domain. We estimate a contemporary loss of 1,662 TgC per year from the permafrost region during the winter season (October–April). This loss is greater than the average growing season carbon uptake for this region estimated from process models (−1,032 TgC per year). Extending model predictions to warmer conditions up to 2100 indicates that winter CO2 emissions will increase 17% under a moderate mitigation scenario—Representative Concentration Pathway 4.5—and 41% under business-as-usual emissions scenario—Representative Concentration Pathway 8.5. Our results provide a baseline for winter CO2 emissions from northern terrestrial regions and indicate that enhanced soil CO2 loss due to winter warming may offset growing season carbon uptake under future climatic conditions.
Publisher: London: Nature Publishing Group
Language: English
Identifier: ISSN: 1758-678X
ISSN: 1758-6798
EISSN: 1758-6798
DOI: 10.1038/s41558-019-0592-8
PMID: 35069807
Source: NORA Norwegian Open Research Archives
ProQuest Central

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Large loss of CO2 in winter observed across the northern permafrost region

Copyright Nature Publishing Group Nov 2019 ;info:eu-repo/semantics/openAccess ;ISSN: 1758-678X ;ISSN: 1758-6798 ;EISSN: 1758-6798 ;DOI: 10.1038/s41558-019-0592-8 ;PMID: 35069807

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