Sino-French Institute for Earth System Science, Institute of Carbon Neutrality, College of Urban and Environmental Sciences, Peking University, Beijing, China
Research Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
Institute of Eco-Chongming, East China Normal University, Shanghai, China
Sino-French Institute for Earth System Science, Institute of Carbon Neutrality, College of Urban and Environmental Sciences, Peking University, Beijing, China
Gustaf Hugelius
Department of Physical Geography, Stockholm University, 10691 Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm University, 10691 Stockholm, Sweden
Simon P. K. Bowring
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA–CNRS–UVSQ, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Daniel S. Goll
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA–CNRS–UVSQ, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Including high-latitude deep carbon is critical for projecting future soil carbon emissions, yet it is absent in most land surface models. Here we propose a new carbon accumulation protocol by integrating deep carbon from Yedoma deposits and representing the observed history of peat carbon formation in ORCHIDEE-MICT. Our results show an additional 157 Pg C in present-day Yedoma deposits and a 1–5 m shallower peat depth and 43 % less passive soil carbon in peatlands compared to the conventional protocol.
Including high-latitude deep carbon is critical for projecting future soil carbon emissions, yet...