Global Carbon Budget 2020

作者：P. Friedlingstein, Michael O'Sullivan, Matthew W. Jones, R. Andrew, J. Hauck, A. Olsen, G. Peters, W. Peters, J. Pongratz, S. Sitch, C. Le Quéré, J. Canadell, P. Ciais, R. Jackson, S. Alin, L. Aragão, A. Arneth, V. Arora, N. Bates, Meike Becker, A. Benoit-Cattin, H. Bittig, L. Bopp, S. Bultan, N. Chandra, F. Chevallier, L. Chini, W. Evans, L. Florentie, P. Forster, T. Gasser, M. Gehlen, D. Gilfillan, T. Gkritzalis, L. Gregor, N. Gruber, I. Harris, K. Hartung, V. Haverd, R. Houghton, T. Ilyina, A. Jain, E. Joetzjer, K. Kadono, E. Kato, V. Kitidis, J. I. Korsbakken, Peter Landschützer, N. Lefèvre, A. Lenton, Sebastian Lienert, Zhu Liu, D. Lombardozzi, G. Marland, N. Metzl, D. Munro, J. Nabel, S. Nakaoka, Y. Niwa, K. O'Brien, T. Ono, P. Palmer, D. Pierrot, B. Poulter, L. Resplandy, E. Robertson, C. Rödenbeck, J. Schwinger, R. Séférian, I. Skjelvan, Adam J. P. Smith, A. Sutton, T. Tanhua, P. Tans, H. Tian, B. Tilbrook, G. R. van der Werf, N. Vuichard, A. Walker, R. Wanninkhof, A. Watson, David Willis, A. Wiltshire, W. Yuan, X. Yue, S. Zaehle · 发表于：Earth System Science Data · 年份：2020 · DOI：10.5194/essd-2020-286 · 被引用次数：4168 · 研究领域：Environmental Science

Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate – the “global carbon budget” – is important to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe and synthesize data sets and methodology to quantify the five major components of the global carbon budget and their uncertainties. Fossil CO2 emissions (EFOS) are based on energy statistics and cement production data, while emissions from land-use change (ELUC), mainly deforestation, are based on land use and land-use change data and bookkeeping models. Atmospheric CO2 concentration is measured directly and its growth rate (GATM) is computed from the annual changes in concentration. The ocean CO2 sink (SOCEAN) and terrestrial CO2 sink (SLAND) are estimated with global process models constrained by observations. The resulting carbon budget imbalance (BIM), the difference between the estimated total emissions and the estimated changes in the atmosphere, ocean, and terrestrial biosphere, is a measure of imperfect data and understanding of the contemporary carbon cycle. All uncertainties are reported as ±1σ. For the last decade available (2010–2019), EFOS was 9.6 ± 0.5 GtC yr−1 excluding the cement carbonation sink (9.4 ± 0.5 GtC yr−1 when the cement carbonation sink is included), and ELUC was 1.6 ± 0.7 GtC yr−1. For t...