Open Access
Open access
volume 15 issue 12 pages 5301-5369

Global Carbon Budget 2023

Pierre Friedlingstein 1
Michael O'Sullivan 2
M W Jones 3
Robbie M. Andrew 4
Judith Hauck 6
Ingrid T. Luijkx 8
Glen P. Peters 4
William L. Peters 8, 9
Julia Pongratz 10, 11
Stephen Sitch 2
Josep G. Canadell 12
Philippe Ciais 13
Robert Jackson 14, 15
Simone R. Alin 16
Peter M. Anthoni 17
L. Barbero 18
Nicholas R. Bates 19, 20
Meike Becker 21, 22
Nicolas Bellouin 23
Bertrand Decharme 24
Laurent Bopp 25
Ida Bagus Mandhara Brasika 2, 26
Patricia Cadule 25
MATTHEW CHAMBERLAIN 27
Naveen Chandra 28
Thi Tuyet Trang Chau 29
F. Chevallier 13, 30
Louise Chini 31
Margot Cronin 32
Xinyu Dou Xinyu Dou 33
Kazutaka Enyo 34
Wiley Evans 35
Stefanie Falk 10
R. A. Feely 16
Liang Feng 36, 37
Daniel J. Ford 2
Thomas Gasser 38
J. Ghattas 13
Thanos Gkritzalis 7
Giacomo Grassi 39
L. Gregor 40
I C Harris 41
Matthew Hefner 42, 43
Jens Heinke 44
Richard Houghton 45
George Hurtt 31
Yosuke Iida 34
Tatiana Ilyina 11
Andrew R Jacobson 46, 47
Atul Jain 48
Tereza Jarníková 3
Annika Jersild 11
Fei Jiang 49
Zhe Jin 50, 51
Fortunat Joos 52, 53
Etsushi KATO 54
Daniel Kennedy 56
K. K. Goldewijk 57
J.B Knauer 12, 58
Jan Ivar Korsbakken 4
Arne Körtzinger 59
Xin Lan 46, 47
Nathalie Lefévre 60
Hongmei Li 11
Junjie Liu 61
Zhiqiang Liu 62
Lei Ma 31
Greg Marland 42, 43
Nicolas Mayot 3
Patrick C. McGuire 63
Gesa Meyer 65
Eric J Morgan 55
David D. Munro 46, 47
Shinichiro Nakaoka 66
Yosuke Niwa 66, 67
Kevin D. O'Brien 16, 68
A. Olsen 21, 22
Abdirahman M. Omar 22, 69
Tsuneo ONO 70
Melf Paulsen 59
D Pierrot 71
Katie Pocock 35
Carter M Powis 73
Gustavo P. Rehder 74
Laure Resplandy 75, 76
E. G. ROBERTSON 77
Thais M. Rosan 2
J. Schwinger 22, 79
Roland Séférian 24
Thomas Luke Smallman 36
Stephen M Smith 73
Reinel Sospedra-Alfonso 80
Qing Sun 52, 53
Adrienne J. Sutton 16
Colm Sweeney 47
Shintaro Takao 66
Pieter Tans 81
H. Tian 82
Bronte Tilbrook 27, 83
H. Tsujino 84
G. R. van der Werf 8
Erik van Ooijen 27
Rik Wanninkhof 71
Michio Watanabe 28
Cathy Wimart-Rousseau 59
D Yang 86
Wenping Yuan 88
Xu Yue 89
Sönke Zaehle 78
Jiye Zeng 66
Bo Zheng 90
1
 
LMD - Laboratoire de Météorologie Dynamique (UMR 8539) (LMD ENS 24 Rue Lhomond 75231 Paris Cedex 05 - France)
4
 
CICERO Center for International Climate Research, 0349 Oslo, Norway
7
 
Flanders Marine Institute (VLIZ), Jacobsenstraat 1, 8400, Ostend, Belgium
13
 
LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (Bât. 12, avenue de la Terrasse, F-91198 GIF-SUR-YVETTE CEDEX - France)
16
 
National Oceanic and Atmospheric Administration Pacific Marine Environmental Laboratory (NOAA/PMEL), 7600 Sand Point Way NE, Seattle, WA 98115, USA
24
 
CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
30
 
SATINV - Modélisation INVerse pour les mesures atmosphériques et SATellitaires (LSCE. CEA Paris-Saclay. Orme des merisiers. 91190 Saint-Aubin. - France)
32
 
Marine Institute, Rinville, Oranmore, Co Galway H91 R673, Ireland
35
 
Hakai Institute, 1713 Hyacinthe Bay Rd, Heriot Bay, BC, V0P 1H0, Canada
40
 
Environmental Physics Group, ETH Zürich, Institute of Biogeochemistry and Pollutant Dynamics and Center for Climate Systems Modeling (C2SM), Zurich, Switzerland
45
 
Woodwell Climate Research Center, Falmouth, MA 02540, USA
47
 
National Oceanic and Atmospheric Administration Global Monitoring Laboratory (NOAA/GML), 325 Broadway R/GML, Boulder, CO 80305, USA
54
 
Institute of Applied Energy (IAE), Minato-ku, Tokyo, 105-0003, Japan
60
 
VOG - Variabilité de l'Océan et de la Glace de mer (France)
62
 
CMA Key Open Laboratory of Transforming Climate Resources to Economy, Chongqing Institute of Meteorological Sciences, Chongqing, 401147, China
69
 
NORCE Norwegian Research Centre, Jahnebakken 5, 5007 Bergen, Norway
70
 
Marine Environment Division, Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa-Ku, Yokohama, 236-8648, Japan
71
 
National Oceanic and Atmospheric Administration Atlantic Oceanographic and Meteorological Laboratory (NOAA/AOML), 4301 Rickenbacker Causeway, Miami, FL 33149, USA
79
 
NORCE Climate & Environment, Jahnebakken 5, 5007 Bergen, Norway
80
 
Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada
Publication typeJournal Article
Publication date2023-12-05
scimago Q1
wos Q1
SJR4.066
CiteScore20.6
Impact factor11.6
ISSN18663508, 18663516
General Earth and Planetary Sciences
Abstract

Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical 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) is estimated with global ocean biogeochemistry models and observation-based fCO2 products. The terrestrial CO2 sink (SLAND) is estimated with dynamic global vegetation models. Additional lines of evidence on land and ocean sinks are provided by atmospheric inversions, atmospheric oxygen measurements, and Earth system models. 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 incomplete understanding of the contemporary carbon cycle. All uncertainties are reported as ±1σ. For the year 2022, EFOS increased by 0.9 % relative to 2021, with fossil emissions at 9.9±0.5 Gt C yr−1 (10.2±0.5 Gt C yr−1 when the cement carbonation sink is not included), and ELUC was 1.2±0.7 Gt C yr−1, for a total anthropogenic CO2 emission (including the cement carbonation sink) of 11.1±0.8 Gt C yr−1 (40.7±3.2 Gt CO2 yr−1). Also, for 2022, GATM was 4.6±0.2 Gt C yr−1 (2.18±0.1 ppm yr−1; ppm denotes parts per million), SOCEAN was 2.8±0.4 Gt C yr−1, and SLAND was 3.8±0.8 Gt C yr−1, with a BIM of −0.1 Gt C yr−1 (i.e. total estimated sources marginally too low or sinks marginally too high). The global atmospheric CO2 concentration averaged over 2022 reached 417.1±0.1 ppm. Preliminary data for 2023 suggest an increase in EFOS relative to 2022 of +1.1 % (0.0 % to 2.1 %) globally and atmospheric CO2 concentration reaching 419.3 ppm, 51 % above the pre-industrial level (around 278 ppm in 1750). Overall, the mean of and trend in the components of the global carbon budget are consistently estimated over the period 1959–2022, with a near-zero overall budget imbalance, although discrepancies of up to around 1 Gt C yr−1 persist for the representation of annual to semi-decadal variability in CO2 fluxes. Comparison of estimates from multiple approaches and observations shows the following: (1) a persistent large uncertainty in the estimate of land-use changes emissions, (2) a low agreement between the different methods on the magnitude of the land CO2 flux in the northern extra-tropics, and (3) a discrepancy between the different methods on the strength of the ocean sink over the last decade. This living-data update documents changes in methods and data sets applied to this most recent global carbon budget as well as evolving community understanding of the global carbon cycle. The data presented in this work are available at https://doi.org/10.18160/GCP-2023 (Friedlingstein et al., 2023).

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Friedlingstein P. et al. Global Carbon Budget 2023 // Earth System Science Data. 2023. Vol. 15. No. 12. pp. 5301-5369.
GOST all authors (up to 50) Copy
Friedlingstein P. et al. Global Carbon Budget 2023 // Earth System Science Data. 2023. Vol. 15. No. 12. pp. 5301-5369.
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@article{2023_Friedlingstein,
author = {Pierre Friedlingstein and Michael O'Sullivan and M W Jones and Robbie M. Andrew and Dorothee C.E Bakker and Judith Hauck and Peter Landschützer and Corinne Le Quéré and Ingrid T. Luijkx and Glen P. Peters and William L. Peters and Julia Pongratz and Clemens Schwingshackl and Stephen Sitch and Josep G. Canadell and Philippe Ciais and Robert Jackson and Simone R. Alin and Peter M. Anthoni and L. Barbero and Nicholas R. Bates and Meike Becker and Nicolas Bellouin and Bertrand Decharme and Laurent Bopp and Ida Bagus Mandhara Brasika and Patricia Cadule and MATTHEW CHAMBERLAIN and Naveen Chandra and Thi Tuyet Trang Chau and F. Chevallier and Louise Chini and Margot Cronin and Xinyu Dou Xinyu Dou and Kazutaka Enyo and Wiley Evans and Stefanie Falk and R. A. Feely and Liang Feng and Daniel J. Ford and Thomas Gasser and J. Ghattas and Thanos Gkritzalis and Giacomo Grassi and L. Gregor and Nicolas Gruber and Özgür Gürses and I C Harris and Matthew Hefner and Jens Heinke and others},
title = {Global Carbon Budget 2023},
journal = {Earth System Science Data},
year = {2023},
volume = {15},
publisher = {Copernicus},
month = {dec},
url = {https://essd.copernicus.org/articles/15/5301/2023/},
number = {12},
pages = {5301--5369},
doi = {10.5194/essd-15-5301-2023}
}
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Friedlingstein, Pierre, et al. “Global Carbon Budget 2023.” Earth System Science Data, vol. 15, no. 12, Dec. 2023, pp. 5301-5369. https://essd.copernicus.org/articles/15/5301/2023/.