Global Carbon Budget 2015

Earth System Science Data - Tập 7 Số 2 - Trang 349-396
Corinne Le Quéré1, R. Moriarty1, Robbie M. Andrew2, Josep G. Canadell3, Stephen Sitch4, Jan Ivar Korsbakken2, Pierre Friedlingstein5, Glen P. Peters2, R. J. Andres6, T. A. Boden6, R. A. Houghton7, Joanna I. House8, Ralph F. Keeling9, Pieter P. Tans10, Almut Arneth11, Dorothée C. E. Bakker12, Leticia Barbero13, Laurent Bopp14, Jinfeng Chang14, Frédéric Chevallier14,15, Louise Chini16, Philippe Ciais17,14, Marianela Fader18, Richard A. Feely19, Thanos Gkritzalis20, Ian Harris21, Judith Hauck22, Tatiana Ilyina23, Atul K. Jain24, Etsushi Kato25, Vassilis Kitidis26, Kees Klein Goldewijk27, Charles D. Koven25,28, Peter Landschützer29, Siv K. Lauvset30,31, Nathalie Lefèvre32, Andrew Lenton33, Ivan D. Lima7, Nicolas Metzl34, Frank J. Millero35, David R. Munro36,37, Akihiko Murata38, Julia E. M. S. Nabel23, Shin‐Ichiro Nakaoka39, Yukihiro Nojiri28, Kevin O’Brien40, Are Olsen30,31, Tsuneo Ono41, Fı́z F. Pérez42, Benjamin Pfeil43, Denis Pierrot44, Benjamin Poulter14, Gregor Rehder45, Christian Rödenbeck46, Shu Saito47, Ute Schuster4, Jörg Schwinger30,31, Roland Séférian48, Tobias Steinhoff49, Benjamin D. Stocker50, Adrienne J. Sutton51,19, Taro Takahashi52, Bronte Tilbrook53, Ingrid T. Luijkx54, Guido R. van der Werf55, Steven van Heuven56, Doug Vandemark57, Nicolas Viovy14,58, Andy Wiltshire59, Sönke Zaehle60, Ning Zeng61
1Tyndall Centre for Climate Change Research (University of East Anglia, Norwich NR4 7TJ, Royaume-Uni - United Kingdom)
2CICERO - Center for International Climate and Environmental Research [Oslo] (Gaustadalléen 21, 0349 Oslo - Norway)
3Oceans and Atmosphere Research (Australia)
4College of Life and Environmental Sciences [Exeter] (University of Exeter, Exeter EX4 4QE - United Kingdom)
5University of Exeter (Mail Room, The Old Library Prince of Wales Road Exeter, Devon UK EX4 4SB - United Kingdom)
6CDIAC - Carbon Dioxide Information Analysis Center [Oak Ridge] (United States)
7WHOI - Woods Hole Oceanographic Institution (266 Woods Hole Road Woods Hole, MA 02543-1050 - United States)
8University of Bristol [Bristol] (Senate House, Tyndall Avenue, Bristol BS8 1TH - United Kingdom)
9SIO - UC San Diego - Scripps Institution of Oceanography (University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0208, U.S.A. - United States)
10ESRL - NOAA Earth System Research Laboratory (325 Broadway, Boulder, CO 80305-3337 - United States)
11IMK-IFU - Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (Institute for Meteorology and Climate Research - Atmospheric Environmental Research, Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany - Germany)
12UEA - University of East Anglia [Norwich] (Norwich Research Park, Norwich, NR4 7TJ, UK - United Kingdom)
13RSMAS - Rosenstiel School of Marine and Atmospheric Science (University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149 - United States)
14LSCE - 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)
15SATINV - Modélisation INVerse pour les mesures atmosphériques et SATellitaires (LSCE. CEA Paris-Saclay. Orme des merisiers. 91190 Saint-Aubin. - France)
16Department of Geographical Sciences (United States)
17ICOS-ATC - ICOS-ATC (LSCE. CEA Paris-Saclay. Orme des merisiers. 91190 Saint-Aubin. - France)
18IMBE - Institut méditerranéen de biodiversité et d'écologie marine et continentale (Aix Marseille Université, Campus Etoile, Faculté St-Jérôme case 421 Av. . escadrille Normandie-Niemen 13397 MARSEILLE CEDEX 20 - France)
19PMEL - NOAA Pacific Marine Environmental Laboratory [Seattle] (7600 Sand Point Way NE Seattle, WA 98115 - United States)
20VLIZ - Flanders Marine Institute (Innovocean Site, Wandelaarkaai 7, B-8400 Oostende - Belgium)
21CRU - Climatic Research Unit [Norwich] (University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK - United Kingdom)
22AWI - Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (Am Handelshafen 12, 27570 Bremerhaven, Bundesrepublik Deutschland - Germany)
23MPI-M - Max Planck Institute for Meteorology (Bundesstraße 53 20146 Hamburg - Germany)
24Department of Atmospheric Sciences [Urbana] (101 Atmospheric Sciences Building, 105 S. Gregory St. Urbana, IL 61801-3070 - United States)
25IAE - Institute of Applied Energy (Minato-ku, Tokyo 105-0003 - Japan)
26PML - Plymouth Marine Laboratory (Prospect Place The Hoe Plymouth PL1 3DH - United Kingdom)
27PBL Netherlands Environmental Assessment Agency (Bezuidenhoutseweg 30, 2594 AV The Hague - Netherlands)
28UFZ - Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research ( 04318 Leipzig, Germany - Germany)
29IBP - Institute of Biogeochemistry and Pollutant Dynamics [ETH Zürich] (Universitaetstrasse 16, 8092 Zurich - Switzerland)
30BCCR - Bjerknes Centre for Climate Research (Allégaten 70 , NO-5007 Bergen, Norway - Norway)
31GFI / BiU - Geophysical Institute [Bergen] (Universitetet i Bergen, Geofysisk institutt, Allégaten 70, 5020 Bergen - Norway)
32ABC - Austral, Boréal et Carbone (France)
33CSIRO - Oceans and Atmosphere Flagship (Wembley, Western Australia - Australia)
34E-CO2 - Équipe CO2 (France)
35Department of Ocean Sciences (United States)
36ATOC - Department of Atmospheric and Oceanic Sciences [Boulder] (Boulder, CO 80309-0311 - United States)
37INSTAAR - Institute of Arctic Alpine Research [University of Colorado Boulder] (Institute of Arctic and Alpine Research University of Colorado Campus Box 450 Boulder, CO 80309-0450 USA - United States)
38JAMSTEC - Japan Agency for Marine-Earth Science and Technology (2-15, Natsushima-cho, Yokosuka-shi, Kanagawa, Japan - Japan)
39NIES - National Institute for Environmental Studies (Tsukuba, Ibaraki - Japan)
40NOAA - National Oceanic and Atmospheric Administration (1401 Constitution Avenue, NW Room 5128, Washington DC 20230 - United States)
41AIST - National Institute of Advanced Industrial Science and Technology (Higashi, Tsukuba, Ibaraki 305-8561 - Japan)
42IIM - Instituto de Investigaciones Marinas (Vigo - Spain)
43UiB - University of Bergen (Universitetet i Bergen | Postboks 7800, NO-5020 Bergen - Norway)
44CIMAS - Cooperative Institute for Marine and Atmospheric Studies (United States)
45Leibniz Institute for Baltic Sea Research Warnemünde, Seestr 15, 18119 Rostock, Germany
46MPI-BGC - Max-Planck-Institut für Biogeochemie (Hans-Knöll-Str. 10, 07745 Jena - Germany)
47JMA - Japan Meteorological Agency (1-3-4 Otemachi, Chiyoda-ku, Tokyo 100-8122, Japan - Japan)
48Météo-France (73 avenue de Paris 94165 Saint-Mande Cedex - France)
49GEOMAR - Helmholtz Centre for Ocean Research [Kiel] (Wischhofstr. 1-3, 24148 Kiel - Germany)
50Imperial College London (South Kensington Campus, London SW7 2AZ - United Kingdom)
51JISAO - Joint Institute for the Study of the Atmosphere and Ocean (3737 Brooklyn Ave NE, Seattle, WA 98195 - United States)
52LDEO - Lamont-Doherty Earth Observatory (University of Columbia, Palisades, New York 10964 - United States)
53CSIRO - Commonwealth Scientific and Industrial Research Organisation [Canberra] (GPO Box 1700, Canberra ACT 2600 - Australia)
54WUR - Wageningen University and Research [Wageningen] (Droevendaalsesteeg 4, 6708 PB Wageningen - Netherlands)
55FALW - Faculty of Earth and Life Sciences [Amsterdam] (De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands - Netherlands)
56CIO - Centre for Isotope Research [Groningen] (Nijenborgh 4, 9747 AG Groningen, The Netherlands - Netherlands)
57Ocean Process Analysis Laboratory (United States)
58MOSAIC - Modélisation des Surfaces et Interfaces Continentales (LSCE. CEA Paris-Saclay. Orme des merisiers. 91190 Saint-Aubin. - France)
59MOHC - Met Office Hadley Centre (FitzRoy Road, Exeter, EX1 3PB - United Kingdom)
60MPI-BGC - Max Planck Institute for Biogeochemistry (Hans-Knoell-Str. 10, 07745 Jena - Germany)
61AOSC - Department of Atmospheric and Oceanic Science [College Park] (College Park, MD 20742 - United States)

Tóm tắt

Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe data sets and a methodology to quantify all major components of the global carbon budget, including their uncertainties, based on the combination of a range of data, algorithms, statistics, and model estimates and their interpretation by a broad scientific community. We discuss changes compared to previous estimates as well as consistency within and among components, alongside methodology and data limitations. CO2 emissions from fossil fuels and industry (EFF) are based on energy statistics and cement production data, while emissions from land-use change (ELUC), mainly deforestation, are based on combined evidence from land-cover-change data, fire activity associated with deforestation, and models. The global atmospheric CO2 concentration is measured directly and its rate of growth (GATM) is computed from the annual changes in concentration. The mean ocean CO2 sink (SOCEAN) is based on observations from the 1990s, while the annual anomalies and trends are estimated with ocean models. The variability in SOCEAN is evaluated with data products based on surveys of ocean CO2 measurements. The global residual terrestrial CO2 sink (SLAND) is estimated by the difference of the other terms of the global carbon budget and compared to results of independent dynamic global vegetation models forced by observed climate, CO2, and land-cover change (some including nitrogen–carbon interactions). We compare the mean land and ocean fluxes and their variability to estimates from three atmospheric inverse methods for three broad latitude bands. All uncertainties are reported as ±1σ, reflecting the current capacity to characterise the annual estimates of each component of the global carbon budget. For the last decade available (2005–2014), EFF was 9.0 ± 0.5 GtC yr−1, ELUC was 0.9 ± 0.5 GtC yr−1, GATM was 4.4 ± 0.1 GtC yr−1, SOCEAN was 2.6 ± 0.5 GtC yr−1, and SLAND was 3.0 ± 0.8 GtC yr−1. For the year 2014 alone, EFF grew to 9.8 ± 0.5 GtC yr−1, 0.6 % above 2013, continuing the growth trend in these emissions, albeit at a slower rate compared to the average growth of 2.2 % yr−1 that took place during 2005–2014. Also, for 2014, ELUC was 1.1 ± 0.5 GtC yr−1, GATM was 3.9 ± 0.2 GtC yr−1, SOCEAN was 2.9 ± 0.5 GtC yr−1, and SLAND was 4.1 ± 0.9 GtC yr−1. GATM was lower in 2014 compared to the past decade (2005–2014), reflecting a larger SLAND for that year. The global atmospheric CO2 concentration reached 397.15 ± 0.10 ppm averaged over 2014. For 2015, preliminary data indicate that the growth in EFF will be near or slightly below zero, with a projection of −0.6 [range of −1.6 to +0.5] %, based on national emissions projections for China and the USA, and projections of gross domestic product corrected for recent changes in the carbon intensity of the global economy for the rest of the world. From this projection of EFF and assumed constant ELUC for 2015, cumulative emissions of CO2 will reach about 555 ± 55 GtC (2035 ± 205 GtCO2) for 1870–2015, about 75 % from EFF and 25 % from ELUC. This living data update documents changes in the methods and data sets used in this new carbon budget compared with previous publications of this data set (Le Quéré et al., 2015, 2014, 2013). All observations presented here can be downloaded from the Carbon Dioxide Information Analysis Center (doi:10.3334/CDIAC/GCP_2015).

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