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AR6 WGI Report – List of Corrigenda to Be Implemented the Corrigenda Listed Below Will Be Implemented in the Supp AR6 WGI Report – List of corrigenda to be implemented The corrigenda listed below will be implemented in the Supp. Material during copy-editing. CHAPTER 5 SUPPLEMENTARY MATERIAL Document Section Page :Line Detailed info on correction to make (Chapter, (based on Annex, Supp. the final Mat…) pdf FGD version) 5SM Table For “North Replace “Merged ship occ” by “Merged ship SM.3 Pacific, occupations” NP-STSS: 5SM 5.SM.4 5.SM-20:- In Table 5.SM.6: Row 1, Column 1: “Figure number / Table number / Chapter section (for calculations)” replace with “Figure number” 5SM Update the Data Table with omitted data citations for climate model data. 1 Final Government Distribution 5.SM IPCC AR6 WGI 1 5.SM Chapter 5: Global Carbon and other Biogeochemical Cycles 2 and Feedbacks – Supplementary Material 3 4 5 6 Coordinating Lead Authors: 7 Josep G. Canadell (Australia), Pedro M.S. Monteiro (South Africa) 8 9 10 11 Lead Authors: 12 Marcos H. Costa (Brazil), Leticia Cotrim da Cunha (Brazil), Peter M. Cox (United Kingdom), Alexey V. 13 Eliseev (Russian Federation), Stephanie Henson (United Kingdom), Masao Ishii (Japan), Samuel Jaccard 14 (Switzerland), Charles Koven (United States of America), Annalea Lohila (Finland), Prabir K. Patra 15 (Japan/India), Shilong Piao (China), Joeri, Rogelj (United Kingdom/Belgium), Stephen Syampungani 16 (Zambia), Sönke Zaehle (Germany), Kirsten Zickfeld (Canada/Germany) 17 18 19 20 Contributing Authors: 21 Georgii A. Alexandrov (Russian Federation), Govindasamy Bala (India/ United States of America), Laurent 22 Bopp (France), Lena Boysen (Germany), Long Cao (China), Naveen Chandra (Japan/India), Philippe Ciais 23 (France), Sergey N. Denisov (Russian Federation), Frank J. Dentener (EU, The Netherlands),EDITS Hervé 24 Douville (France), Amanda Fay (United States of America), Piers Forster (United Kingdom), Baylor Fox- 25 Kemper (United States of America), Pierre Friedlingstein (United Kingdom), Weiwei Fu (United States of 26 America /China), Sabine Fuss (Germany), Véronique Garçon (France), Bettina Gier (Germany), Nathan P. 27 Gillett (Canada), Luke Gregor (Switzerland/South Africa),VERSION Karsten Haustein (United Kingdom /Germany), 28 Vanessa Haverd (Australia), Jian He (United States of America /China), Helene T. Hewitt (United 29 Kingdom), Forrest M. Hoffman (United States of America), Tatiana Ilyina (Germany), Robert Jackson 30 (United States of America), Christopher Jones (United Kingdom), David P. Keller (Germany/ United States 31 of America), Lester Kwiatkowski (France/ United Kingdom), Robin D. Lamboll (United Kingdom/United 32 States of America, United Kingdom), Xin Lan (United States of AmericaFINAL/China), Charlotte Laufkötter 33 (Switzerland/Germany), Corinne Le Quéré (United Kingdom), Andrew Lenton (Australia), Jared Lewis 34 (Australia/New Zealand), Spencer Liddicoat (United Kingdom), Laura Lorenzoni (United States of 35 America/Venezuela), Nicole Lovenduski (United States of America), Andrew H. MacDougall (Canada), 36 Sabine Mathesius (Canada/Germany), Damon H. MatthewsTO (Canada), Malte Meinshausen 37 (Australia/Germany), Igor I. Mokhov (Russian Federation), Vaishali Naik (United States of America), 38 Zebedee R. J. Nicholls (Australia), Intan Suci Nurhati (Indonesia), Michael O’Sullivan (United Kingdom), 39 Glen Peters (Norway), Julia Pongratz (Germany), Benjamin Poulter (United States of America), Jean- 40 Baptiste Sallée (France), Marielle Saunois (France), Edward A.G. Schuur (United States of America), Sonia 41 I. Seneviratne (Switzerland), Ann Stavert (Australia), Parvadha Suntharalingam (United Kingdom/United 42 States of America), Kaoru Tachiiri (Japan), Jens Terhaar (Switzerland/Germany), Rona Thompson (Norway, 43 Luxembourg/NewACCEPTED Zealand), Hanqin Tian (United States of America), Jocelyn Turnbull (New Zealand), 44 Sergio M. Vicente-Serrano (Spain), Xuhui Wang (China), Rik Wanninkhof (United States of America), Phil 45 Williamson (United Kingdom), 46 47 48 49 Review Editors: 50 Victor BrovkinSUBJECT (Germany/Russian Federation), Richard A. Feely (United States of America) 51 52 53 54 Chapter Scientist: 55 Alice D. Lebehot (South Africa/France) 5SM-1 Total pages: 51 Final Government Distribution 5.SM IPCC AR6 WGI 1 This Supplementary Material should be cited as: 2 Josep G. Canadell, J. G., P. M. S. Monteiro, M. H. Costa, L. Cotrim da Cunha, P. M. Cox, A. V. Eliseev, S. 3 Henson, M. Ishii, S. Jaccard, C. Koven, A. Lohila, P. K. Patra, S. Piao, J. Rogelj, S. Syampungani, S. Zaehle, 4 K. Zickfeld, 2021, Global Carbon and other Biogeochemical Cycles and Feedbacks Supplementary Material. 5 In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth 6 Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. 7 Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. 8 Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]. 9 Available from https://ipcc.ch/static/ar6/wg1. 10 11 12 Date: August 2021 13 14 15 16 This document is subject to copy-edit, corrigenda and trickle backs. EDITS VERSION FINAL TO ACCEPTED SUBJECT 5SM-1 bis Total pages: 51 Final Government Distribution 5.SM IPCC AR6 WGI 1 Table of Contents 2 3 5.SM.1 Assessment of recent advances in observational and modelling methodologies ........................... 3 4 5.SM.2 SeaFlux method: a 4 step methodological approach to address the first order inconsistencies 5 between the ocean six (6) CO2 flux observational based products used in Chapter 5 (5.2.3.1) .... 3 6 5.SM.3 Biogeophysical sequestration potential of ocean-based CDR methods ......................................... 7 7 5.SM.4 Data Table ................................................................................................................................... 20 8 References ....................................................................................................................................................... 39 9 10 ACCEPTED VERSION SUBJECT TO FINAL EDITS Do Not Cite, Quote or Distribute 5SM-2 Total pages: 51 Final Government Distribution 5.SM IPCC AR6 WGI 1 5.SM.1 Assessment of recent advances in observational and modelling methodologies 2 3 Since AR5 three major advances have had a decisive impact on the levels of confidence of the trends and the 4 variability of both air-sea fluxes of CO2 and its storage in the ocean interior. These are (i) the new 5 observations and observational-based products for decadal variability in ocean uptake fluxes and ocean 6 storage, (ii) the observational-based product changes in amplitude of the seasonal cycle of surface ocean 7 pCO2 (the partial pressure of CO2 expressed in atm) in response to changing ocean carbonate chemistry, 8 and (iii) spatially-resolved pCO2 seasonal climatologies for the global coastal ocean (Gruber et al., 2019a; 9 (Rödenbeck et al., 2015; Landschützer et al., 2016, 2018); Laruelle et al., 2017). These advances were made 10 possible by the simultaneous global coordination of observations and data quality control through the surface 11 ocean CO2 atlas (SOCAT) and Lamont-Doherty Earth observatory (LDEO) as well as the rapid adoption of a 12 large variety of interpolation techniques for the surface layer and their inter-comparison to constrain 13 uncertainties and biases (Rödenbeck et al., 2015; Bakker et al., 2016; Landschützer et al., 2016; McKinley et 14 al., 2017; Gregor et al., 2019; Gruber et al., 2019b). 15 16 Advances in the multiple methods of interpolating surface ocean pCO2 observations provide a medium to 17 high confidence in the air-sea fluxes of CO2 over most of the ocean (Rödenbeck et al., 2015; Landschützer et 18 al., 2016; Gregor et al., 2019). However, there is low confidence in those fluxes for important regions such as 19 the Southern Ocean, the Arctic, South Pacific as well as coastal oceans (Laruelle et al., 2017; Gregor et al., 20 2019; Gruber et al., 2019c); while these regions remain temporally and spatially under sampled the 21 development and deployment of carbon and biogeochemically enabled Argo autonomous floats is starting to 22 close those gaps (Williams et al., 2017; Gray et al., 2018; Claustre et al., 2020). 23 EDITS 24 Similarly, for anthropogenic carbon storage in the ocean interior (i.e. below the mixed layer) the global 25 ocean ship-based hydrographic investigations programme (GO-SHIP) coupled to the global ocean data 26 analysis project for carbon (GLODAPv2) were central to supporting the advances in characterising changes 27 to the storage in the ocean interior by generating a new consistent,VERSION quality-controlled, global dataset, 28 allowing the decadal variability in ocean carbon storage to be quantified (Lauvset et al., 2016; Olsen et al., 29 2016; Clement and Gruber, 2018; Gruber et al., 2019b). There is high confidence that a significant advance 30 since AR5 and SROCC is the improved characterization of the variability of the ocean CO2 storage trends in 31 space and time, which has notable decadal and regional scale variability (Tanhua et al., 2017; Gruber et al., 32 2019b) (SROCC Chapters 3 and 5). FINAL 33 34 Since it is also unequivocal that anthropogenic CO2 taken up from the atmosphere into the ocean surface 35 layer is further transported into the ocean interior through ocean ventilation processes including vertical 36 mixing, diffusion, subduction and meridional overturninTOg circulations (Sallée et al., 2012; Nakano et al., 37 2015; Bopp et al., 2015; Iudicone et
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