| Title: |
The African Regional Greenhouse Gases Budget (2010–2019) |
| Authors: |
Ernst, Yolandi; Archibald, Sally; Balzter, Heiko; Chevallier, Frederic; Ciais, Philippe; Fischer, Carlos, Gonzalez; Gaubert, Benjamin; Higginbottom, Thomas; Higgins, Steven; Lawal, Shakirudeen; Lacroix, Fabrice; Lauerwald, Ronny; Lourenco, Mauro; Martens, Carola; Mengistu, Anteneh, G; Merbold, Lutz; Mitchard, Edward; Moyo, Mthokozisi; Nguyen, Hannah; O’sullivan, Michael; Rodríguez‐veiga, Pedro; Rosan, Thais; Rosentreter, Judith; Ryan, Casey; Scheiter, Simon; Sitch, Stephen; Stevens, Nicola; Tagesson, Torbern; Tian, Hanqin; Wang, Mengjia; Woon, Joel, S; Zheng, Bo; Zhou, Yong; Scholes, Robert, J |
| Contributors: |
University of the Witwatersrand Johannesburg (WITS); University of Leicester; Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS); AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Université Paris-Saclay; Interactions Sol Plante Atmosphère (UMR ISPA); Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Source: |
ISSN: 0886-6236. |
| Publisher Information: |
CCSD; American Geophysical Union |
| Publication Year: |
2024 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
Regional Carbon Cycle Assessment and Processes-2 termite herbivore and fire emissions from novel methods; Regional Carbon Cycle Assessment and Processes-2 termite; herbivore; and fire emissions from novel methods; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces; environment |
| Description: |
International audience ; As part of the REgional Carbon Cycle Assessment and Processes Phase 2 (RECCAP2) project, we developed a comprehensive African Greenhouse gases (GHG) budget covering 2000 to 2019 (RECCAP1 and RECCAP2 time periods), and assessed uncertainties and trends over time. We compared bottom‐up process‐based models, data‐driven remotely sensed products, and national GHG inventories with top‐down atmospheric inversions, accounting also for lateral fluxes. We incorporated emission estimates derived from novel methodologies for termites, herbivores, and fire, which are particularly important in Africa. We further constrained global woody biomass change products with high‐quality regional observations. During the RECCAP2 period, Africa's carbon sink capacity is decreasing, with net ecosystem exchange switching from a small sink of −0.61 ± 0.58 PgC yr −1 in RECCAP1 to a small source in RECCAP2 at 0.16 (−0.52/1.36) PgC yr −1 . Net CO 2 emissions estimated from bottom‐up approaches were 1.6 (−0.9/5.8) PgCO 2 yr −1 , net CH 4 were 77 (56.4/93.9) TgCH 4 yr −1 and net N 2 O were 2.9 (1.4/4.9) TgN 2 O yr −1 . Top‐down atmospheric inversions showed similar trends. Land Use Change emissions increased, representing one of the largest contributions at 1.7 (0.8/2.7) PgCO 2 eq yr −1 to the African GHG budget and almost similar to emissions from fossil fuels at 1.74 (1.53/1.96) PgCO 2 eq yr −1 , which also increased from RECCAP1. Additionally, wildfire emissions decreased, while fuelwood burning increased. For most component fluxes, uncertainty is large, highlighting the need for increased efforts to address Africa‐specific data gaps. However, for RECCAP2, we improved our overall understanding of many of the important components of the African GHG budget that will assist to inform climate policy and action. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
WOS: 001195880200001 |
| DOI: |
10.1029/2023gb008016 |
| Availability: |
https://hal.science/hal-04536918; https://hal.science/hal-04536918v1/document; https://hal.science/hal-04536918v1/file/Global%20Biogeochemical%20Cycles%20-%202024%20-%20Ernst%20-%20The%20African%20Regional%20Greenhouse%20Gases%20Budget%202010%202019.pdf; https://doi.org/10.1029/2023gb008016 |
| Rights: |
http://creativecommons.org/licenses/by-nc-nd/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.2736C3E0 |
| Database: |
BASE |