The state of global carbon cycle in 2020 and 2021

Junjie Liu1, David F Baker2, Sourish Basu3, Michael Bertolacci4, Kevin W Bowman5, Brendan K Byrne6, Abhishek Chatterjee5, Sean Crowell7, Frederic Chevallier8, Noel Cressie4, Feng Deng9, Wei He10, Rajesh Janardanan Achari11, Fei Jiang10, Matthew C Johnson12, Zhiqiang Liu13, Shamil S Maksyutov11, Scot M Miller14, Sajeev Philip15, Andrew E Schuh16, Jingfeng Xiao17, Ning Zeng18 and Andrew Zammit-Mangion19, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Colorado State University, CIRA, Fort Collins, DC, United States, (3)NOAA, Global Monitoring Laboratory, Boulder, United States, (4)University of Wollongong, School of Mathematics and Applied Statistics, Wollongong, NSW, Australia, (5)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (6)Jet Propulsion Laboratory, Pasadena, CA, United States, (7)University of Oklahoma, Norman, OK, United States, (8)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (9)University of Toronto, Physics, Toronto, ON, Canada, (10)Nanjing University, Nanjing, China, (11)NIES, Tsukuba, Japan, (12)KBR, NASA Goddard Space Flight Center, Greenbelt, United States, (13)Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, MD, United States, (14)Harvard University, Cambridge, United States, (15)Universities Space Research Association, NASA Ames Research Center, Mountain View, United States, (16)Colorado State University, CIRA, Fort Collins, CO, United States, (17)University of New Hampshire, Durham, United States, (18)University of Maryland, College Park, MD, United States, (19)University of Bristol, Bristol, United Kingdom