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  • Presentation | A42D: Remote Sensing of CH4 and CO2 from Space: The Expanding Observing System I Oral
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  • A42D-05: Was There a Tropical Land Carbon Sink During 2015-2023? Results from an Ensemble of Global Inversion Models Constrained by OCO-2 Version 11 and the Global In Situ Network.
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Author(s):
Sean Crowell, Organization Not Listed (First Author, Presenting Author)
David Baker, Colorado State University
Ian Baker, Colorado State University
Sourish Basu, NOAA, Global Monitoring Laboratory
Abhishek Chatterjee, California Institute of Technology
Frederic Chevallier, LSCE Laboratoire des Sciences du Climat et de l'Environnement
Fei Jiang, Nanjing University
Zhe Jin, Peking University
Matthew Johnson, Earth Science Division, NASA Ames Research Center
Aleya Kaushik, NOAA/ESRL, Global Monitoring Division
Junjie Liu, Jet Propulsion Laboratory, California Institute of Technology
Suman Maity, NIES National Institute of Environmental Studies
Shamil Maksyutov, NIES
Scot Miller, Johns Hopkins University
Kristan Morgan, Johns Hopkins University
Christopher O'Dell, Colorado State University
Sajeev Philip, Centre for Atmospheric Sciences, Indian Institute of Technology Delhi
Vivienne Payne, NASA Jet Propulsion Laboratory, California Institute of Technology
Andrew Schuh, Colorado State University
Kenneth Schuldt, Cooperative Institute for Research in Environmental Sciences
Brad Weir, NASA Goddard Space Flight Center


Satellites can be used to constrain surface flux of trace gases like carbon dioxide. We find that when we estimate fluxes with an ensemble of models using satellite and surface observations, our best estimate is that the Tropics, long held to be a persistent sink with fears of tipping to a source, have been a source or neutral since 2015.



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