Multi-year observations reveal a larger than expected autumn respiration signal across northeast Eurasia

Byrne, Brendan; Liu, Junjie; Yi, Yonghong; Chatterjee, Abhishek; Basu, Sourish; Cheng, Rui; Doughty, Russell; Chevallier, Frédéric; Bowman, Kevin W.; Parazoo, Nicholas C.; Crisp, David; Li, Xing; Xiao, Jingfeng; Sitch, Stephen; Guenet, Bertrand; Deng, Feng; Johnson, Matthew S.; Philip, Sajeev; McGuire, Patrick C.; Miller, Charles E.

doi:https://doi.org/10.5194/bg-19-4779-2022

Articles | Volume 19, issue 19

https://doi.org/10.5194/bg-19-4779-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-4779-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 19

Research article

|

12 Oct 2022

Research article |

| 12 Oct 2022

Multi-year observations reveal a larger than expected autumn respiration signal across northeast Eurasia

Brendan Byrne, Junjie Liu, Yonghong Yi, Abhishek Chatterjee, Sourish Basu, Rui Cheng, Russell Doughty, Frédéric Chevallier, Kevin W. Bowman, Nicholas C. Parazoo, David Crisp, Xing Li, Jingfeng Xiao, Stephen Sitch, Bertrand Guenet, Feng Deng, Matthew S. Johnson, Sajeev Philip, Patrick C. McGuire, and Charles E. Miller

Supplement

https://doi.org/10.5194/bg-19-4779-2022-supplement

Data sets

Global Fire Emissions Database J. T. Randerson, G. R. van der Werf, L. Giglio, N. Andela, and A. Halota, https://www.globalfiredata.org/

OCO-2 Level 2 bias-corrected XCO2 and other select fields from the full-physics retrieval aggregated as daily files, Retrospective processing V9r OCO-2 Science Team/Michael Gunson, Annmarie Eldering https://doi.org/10.5067/W8QGIYNKS3JC

FluxSat J. Joiner https://avdc.gsfc.nasa.gov/pub/tmp/FluxSat_GPP/

GOSIF GPP J. Xiao and L. Xing http://data.globalecology.unh.edu/

Copernicus Climate Change Service (C3S) J. Muñoz Sabater https://doi.org/10.24381/cds.68d2bb30

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Short summary

Plants draw CO₂ from the atmosphere during the growing season, while respiration releases CO₂ to the atmosphere throughout the year, driving seasonal variations in atmospheric CO₂ that can be observed by satellites, such as the Orbiting Carbon Observatory 2 (OCO-2). Using OCO-2 X_CO₂ data and space-based constraints on plant growth, we show that permafrost-rich northeast Eurasia has a strong seasonal release of CO₂ during the autumn, hinting at an unexpectedly large respiration signal from soils.