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
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 XCO2 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.
Plants draw CO2 from the atmosphere during the growing season, while respiration releases CO2 to...