Articles | Volume 16, issue 12
https://doi.org/10.5194/amt-16-3299-2023
https://doi.org/10.5194/amt-16-3299-2023
Research article
 | 
30 Jun 2023
Research article |  | 30 Jun 2023

Reducing errors on estimates of the carbon uptake period based on time series of atmospheric CO2

Theertha Kariyathan, Ana Bastos, Julia Marshall, Wouter Peters, Pieter Tans, and Markus Reichstein

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Limitations in the use of atmospheric CO2 observations to directly infer changes in the length of the biospheric carbon uptake period
Theertha Kariyathan, Ana Bastos, Markus Reichstein, Wouter Peters, and Julia Marshall
Atmos. Chem. Phys., 25, 7863–7878, https://doi.org/10.5194/acp-25-7863-2025,https://doi.org/10.5194/acp-25-7863-2025, 2025
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Cited articles

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The timing and duration of the carbon uptake period (CUP) are sensitive to the occurrence of major phenological events, which are influenced by recent climate change. This study presents an ensemble-based approach for quantifying the timing and duration of the CUP and their uncertainty when derived from atmospheric CO2 measurements with noise and gaps. The CUP metrics derived with the approach are more robust and have less uncertainty than when estimated with the conventional methods.
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