Biogeosciences
Biogeosciences
BG
Articles | Volume 22, issue 1
Articles | Volume 22, issue 1
https://doi.org/10.5194/bg-22-19-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-19-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 1
Research article
 | 
03 Jan 2025
Research article |  | 03 Jan 2025

No increase is detected and modeled for the seasonal cycle amplitude of δ13C of atmospheric carbon dioxide

Fortunat Joos, Sebastian Lienert, and Sönke Zaehle

Viewed

Total article views: 1,499 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,264 203 32 1,499 106 29 51
  • HTML: 1,264
  • PDF: 203
  • XML: 32
  • Total: 1,499
  • Supplement: 106
  • BibTeX: 29
  • EndNote: 51
Views and downloads (calculated since 26 Jul 2024)
Cumulative views and downloads (calculated since 26 Jul 2024)

Viewed (geographical distribution)

Total article views: 1,499 (including HTML, PDF, and XML) Thereof 1,465 with geography defined and 34 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 24 Oct 2025
Download
Short summary
How plants regulate their exchange of CO2 and water with the atmosphere under global warming is critical for their carbon uptake and their cooling influence. We analyze the isotope ratio of atmospheric CO2 and detect no significant decadal trends in the seasonal cycle amplitude. The data are consistent with the regulation towards leaf CO2 and intrinsic water use efficiency growing proportionally to atmospheric CO2, in contrast to recent suggestions of downregulation of CO2 and water fluxes.
Read more
Share
Altmetrics
Final-revised paper
Preprint