Interannual variability in the Australian carbon cycle over 2015–2019, based on assimilation of Orbiting Carbon Observatory-2 (OCO-2) satellite data

Villalobos, Yohanna; Rayner, Peter J.; Silver, Jeremy D.; Thomas, Steven; Haverd, Vanessa; Knauer, Jürgen; Loh, Zoë M.; Deutscher, Nicholas M.; Griffith, David W. T.; Pollard, David F.

doi:https://doi.org/10.5194/acp-22-8897-2022

Articles | Volume 22, issue 13

https://doi.org/10.5194/acp-22-8897-2022

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

https://doi.org/10.5194/acp-22-8897-2022

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

Articles | Volume 22, issue 13

Research article

|

12 Jul 2022

Research article |

| 12 Jul 2022

Interannual variability in the Australian carbon cycle over 2015–2019, based on assimilation of Orbiting Carbon Observatory-2 (OCO-2) satellite data

Yohanna Villalobos, Peter J. Rayner, Jeremy D. Silver, Steven Thomas, Vanessa Haverd, Jürgen Knauer, Zoë M. Loh, Nicholas M. Deutscher, David W. T. Griffith, and David F. Pollard

Supplement

https://doi.org/10.5194/acp-22-8897-2022-supplement

Data sets

Data associated with the publication "Interannual variability in the Australian carbon cycle over 2015-2019, based on assimilation of OCO-2 satellite data". Y. Villalobos, P. J. Rayner, J. D. Silver, S. Thomas, V. Haverd, J. Knauer, Z. M. Loh, N. M. Deutscher, D. W. T. Griffith, and D. F. Pollard https://doi.org/10.5281/zenodo.6649768

Model code and software

Python 4-dimensional variational data assimilation tool S. Thomas https://github.com/steven-thomas/py4dvar

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Short summary

We study the interannual variability in Australian carbon fluxes for 2015–2019 derived from OCO-2 satellite data. Our results suggest that Australia's semi-arid ecosystems are highly responsive to variations in climate drivers such as rainfall and temperature. We found that high rainfall and low temperatures recorded in 2016 led to an anomalous carbon sink over savanna and sparsely vegetated regions, while unprecedented dry and hot weather in 2019 led to anomalous carbon release.