Biogeochemical and biophysical responses to episodes of wildfire smoke from natural ecosystems  in southwestern British Columbia, Canada

Lee, Sung-Ching; Knox, Sara H.; McKendry, Ian; Black, T. Andrew

doi:https://doi.org/10.5194/acp-22-2333-2022

Articles | Volume 22, issue 4

https://doi.org/10.5194/acp-22-2333-2022

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

https://doi.org/10.5194/acp-22-2333-2022

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

Articles | Volume 22, issue 4

Research article

|

21 Feb 2022

Research article |

| 21 Feb 2022

Biogeochemical and biophysical responses to episodes of wildfire smoke from natural ecosystems in southwestern British Columbia, Canada

Sung-Ching Lee, Sara H. Knox, Ian McKendry, and T. Andrew Black

Supplement

https://doi.org/10.5194/acp-22-2333-2022-supplement

Data sets

AmeriFlux BASE CA-DBB Delta Burns Bog, Ver (Vol. 2-5) A. Christen and S. Knox https://doi.org/10.17190/AMF/1543378

AmeriFlux BASE CA-Ca3 British Columbia - Pole sapling Douglas-fir stand, Ver. 3-5 T. A. Black https://doi.org/10.17190/AMF/1480302

Model code and software

"amerifluxr v1.0.0." Computer software H. Chu and K. Hufkens https://github.com/chuhousen/amerifluxr

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Short summary

Wildfire smoke alters land–atmosphere exchange. Here, measurements in a forest and a wetland during four smoke episodes over four summers showed that impacts on radiation and heat budget were the greatest when smoke arrived in late summer. Both sites sequestered more CO₂ under smoky days, partly due to diffuse light, but emitted CO₂ when smoke was dense. This kind of field study is important for validating predictions of smoke–productivity feedbacks and has climate change implications.