Snow–vegetation–atmosphere interactions in alpine tundra

Pirk, Norbert; Aalstad, Kristoffer; Yilmaz, Yeliz A.; Vatne, Astrid; Popp, Andrea L.; Horvath, Peter; Bryn, Anders; Vollsnes, Ane Victoria; Westermann, Sebastian; Berntsen, Terje Koren; Stordal, Frode; Tallaksen, Lena Merete

doi:https://doi.org/10.5194/bg-20-2031-2023

Articles | Volume 20, issue 11

https://doi.org/10.5194/bg-20-2031-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-2031-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 11

Research article

|

06 Jun 2023

Research article |

| 06 Jun 2023

Snow–vegetation–atmosphere interactions in alpine tundra

Norbert Pirk, Kristoffer Aalstad, Yeliz A. Yilmaz, Astrid Vatne, Andrea L. Popp, Peter Horvath, Anders Bryn, Ane Victoria Vollsnes, Sebastian Westermann, Terje Koren Berntsen, Frode Stordal, and Lena Merete Tallaksen

Supplement

https://doi.org/10.5194/bg-20-2031-2023-supplement

Data sets

Resources for "Snow-vegetation-atmosphere interactions in alpine tundra" Norbert Pirk, Kristoffer Aalstad, Yeliz A. Yilmaz, Astrid Vatne, Andrea L. Popp, Peter Horvath, Anders Bryn, Ane Victoria Vollsnes, Sebastian Westermann, Terje Koren Berntsen, Frode Stordal, and Lena Merete Tallaksen https://doi.org/10.5281/zenodo.7566641

geco-nhm/NiN\_Finse: Finse\_publication (finse) Peter Horvath https://doi.org/10.5281/zenodo.8005237

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Short summary

We measured the land–atmosphere exchange of CO₂ and water vapor in alpine Norway over 3 years. The extremely snow-rich conditions in 2020 reduced the total annual evapotranspiration to 50 % and reduced the growing-season carbon assimilation to turn the ecosystem from a moderate annual carbon sink to an even stronger source. Our analysis suggests that snow cover anomalies are driving the most consequential short-term responses in this ecosystem’s functioning.