Frost days in the beginning of the growing  season for Norway

Tajet, Helga Therese Tilley; Gangstø, Reidun; Dobler, Andreas; Hanssen-Bauer, Inger; Hygen, Hans Olav

doi:10.5194/asr-23-33-2026

Articles | Volume 23

https://doi.org/10.5194/asr-23-33-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/asr-23-33-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23

08 Oct 2026

| 08 Oct 2026

Frost days in the beginning of the growing season for Norway

Helga Therese Tilley Tajet, Reidun Gangstø, Andreas Dobler, Inger Hanssen-Bauer, and Hans Olav Hygen

Data sets

seNorge_2018 daily mean temperature 1957-2019 C. Lussana https://doi.org/10.5281/zenodo.3923706

seNorge_2018 daily minimum temperature 1957-2019 C. Lussana https://doi.org/10.5281/zenodo.3923697

seNorge_2018 v20.05 daily mean, minimum and maximum temperatures and total precipitation amounts for year 2020 A. Dobler and C. Lussana https://doi.org/10.5281/zenodo.17293482

Projected changes in climate and hydrological indices for Norway for 2041-2070 and 2071-2100 A. Dobler et al. https://doi.org/10.21343/f828-rv60

Short summary

Frost early in the growing season affects many crops and plant species. In Norway, warm early springs can trigger early flowering, followed by cold spells causing frost damage. Although warming extends the growing season, frost risk may increase at its start or end. At present, the early-season risk is highest in lowland South Norway, especially the southeast, and has increased most along the west coast. Future projections indicate an increasing risk along the coast, but decreasing risk inland.