June 30, 2026
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BorealNet Observatory - Monitoring Norway's Forest Health
NMBU · NIBIO
A tree is thinner at the end of a warm day than it was at dawn, and swells again overnight. The dendrometers catch that at ten-minute resolution. The keys on each reading lead back to the logger it came from.
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Loading dendrometer series…
Pick a site on the map to see every layer recorded there.
Where - each pin is a logger at a plot. The live one pulses; click it to load its stem on the right.
What - the top line is measured stem radius (daily breathing on seasonal growth); below it, the water deficit we derive.
Trace - every reading carries its keys (station, box, serial) straight back to the raw table. Open, reproducible, citable.
What the forest stands on
Soil horizons surveyed at every site: a typical core from surface to depth. Switch between the simplified and original layer descriptions - the same cores, two layouts.
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Data: Lisa Åsgård, WP3 (preliminary)
The forest's spectral signature
Reflectance across the spectrum, aggregated into regions and pooled across every surveyed plot. Each box is the mean plus or minus one standard deviation, with the mean marked.
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20
Monitoring plots
10
Localities
2022
Monitoring since
642 m
Highest plot
About the Project
Norway is warming due to climate change. Rising temperatures and longer growing seasons may increase forest productivity - but extreme drought, late frosts, and sudden heat periods create competing pressures that are not yet fully understood.
BorealNet establishes a network of continuous monitoring plots across Norway, using dendrometers and field-survey protocols to measure how trees respond to these pressures.
Open Data
Field data is openly licensed under CC BY 4.0.
Collaborative
Field data is contributed by researchers across multiple institutions. BorealNet follows The Turing Way principles for reproducible research.
BorealNetDendrometer Sites
| Code | Locality | Category | Elev. (m) | Installed |
|---|---|---|---|---|
| P01 | Aremark | Reference | 142.0 | Apr 2022 |
| P02 | Aremark | Dry | 150.0 | Apr 2022 |
| P03 | Rømskog | Reference | 266.0 | Apr 2022 |
| P04 | Rømskog | Dry | 262.0 | Apr 2022 |
| P05 | Eidskog | Reference | 284.0 | Apr 2022 |
| P06 | Eidskog | Dry | 285.0 | Apr 2022 |
| P07 | Våler | Reference | 82.0 | Jun 2022 |
| P08 | Våler | Dry | 76.0 | Jun 2022 |
| P09 | Åsnes | Reference | 323.0 | May 2022 |
| P10 | Åsnes | Dry | 319.0 | May 2022 |
| P11 | Elverum | Reference | 270.0 | May 2022 |
| P12 | Elverum | Dry | 285.0 | May 2022 |
| P13 | Rena | Reference | 525.0 | May 2022 |
| P14 | Rena | Dry | 572.0 | May 2022 |
| P15 | Koppang | Reference | 642.0 | May 2022 |
| P16 | Koppang | Dry | 639.0 | May 2022 |
| P17 | Elvål south | Reference | 483.0 | Jun 2022 |
| P18 | Elvål south | Dry | 497.0 | Jun 2022 |
| P19 | Finstad north | Reference | 479.0 | Jun 2022 |
| P20 | Finstad north | Dry | 476.0 | Jun 2022 |
Latest News
June 30, 2026
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Are you studying forest change in Norway?
BorealNet is an open, collaborative network. Get involved, contribute field data, or use our open measurements in your own research.