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Atmosphere Physics

We are trying to find the physical mechanism that causes the light phenomena in Hessdalen

Hessdalen fenomenet
The Hessdalen phenomenon

Lights of unknown origin are frequently observed in the remote Hessdalen valley, and similar light phenomena have also been reported at several other locations around the world. We are aiming at discovering the physical mechanisms behind the generation of these lights, and the energy source that powers these phenomena.
 

EGU presentation
Professor Anna-Lena Kjøniksen presenting data at European Geosciences Union 
European Geosciences Union EGU
Results from the research in Hessdalen have been presented at EGU since 2011

Since the light-generating mechanisms and the nature of the lights themselves are not known, a multidisciplinary team of researchers are working together to gain a better understanding of the phenomena. The multidisciplinary field-work involves astrophysicists, geophysicists, physicists, chemists as well as electro and data engineers. 

EGU2018 Poster
Poster presentation at the European Geosciences Union General Assembly in 2018

We are utilizing a combination of different detection systems to record the lights and to examine the local environment for possible light generation mechanisms. In addition to visual observations, photographs, and films, the phenomena have also been detected by RADAR. Attempts to record the phenomena by other methods have so far resulted in ambiguous results.

Hessdalen observatory
Hessdalen Observatory at 975m altitude
Computer room
Computer room inside Hessdalen Observatory
Tent base
Professor Anna-Lena Kjøniksen at RADAR tent base Skarvan 975m

The research group operates 3 permanent research stations in the Hessdalen area, Røros, Norway. The first station was made operational in 1998. In addition, field trips to record the phenomena are usually conducted 1-2 times each year.
We have recently started a survey of the geological features in the region.
 

N-S-E-W from Hessdalen Observatory
N-S-E-W view of Hessdalen seen from Hessdalen Observatory in winter 2025
Hessdalen Observatory summer view
Hessdalen Observatory and lake Øyungen towards south-west

In 2018, Hessdalen Observatory was established on the mountain top SKARVAN at 975m altitude. The observatory consists of 3 containers equipped with suncells and methanol fuel cell for power supply. It has kitchen, toilet and accommodation for 4 researhers at all seasons. In this subarctic area, temperatures can fall below -30 Celcius and wind speed can pass 32m/s during winter storms. This remote and isolated mountaintop is ideal for observation of the nightsky and the aurora borealis. The Hessdalen phenomena are often observed in combination with Aurora Borealis.
 

Hessdalen phenomena and Aurora Borealis
The Hessdalen phenomena over the Øyungen lake under the green Aurora Borealis light
Aurora Borealis over Hessdalen Obsewrvatory
Aurora Borealis enlights the sky green over Hessdalen Observatory
Nigthsky over Hessdalen
Nigthsky over Hessdalen Observatory colored green by Aurora Borealis

 

 

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Published Apr. 26, 2018 1:11 PM - Last modified May 6, 2026 2:07 PM