Ketil Isaksen
@ketilisaksen.bsky.social
Senior scientist at the Norwegian Meteorological Institute.
Focusing on permafrost thermal dynamics and climate change in the Arctic and European mountain areas. Long-term permafrost monitoring
Focusing on permafrost thermal dynamics and climate change in the Arctic and European mountain areas. Long-term permafrost monitoring
So in line with your results it may be reasonable that the high temperatures in August have been accompanied with enhanced drainage, thermal erosion and further subsidence, that intensified this rapid thaw and the collapse of the ice wedges
August 22, 2025 at 8:14 AM
So in line with your results it may be reasonable that the high temperatures in August have been accompanied with enhanced drainage, thermal erosion and further subsidence, that intensified this rapid thaw and the collapse of the ice wedges
Warming and thawing permafrost is confirmed by data from nearby monitoring stations. 2025 will be another bad year for the permafrost in Svalbard. Still some weeks left of the thawing season..
August 21, 2025 at 4:17 PM
Warming and thawing permafrost is confirmed by data from nearby monitoring stations. 2025 will be another bad year for the permafrost in Svalbard. Still some weeks left of the thawing season..
Thawing has intensified over the last few summers in Svalbard.
August 21, 2025 at 4:17 PM
Thawing has intensified over the last few summers in Svalbard.
Witnessing the rapid and extensive thawing of permafrost in Svalbard is truly impressive but deeply concerning
August 21, 2025 at 4:17 PM
Witnessing the rapid and extensive thawing of permafrost in Svalbard is truly impressive but deeply concerning
Den varmeste perioden kom mellom 12. og 25. juli og preget alle landsdeler.
July 30, 2025 at 1:26 PM
Den varmeste perioden kom mellom 12. og 25. juli og preget alle landsdeler.
Temperaturen under den varmeste 14-dagers perioden i juli 2025 er den desidert høyeste som er registrert for Norge
July 30, 2025 at 1:26 PM
Temperaturen under den varmeste 14-dagers perioden i juli 2025 er den desidert høyeste som er registrert for Norge
Spring 2025 is the second warmest for mainland Norway. Certain regions in Southern Norway have noted their highest mean temperature for spring since the series began in 1901, exceeding the prior record set in 2024 www.met.no/nyhetsarkiv/...
June 3, 2025 at 1:45 PM
Spring 2025 is the second warmest for mainland Norway. Certain regions in Southern Norway have noted their highest mean temperature for spring since the series began in 1901, exceeding the prior record set in 2024 www.met.no/nyhetsarkiv/...
The deep permafrost in Svalbard is warming at an accelerating pace
March 24, 2025 at 2:22 PM
The deep permafrost in Svalbard is warming at an accelerating pace
Data collected from weather stations in the eastern and northern areas of Svalbard reveal that winter temperatures (DJF) have experienced an increase exceeding 10 degrees since the winter of 1991/1992
March 8, 2025 at 9:18 AM
Data collected from weather stations in the eastern and northern areas of Svalbard reveal that winter temperatures (DJF) have experienced an increase exceeding 10 degrees since the winter of 1991/1992
This pronounced winter warm spell impacts the thermal conditions of near-surface soil and permafrost.
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January 20, 2025 at 8:56 AM
This pronounced winter warm spell impacts the thermal conditions of near-surface soil and permafrost.
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High mountain areas in southern Norway is experiencing some unusually mild weather these days. The currently highest weather station, located at Juvvasshøe at 1894 masl, recorded an average air temperature of +1.3 °C over the past five days
www.yr.no/en/statistic...
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www.yr.no/en/statistic...
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January 20, 2025 at 8:56 AM
High mountain areas in southern Norway is experiencing some unusually mild weather these days. The currently highest weather station, located at Juvvasshøe at 1894 masl, recorded an average air temperature of +1.3 °C over the past five days
www.yr.no/en/statistic...
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www.yr.no/en/statistic...
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🌏KLIMASTATUS 2024: Året da havene “kokte”🌊
Meld deg på og få innsikt fra eksperter om marine hetebølger, ekstremvær og fremtidens klima.
📅Ons. 8. jan. 2025 kl. 09:00
📍Marmorhallen / Direkte strømmet
👉Meld deg på: shorturl.at/VWhdx
Meld deg på og få innsikt fra eksperter om marine hetebølger, ekstremvær og fremtidens klima.
📅Ons. 8. jan. 2025 kl. 09:00
📍Marmorhallen / Direkte strømmet
👉Meld deg på: shorturl.at/VWhdx
December 19, 2024 at 12:35 PM
🌏KLIMASTATUS 2024: Året da havene “kokte”🌊
Meld deg på og få innsikt fra eksperter om marine hetebølger, ekstremvær og fremtidens klima.
📅Ons. 8. jan. 2025 kl. 09:00
📍Marmorhallen / Direkte strømmet
👉Meld deg på: shorturl.at/VWhdx
Meld deg på og få innsikt fra eksperter om marine hetebølger, ekstremvær og fremtidens klima.
📅Ons. 8. jan. 2025 kl. 09:00
📍Marmorhallen / Direkte strømmet
👉Meld deg på: shorturl.at/VWhdx
In ice-bearing permafrost, such as on Snøheim, the exchange of latent heat for phase change can significantly reduce warming rates when temperatures approach 0 °C and mask important changes of mountain permafrost substrates
December 16, 2024 at 9:02 PM
In ice-bearing permafrost, such as on Snøheim, the exchange of latent heat for phase change can significantly reduce warming rates when temperatures approach 0 °C and mask important changes of mountain permafrost substrates
When summer thaw exceeds winter freeze in a permafrost environment, a talik forms. Taliks are zones that remain unfrozen either above or within permafrost. In 2021/2022 a talik formed at our mountain permafrost monitoring site Snøheim in southern Norway
December 16, 2024 at 9:02 PM
When summer thaw exceeds winter freeze in a permafrost environment, a talik forms. Taliks are zones that remain unfrozen either above or within permafrost. In 2021/2022 a talik formed at our mountain permafrost monitoring site Snøheim in southern Norway
The first set of radar images from the Copernicus Sentinel-1C, featuring a high-performance C-band synthetic aperture radar (SAR) instrument, has been successfully acquired over the eastern part of Svalbard www.esa.int/Applications...
December 13, 2024 at 2:22 PM
The first set of radar images from the Copernicus Sentinel-1C, featuring a high-performance C-band synthetic aperture radar (SAR) instrument, has been successfully acquired over the eastern part of Svalbard www.esa.int/Applications...
In contrast, Tromsø, located in Northern Norway, recorded 91 cm on December 4th, marking the highest level ever recorded at this station for this date since the beginning of observations in 1920 cryo.met.no/sites/cryo.m...
December 4, 2024 at 12:42 PM
In contrast, Tromsø, located in Northern Norway, recorded 91 cm on December 4th, marking the highest level ever recorded at this station for this date since the beginning of observations in 1920 cryo.met.no/sites/cryo.m...
Today, Tafjord recorded a temperature of 18.7 °C, likely marking a new national record for December in Norway. The previous record, set in 1998, was 18.3 °C in Sunndalsøra www.yr.no/en/statistic...
December 1, 2024 at 12:06 PM
Today, Tafjord recorded a temperature of 18.7 °C, likely marking a new national record for December in Norway. The previous record, set in 1998, was 18.3 °C in Sunndalsøra www.yr.no/en/statistic...
In Svalbard, the summers of 2023 and 2024 were distinguished by an extraordinary deepening of the active layer into the permafrost, reflecting a substantial rise when compared to the record levels recorded in the previous years
November 25, 2024 at 10:14 PM
In Svalbard, the summers of 2023 and 2024 were distinguished by an extraordinary deepening of the active layer into the permafrost, reflecting a substantial rise when compared to the record levels recorded in the previous years