Brage Bremset Hansen
Biographic Data
| ID | 7993467 |
|---|---|
| NAME | Brage Bremset Hansen |
| GIVEN NAMES | Brage Bremset |
| FAMILY NAME | Hansen |
| SIGNATURE | HANSEN B B |
| AFFILIATIONS | Norwegian University of Science and Technology |
| ORCID | 0000-0001-8763-4361 |
| VERIFIED | Yes |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 6 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Basal ice but not summer temperature affects land surface greenness in parts of the landscape in high Arctic tundra
Climate warming in the Arctic is very strong compared to other regions on Earth. Arctic winter climate and cryosphere conditions are changing towards more frequent mild spells. Precipitation is often falling as rain, followed by the formation of basal ice on frozen ground, particularly in Gulf Stream-influenced climates as in Svalbard. Such conditions encapsulate tundra plants in ice for several months, which is assumed to reduce land surface gre…
Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic
Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across the Arctic tundra biome, we assembled dendroecologic…
Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: Detection of a climate-cryosphere regime shift
Arctic winters have become increasingly warmer and rainier. Where permafrost prevails, winter rain (or rain-on-snow; ROS) is known to occasionally cause extensive ice layers at the snow/ground interface, i.e. "basal ice" or "ground-ice", with potentially large ecological and socio-economic implications. However, an overall lack of field data has so far restricted our predictive understanding of the environmental conditions shaping spatiotemporal …
A new NDVI measure that overcomes data sparsity in cloud-covered regions predicts annual variation in ground-based estimates of high arctic plant productivity
Efforts to estimate plant productivity using satellite data can be frustrated by the presence of cloud cover. We developed a new method to overcome this problem, focussing on the high-arctic archipelago of Svalbard where extensive cloud cover during the growing season can prevent plant productivity from being estimated over large areas. We used a field-based time-series (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009) of live abovegro…
Changes in greening in the high Arctic: Insights from a 30 year AVHRR max NDVI dataset for Svalbard
Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over extended time periods.However, long time series datasets with global coverage have inmany cases too lowspatial resolution for sparsely vegetated high l…
Warmer and wetter winters: Characteristics and implications of an extreme weather event in the High Arctic
One predicted consequence of global warming is an increased frequency of extreme weather events, such as heat waves, droughts, or heavy rainfalls. In parts of the Arctic, extreme warm spells and heavy rain-on-snow (ROS) events in winter are already more frequent. How these weather events impact snow-pack and permafrost characteristics is rarely documented empirically, and the implications for wildlife and society are hence far from understood. He…
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Warmer and wetter winters: Characteristics and implications of an extreme weather event in the High Arctic
One predicted consequence of global warming is an increased frequency of extreme weather events, such as heat waves, droughts, or heavy rainfalls. In parts of the Arctic, extreme warm spells and heavy rain-on-snow (ROS) events in winter are already more frequent. How these weather events impact snow-pack and permafrost characteristics is rarely documented empirically, and the implications for wildlife and society are hence far from understood. He…
Changes in greening in the high Arctic: Insights from a 30 year AVHRR max NDVI dataset for Svalbard
Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal resolution, space-borne instruments are ideal to observe remote areas over extended time periods.However, long time series datasets with global coverage have inmany cases too lowspatial resolution for sparsely vegetated high l…
A new NDVI measure that overcomes data sparsity in cloud-covered regions predicts annual variation in ground-based estimates of high arctic plant productivity
Efforts to estimate plant productivity using satellite data can be frustrated by the presence of cloud cover. We developed a new method to overcome this problem, focussing on the high-arctic archipelago of Svalbard where extensive cloud cover during the growing season can prevent plant productivity from being estimated over large areas. We used a field-based time-series (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009) of live abovegro…
Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: Detection of a climate-cryosphere regime shift
Arctic winters have become increasingly warmer and rainier. Where permafrost prevails, winter rain (or rain-on-snow; ROS) is known to occasionally cause extensive ice layers at the snow/ground interface, i.e. "basal ice" or "ground-ice", with potentially large ecological and socio-economic implications. However, an overall lack of field data has so far restricted our predictive understanding of the environmental conditions shaping spatiotemporal …
Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic
Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across the Arctic tundra biome, we assembled dendroecologic…
Basal ice but not summer temperature affects land surface greenness in parts of the landscape in high Arctic tundra
Climate warming in the Arctic is very strong compared to other regions on Earth. Arctic winter climate and cryosphere conditions are changing towards more frequent mild spells. Precipitation is often falling as rain, followed by the formation of basal ice on frozen ground, particularly in Gulf Stream-influenced climates as in Svalbard. Such conditions encapsulate tundra plants in ice for several months, which is assumed to reduce land surface gre…
Arctic (6 works) · Climate change and permafrost (6 works) · Environmental Science (5 works) · Geography (5 works) · Climate change (4 works) · Physical geography (4 works) · Atmospheric sciences (3 works) · Climatology (3 works) · Cryospheric studies and observations (3 works) · Ecology (3 works)