A5017538085- Cryospheric studies and observations
- Climate change and permafrost
- Winter Sports Injuries and Performance
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Methane Hydrates and Related Phenomena
- Geophysical Methods and Applications
- Climate variability and models
- Geological Studies and Exploration
- Indigenous Studies and Ecology
- Atmospheric and Environmental Gas Dynamics
- Wildlife Ecology and Conservation
- Marine animal studies overview
- Planetary Science and Exploration
- Atmospheric chemistry and aerosols
- Arctic and Russian Policy Studies
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Astro and Planetary Science
- Climate Change and Environmental Impact
- Air Quality and Health Impacts
- Icing and De-icing Technologies
- 3D Surveying and Cultural Heritage
Norwegian Polar Institute
2016-2025
Loughborough University
2023
Tallinn University of Technology
2023
The FRAM Centre
2017-2018
University of Sheffield
2006
Abisko Scientific Research Station
2006
Lund University
2006
Institute of Arctic and Alpine Research
2004
Norsk Hydro (Norway)
2003
Norwegian Water Resources and Energy Directorate
2003
Abstract. We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor subglacial bed elevation Antarctic south 60° S. derived these using data from variety sources, including many substantial surveys completed since original Bedmap compilation (Bedmap1) in 2001. In particular, Bedmap2 ice thickness grid is made 25 million measurements, over two orders magnitude more than were used Bedmap1. most parts Antarctica landscape visible much...
Abstract. We present a multi-temporal digital inventory of Svalbard glaciers with the most recent from late 2000s containing 33 775 km2 covering 57% total land area archipelago. At present, 68% glacierized drains through tidewater that have terminus width ~ 740 km. The over entire archipelago has decreased by an average 80 a−1 past 30 yr, representing reduction 7%. For sample 400 (10 000 km2) in south and west Spitsbergen, three inventories are available 1930/60s, 1990 2007 which we...
Abstract. Two ice-dynamic transitions of the Antarctic ice sheet – boundary grounded features and freely-floating are mapped at 15-m resolution by participants International Polar Year project ASAID using customized software combining Landsat-7 imagery ICESat/GLAS laser altimetry. The is 53 610 km long; 74 % abuts to floating shelves or outlet glaciers, 19 adjacent open sea-ice covered ocean, 7 terminates on land. boundary, called here hydrostatic line, most landward position that expresses...
One predicted consequence of global warming is an increased frequency extreme weather events, such as heat waves, droughts, or heavy rainfalls. In parts the Arctic, warm spells and rain-on-snow (ROS) events in winter are already more frequent. How these impact snow-pack permafrost characteristics rarely documented empirically, implications for wildlife society hence far from understood. Here we characterize document effects spell ROS event that occurred High Arctic Svalbard January–February...
Since the first estimates of Svalbard-wide glacier mass balance were made in early 2000s, there has been great progress remote sensing and modelling balance, existing field records have extended, at new locations added, considerable environmental change. There is a wide spread available both total climatic but overall agreement that glaciers on Svalbard losing since 1960s, with tendency towards more negative 2000. We define criteria to select data are representative high credibility; this...
Abstract We present Bedmap3, the latest suite of gridded products describing surface elevation, ice-thickness and seafloor subglacial bed elevation Antarctic south 60 °S. Bedmap3 incorporates adds to all post-1950s datasets previously used for Bedmap2, including 84 new aero-geophysical surveys by 15 data providers, an additional 52 million points 1.9 line-kilometres measurement. These efforts have filled notable gaps in major mountain ranges deep interior East Antarctica, along West...
We compare satellite altimetry from the Ice, Cloud, and Land Elevation Satellite (ICESat, 2003–2007) to older topographic maps digital elevation models (1965–1990) calculate long‐term changes of glaciers on Svalbard Archipelago. Results indicate significant thinning at most glacier fronts with either slight or thickening in accumulation areas, except for that surged which show ablation area areas. The negative geodetic balances occur south have surged, while least northeast quiescent phase a...
Geodetic measurements indicate that a number of glaciers in western Svalbard ranging size from 5–1000 km 2 are losing mass at an accelerating rate. The average thinning rate for Midtre Lovénbreen, the glacier with best data coverage, has increased steadily since 1936. Thinning rates 2003–2005 more than 4 times first measurement period 1936–1962 and significantly greater presented previously. On Slakbreen, latest 1990–2003 1961–1977. several along previously measured airborne lidar profile...
Abstract. We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor subglacial bed elevation Antarctic south 60° S. derived these using data from variety sources, including many substantial surveys completed since original Bedmap compilation (Bedmap1) in 2001. In particular, Bedmap2 ice thickness grid is made 25 million measurements, over two orders magnitude more than were used Bedmap1. most parts Antarctica landscape visible much...
Gain or loss of the freshwater stored in Svalbard glaciers has both global implications for sea level and, on a more local scale, impacts upon hydrology rivers and flux to fjords. This paper gives an overview potential runoff from glaciers. The basins different scales is quantified. In small (A < 10 km2), extra due negative mass balance related proportion glacier cover can at present yield than 20% higher if were equilibrium with climate. does not apply generally ice masses Svalbard, which...
Across the Arctic, heavy rain-on-snow (ROS) is an "extreme" climatic event that expected to become increasingly frequent with global warming. This has potentially large ecosystem implications through changes in snowpack properties and ground-icing, which can block access herbivores' winter food thereby suppress their population growth rates. However, supporting empirical evidence for this still limited. We monitored late examine causes consequences of ground-icing a Svalbard reindeer...
This paper presents the results of a distributed, two‐dimensional surface energy balance model used to investigate spatial and temporal variations in Midre Lovénbreen, small valley glacier northwest Spitsbergen, Svalbard, over summer 2000. We utilize high‐resolution airborne lidar data derive digital elevation surrounding topography, on which is computed, driven by meteorological obtained from station located synoptic maintained at nearby Ny‐Ålesund research base. Given topographic data, we...
Abstract. The climate in Svalbard is undergoing amplified change compared to the global mean. This has major implications for runoff from glaciers and seasonal snow on land. We use a coupled energy balance–subsurface model, forced with downscaled regional model fields, apply it both glacier-covered land areas Svalbard. generates long-term (1957–2018) distributed dataset of climatic mass balance (CMB) glaciers, conditions, 1 km×1 km spatial 3-hourly temporal resolution. Observational data...
Arctic winters have become increasingly warmer and rainier. Where permafrost prevails, winter rain (or rain-on-snow) is known to occasionally cause extensive ice layers at the snow/ground interface, i.e. 'basal ice' or 'ground ice', with potentially large ecological socio-economic implications. However, an overall lack of field data has so far restricted our predictive understanding environmental conditions shaping spatiotemporal variation in basal ice. Here, we use time-series spatially...
Abstract Compared to other Arctic ice masses, Svalbard glaciers are low-elevated with flat interior accumulation areas, resulting in a marked peak their current hypsometry (area-elevation distribution) at ~450 m above sea level. Since summer melt consistently exceeds winter snowfall, these low-lying can only survive by refreezing considerable fraction of surface and rain the porous firn layer covering zones. We use high-resolution climate model show that modest atmospheric warming mid-1980s...
Abstract Svalbard climate is undergoing amplified change with respect to the global mean. Changing conditions directly affect evolution of seasonal snowpack, through its impact on accumulation, melt, and moisture exchange. We analyze long‐term trends spatial patterns snow in between 1961 2012. Downscaled regional model output used drive a modeling system (SnowModel), coupled modules simulating surface energy balance snowpack evolution. The precipitation forcing calibrated validated against...
Abstract The Radar Imager for Mars’ Subsurface Experiment (RIMFAX) is a Ground Penetrating on the Mars 2020 mission’s Perseverance rover, which planned to land near deltaic landform in Jezero crater. RIMFAX will add new dimension rover investigations of by providing capability image shallow subsurface beneath rover. principal goals investigation are structure, and provide information regarding composition. Data provided aid Perseverance’s mission explore ancient habitability its field area...
The Radar Imager for Mars Subsurface Experiment instrument has conducted the first rover-mounted ground-penetrating radar survey of Martian subsurface. A continuous image acquired over Perseverance rover’s initial ~3-kilometer traverse reveals electromagnetic properties and bedrock stratigraphy Jezero crater floor to depths ~15 meters below surface. presence ubiquitous strongly reflecting layered sequences that dip downward at angles up 15 degrees from horizontal in directions normal...
Abstract. One of the key components this research has been mapping Antarctic bed topography and ice thickness parameters that are crucial for modelling flow hence predicting future loss ensuing sea level rise. Supported by Scientific Committee on Research (SCAR), Bedmap3 Action Group aims not only to produce new gridded maps international scientific community, but also standardize make available all geophysical survey data points used in producing Bedmap products. Here, we document latest...
Abstract. The Svalbard archipelago is particularly sensitive to climate change due the relatively low altitude of its main ice fields and geographical location in higher North Atlantic, where effect Arctic amplification more significant. largest temperature increases have been observed during winter, but increasing summer temperatures, above melting point, led increased glacier melt. Here, we evaluate impact this melt on preservation oxygen isotope (δ18O) signal firn records. δ18O commonly...