A5064995248- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Winter Sports Injuries and Performance
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Geological Modeling and Analysis
- Landslides and related hazards
- Adventure Sports and Sensation Seeking
- Soil Moisture and Remote Sensing
- Hydraulic Fracturing and Reservoir Analysis
- Marine animal studies overview
- Spacecraft and Cryogenic Technologies
- Big Data Technologies and Applications
- Oceanographic and Atmospheric Processes
- Methane Hydrates and Related Phenomena
- Reservoir Engineering and Simulation Methods
- Polar Research and Ecology
Norwegian Meteorological Institute
2021-2024
Swansea University
2015-2021
Norwegian Polar Institute
2017-2019
Meltwater discharge from tidewater glaciers impacts the adjacent marine environment. Due to global warming are retreating and will eventually terminate on land. Yet, mechanisms through which meltwater runoff subglacial influence primary production remain poorly understood, as data in close proximity glacier fronts scarce. Here, we show that bedrock characteristics of catchments control phytoplankton growth environment inside fjord, based collected Kongsfjorden, Svalbard 26 31 July 2017. In...
Supraglacial lake drainage events are common on the Greenland ice sheet. Observations west coast typically show an up-glacier progression of as annual melt extent spreads inland. We use a suite remote sensing and modeling techniques in order to study series lakes water-filled crevasses within 20 km terminus Helheim Glacier, southeast Greenland. Automatic classification surface water areas shows down-glacier drainage, which occurs majority years between 2007 2014. demonstrate that linear...
Abstract. In this paper, we study the effects of basal friction, sub-aqueous undercutting and glacier geometry on calving process by combining six different models in an offline-coupled workflow: a continuum–mechanical ice flow model (Elmer/Ice), climatic mass balance model, simple subglacial hydrology plume discrete particle to investigate fracture dynamics (Helsinki Discrete Element Model, HiDEM). We demonstrate feasibility reproducing observed retreat at front Kronebreen, tidewater...
Subglacial discharge plumes increase submarine melting of marine-terminating glaciers significantly; however, in-situ data on their properties and behaviour are limited. We present oceanographic collected by ringed seals (Pusa hispida) instrumented with GPS-equipped conductivity-temperature-depth satellite relay loggers (GPS-CTD-SRDLs) in Kongsfjorden, Svalbard, during 2012. The foraged just outside the hydrographic from within plumes' upwelling cores as they returned to surface. encountered...
Abstract We present a fully-automated workflow to map sea ice types from Sentinel-1 data and transfer the results in near real-time research vessel Kronprins Haakon (KPH) order support tactical navigation decision-making during cruise conducted towards Belgica Bank April May 2022. used overlapping SAR optical imagery train pixel-wise classifier for required season region, implemented processing chain with Norwegian Ice Service at MET Norway that automatically classifies all images covering...
Abstract Almost half of the Greenland ice sheet's mass loss occurs through iceberg calving at marine terminating glaciers. The presence buoyant subglacial discharge plumes these termini are thought to increase both submarine melting and by undercutting that consequently increases rates. Plume models used predict undercutting. However, there few observations allow relationships be tested. Here, we use airborne lidar from terminus Helheim Glacier, SE measure bulge induced surface upwelling...
Abstract. In this paper, we study the effects of basal friction, sub-aqueous undercutting and glacier geometry on calving process with six different models: a continuum-mechanical ice flow model (Elmer/Ice), climatic mass balance model, simple subglacial hydrology plume an undercut discrete particle to investigate fracture dynamics (Helsinki Discrete Element Model, HiDEM). We also demonstrate feasibility reproducing observed retreat at front Kronebreen, tidewater in Svalbard, during melt...
Many researchers have analysed the effect of wind on fjord dynamics by using two-dimensional numerical models. This paper investigates and tidal forcing effects strong stratification circulation application three-dimensional model TELEMAC-3D. The capability to reproduce physical processes has been investigated applying it Sermilik Fjord, Greenland. study shows that major changes in are induced. Any speed an instant impact water surface velocities. Also, diffusively driven produced horizontal...
<p>The Ice Watch program coordinates routine visual observations of sea-ice including icebergs and meteorological parameters. The development use the Arctic Shipborne Sea Standardization Tool (ASSIST) software has enabled to collect over 6 800 records from numerous ship voyages it is complementary Antarctic Sea-ice Processes Climate (ASPeCt) in Antarctic. These will enhance validation calibration data Copernicus Sentinel satellites other Earth Observation missions where lack...