A5020891947- Cryospheric studies and observations
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Winter Sports Injuries and Performance
- Methane Hydrates and Related Phenomena
- Landslides and related hazards
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Marine and environmental studies
- Polar Research and Ecology
- Climate Change and Environmental Impact
- Scientific Research and Discoveries
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Climate variability and models
- Seismology and Earthquake Studies
- Dental Radiography and Imaging
- Geological Modeling and Analysis
- Environmental Policies and Emissions
- Indigenous Studies and Ecology
- Antenna Design and Analysis
- Spine and Intervertebral Disc Pathology
- Cell Image Analysis Techniques
- earthquake and tectonic studies
Geological Survey of Denmark and Greenland
2019-2025
Hospital South West Jutland
2013-2023
University of Copenhagen
2011-2017
Natural History Museum Aarhus
2011-2017
University of Iceland
2016-2017
Natural History Museum of Denmark
2011
The Programme for Monitoring of the Greenland Ice Sheet (PROMICE) has been measuring climate and ice sheet properties since 2007. Currently, PROMICE automatic weather station network includes 25 instrumented sites in Greenland. Accurate measurements surface near-surface atmospheric conditions a changing are important reliable present future assessment changes Sheet. Here, we vision, methodology, each link production chain obtaining sharing quality-checked data. In this paper, mainly focus on...
We present a sea-ice record from northern Greenland covering the past 10,000 years. Multiyear sea ice reached minimum between ~8500 and 6000 years ago, when limit of year-round at coast was located ~1000 kilometers to north its position. The subsequent increase in multiyear culminated during 2500 is linked an export western Arctic higher variability ice-drift routes. When Greenland, it greatly increased Ellesmere Island west. lack uniformity changes, which probably related large-scale...
Abstract The Greenland ice sheet has been one of the largest sources sea-level rise since early 2000s. However, basal melt not included explicitly in assessments ice-sheet mass loss so far. Here, we present first estimate total and regional produced by recent change through time. We find that sheet’s production is 21.4 +4.4/−4.0 Gt per year, generated friction responsible for about half this volume. melting increased 2.9 ± 5.2 during decade As Arctic warms, anticipate will continue to...
Abstract. We present the Programme for Monitoring of Greenland Ice Sheet (PROMICE) Velocity product (https://doi.org/10.22008/promice/data/sentinel1icevelocity/greenlandicesheet, Solgaard and Kusk, 2021), which is a time series ice velocity mosaics spanning September 2016 through to present. The based on Sentinel-1 synthetic aperture radar data has 500 m grid spacing. A new mosaic available every 12 d spans two consecutive cycles (24 d). made within ∼ 10 last acquisition includes all...
Abstract. Marine-terminating outlet glacier terminus traces, mapped from satellite and aerial imagery, have been used extensively in understanding how glaciers adjust to climate change variability over a range of timescales. Numerous studies digitized termini manually, but this process is labor intensive, no consistent approach exists. A lack coordination leads duplication efforts, particularly for Greenland, which major scientific research focus. At the same time, machine learning...
Climate change is increasingly predisposing polar regions to large landslides. Tsunamigenic landslides have occurred recently in Greenland ( Kalaallit Nunaat ), but none been reported from the eastern fjords. In September 2023, we detected start of a 9-day-long, global 10.88-millihertz (92-second) monochromatic very-long-period (VLP) seismic signal, originating East Greenland. this study, demonstrate how event started with glacial thinning–induced rock-ice avalanche 25 × 10 6 cubic meters...
Global warming is predicted to have a profound impact on the Greenland Ice Sheet and its contribution global sea-level rise. Recent mass loss in northwest of has been substantial. Using aerial photographs, we produced digital elevation models extended time record recent observed marginal dynamic thinning back mid-1980s. We reveal two independent ice events northwestern margin: from 1985 1993 2005 2010, which were separated by limited changes. Our results suggest that changes this sector...
Abstract The Greenland Ice Sheet is the largest land ice contributor to sea level rise. This will continue in future but at an uncertain rate and observational estimates are limited last few decades. Understanding long-term glacier response external forcing key improving projections. Here we use historical photographs calculate loss from 1880–2012 for Jakobshavn, Helheim, Kangerlussuaq glacier. We estimate corresponding a rise of 8.1 ± 1.1 millimetres these three glaciers. Projections mass...
On December 15th 1952, at approximately 14:00 local time a mass of 5.9 × 106 m3 permafrozen talus deposits failed in landslide close to the Niiortuut mountain on south coast Nuussuaq peninsula, central West Greenland. Between 1.8 and 4.5 material entered sea generated tsunami that propagated through Vaigat strait (Sullorsuaq). Here we describe this catastrophic event for first by analysis historical supplemented recent fieldwork discuss implications state contemporary slopes. The killed...
Abstract. Observations over the past decade show significant ice loss associated with speed-up of glaciers in southeast Greenland from 2003, followed by a deceleration 2006. These short-term, episodic, dynamic perturbations have major impact on mass balance decadal scale. To improve projection future sea level rise, long-term data record that reveals beyond such episodic events is required. Here, we extend observational marginal thinning Helheim and Kangerdlugssuaq 10 to more than 80 years....
ABSTRACT We assess ice loss and velocity changes between 1985 2014 of three tidewater five-land terminating glaciers in Godthåbsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 ± 0.2 km 3 loss, equivalent to 0.10 mm eustatic sea-level rise. An additional 3.5 0.3 was lost the calving retreats Kangiata Nunaata Sermia (KNS) Narsap (NS), two that exhibited asynchronous behavior over study period. KNS has retreated 22 from its Little Ice Age (LIA) maximum (1761 AD), which...
Abstract. The Vaigat strait (Sullorsuaq) in West Greenland is well known for its susceptibility to landslides and historical landslide-generated tsunamis. Recent mapping of the seabed has revealed several prehistoric giga-scale (volumes 109 m3) tsunamigenic landslides. However, timing these tsunamis largely unconstrained, but they are assumed have occurred after last deglaciation. Here, we report on lake sediment core records from four coastal lakes located between 19 91 m above sea level...
ABSTRACT The Arctic is warming faster than the global average, making it critical to understand how this affects ecological structure and function in streams, which are key ecosystems. Microbial biofilms crucial for primary production decomposition streams support higher trophic levels. However, comprehensive studies across regions, particular within Greenland, scarce. This study analysed total biomass, autotrophic biomass (chlorophyll a ), general of major groups stream epilithic...
Abstract Please click here to download the map associated with this article. Simultaneously geological field investigations at surge-type glacier Brúarjökull in August 2003, aerial photographs covering central part of including Kringilsárrani area were recorded purpose mapping glacial landforms. A geomorphological has been completed a scale 1:16,000 more than 20,000 landforms from an c. 8 km2. Manual classification was carried out directly stereoscopic view using digital photogrammetric...
The transition from the last ice age to present-day interglacial was interrupted by Younger Dryas (YD) cold period. While many studies exist on this climate event, only few include high-resolution marine records that span YD. In order better understand interactions between ocean, atmosphere and sheet stability during YD, more proxy Arctic, located proximal outlet glaciers, are required. Here we present first diatom-based quantitative reconstruction of sea surface conditions central-eastern...
Abstract Many glaciers along the southeast and northwest coasts of Greenland have accelerated, increasing ice sheet's contribution to global sea‐level rise. In this article, we map elevation changes on Upernavik Isstrøm (UI), West Greenland, during 2003to 2009 using high‐resolution ice, cloud land satellite laser altimeter data supplemented with surveys from NASA's Airborne Topographic Mapper 2002 2010. To assess thinning prior 2002, analyze aerial photographs 1985. We document at least two...