Lack of in-situ measurements of ice temperature (boreholes) limit our capabilities to understand ice sheet dynamics. Researchers combined L-band (1.4 GHz) passive microwave observations from SMOS over Antarctica with glaciological and emission models to infer information on glaciological properties of the ice sheet at various depths, including temperature. Comparison with existing models showed that differences …
7 years of CryoSat-2, jointly with other satellite altimetry data allowed scientists from DTU Space to develop an altimetric gravity model and exploit it to derive the first ever Arctic bathymetry map predicted from marine gravity. This has been combined with the existing IBCAO bathymetry map (derived from sparse ship soundings) to create a new …
The A+5 study belongs to the STSE ARCTIC+ cluster of projects and specifically contributes to the Year of Polar Prediction (YoPP). A+5 is constructing a flexible system for Arctic Mission Benefit Analysis (ArcMBA) that evaluates in a mathematically rigorous fashion the observational constraints imposed by individual and groups of EO (and in situ) data products …
Ice sheet dynamics is strongly related to basal melting and geothermal heat flow, which in turn is influenced by crustal thickness variations. On the other hand, the lithosphere of the Antarctic continent is still poorly known. Different datasets (airborne gravity and magnetic measurements, seismological campaigns) exist but mostly suffer from limited spatial coverage over large …
Sea Surface Salinity (SSS) is a key indicator of the freshwater fluxes and an important variable to understand the changes the Arctic is facing. However, salinity in-situ measurements are very sparse in the Arctic region. For this reason, remote sensing salinity measurements (currently provided by L-band radiometry satellites, SMOS and SMAP) are of special relevance …
The loss of ice from Antarctica is one of the principal causes of contemporary sea level rise. Tracking the changes that are currently occurring across this remote and inaccessible continent requires systematic satellite monitoring programmes. From these unique observational platforms, robust long-term climate records can be developed, which help scientists to understand and to predict …
The project will investigate Northern Hemisphere methane (CH4) sources and their connection to the soil freezing and thawing at high latitudes. We will innovatively combine methods for monitoring of CH4 (methane) emissions in the Northern Hemisphere by applying both data from Earth Observing (EO) satellites and global atmospheric methane inversion model estimates. The EO data …
Land ice mass loss is the largest source of global sea level rise. Since 1992, two thirds of sea level contribution from land ice comes from the Arctic. Roughly half of Greenland ice sheet mass loss is from increased surface melting. The fraction from surface melting is even higher for smaller Arctic ice masses. The …
Living Planet Fellowship research project carried out by Jack Landy. Arctic-SummIT will deliver, for the first time, a sea ice thickness product during summer months from the ESA Cryosat-2 satellite. As the extent of Arctic sea ice has declined at unprecedented speed over the past few decades, we have been able to view only limited …
