ARKTALAS Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. Waves generated by winds over the ocean propagate into areas covered by sea ice where they can be strongly attenuated and can contribute to break-up of the sea ice and thus pushing the ice more easily around. This paper provides a review of the capabilities of using various types of satellite remote sensing data to assess the wind-wave attenuation under the sea ice is presented.

ARKTALAS Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. The Beaufort Gyre in the Arctic Ocean has spun up over the last couple of decades. In this study a high-resolution eddy resolving model has been used to study accumulations of fresh water in the gyre and its role in the ocean circulation in the Arctic Ocean.

Arktalas Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. Related to the Arctic Amplification topic, the study “Impact of sea ice friction on ocean tides in the Arctic Ocean, modelling insights at various time and space scales”, to be submitted to Ocean Science, investigated the linkages between sea ice change and ocean tides in the Arctic Ocean, thanks to hydrodynamic simulations, CryoSat-2 satellite altimetry observations and in situ tide gauge measurements. 

ARKTALAS Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. The rapid changes in the Arctic environment and climate, manifested through the Arctic Amplifications have been addressed in a synthesis study exploring the capabilities of satellite observations integrated in reanalysis modelling. 

Arktalas Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. The study Observational evidences of eddy-sea ice interactions in the pack-ice and in the marginal ice zone published in Geophysical Research Letter, addresses the challenges related to characterize the impact of more persistent and larger area of open water on sea ice dynamics, by combined use of high resolution field and satellite sea ice observations. The method capitalizes on early visual observations of ice eddies in airborne Synthetic Aperture Radar (SAR) from the 1980ties and demonstrated the detailed processing required for automatic eddy detections algorithm in ice covered waters.

Arktalas Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. In the study Modelling the Arctic wave-affected marginal ice zone, comparison with ICESat-2 observations accepted the journal Philosophical Transactions A, the challenges related to characterize the impact of more persistent and larger area of open water on sea ice dynamics in the Arctic Ocean are addressed. The radar altimeter on board the ICESat-2 satellite have been instrumental to quantify the impact on the sea ice of waves propagating into the marginal ice zone.

Arktalas Hoavva, funded by the European Space Agency, addresses four major scientific challenges for the Arctic. In the study Driving mechanisms of an extreme winter sea-ice breakup event in the Beaufort Seapublished in Geophysical Research Letter, the challenges related to understand, characterize and predict the impact of extreme event storms in sea-ice formation, by combined use of satellite sea ice observations and numerical sea ice modelling.

The main goal of the final scientific workshop of the ARKTALAS Hoavva project was to assess the state of the art in use satellite measurements in synergy with in-situ data and modelling tools to characterize and quantify the processes driving changes in the Artic sea ice and Arctic Ocean.