High latitudes include active desert regions with at least 5 % production of the total atmospheric dust. High Latitude Dust (HLD) sources, evidenced to produce dust storms, cover > 1,600,000 km2 and are located in both the Northern (Iceland, Alaska, Canada, Greenland, Svalbard, North Eurasia, and Scandinavia) and Southern (Antarctica, Patagonia, New Zealand) Hemispheres. HLD travels several thousands of km inside the Arctic and towards Europe. In Polar Regions, HLD was recognized as an important climate driver in the IPCC SROCC Report in 2019. In situ and remote sensing HLD measurements are sparse, but there is an increasing number of research groups investigating HLD and its impacts on climate in terms of effects on cryosphere, cloud properties and marine environment, engaged in the IceDust Association. This talk will show the results of HLD measurements in Iceland, Svalbard and Antarctica, and impacts of HLD on climate.
Date and time: Sept 23, 2025 at 4PM GMT