Figure 5. Airborne ash detected outside Iceland within 40°–70°N and 40°W–30°E.

The map is constructed by dividing SEVIRI retrievals into three separate time intervals: 14–17 April, 18 April–4 May and 5–18 May.Daily ash mass loadings that exceed 0.2 g m⁻² within each 0.25°×0.25° grid cell are summed up. No attempt is made to indicate the amount of ash retrieved or the concentration, rather the plot shows the spatial distribution of the ash over the domain considered.