A fundamental aspect of DEEP PURPLE is the large fieldwork component of the project, combining field observations and experiments with real time measurements and collection of samples for laboratory analyses. Four seasons of fieldwork in Greenland are planned, over the course of which we will spend time at several field sites. This will help us understand if the combination of physical, geochemical and biological processes previously found to cause surface darkening at Site S6, east of Kangerlussuaq, occur over other parts of the ice sheet.

Following successful pilot fieldwork in 2019, in 2020 we spent time at a site in the south of the ice sheet, near Narsarsuaq, where it is warmer and there is a longer melt season. In 2021 we are returning to the same site for a longer field campaign with a larger research team.