I study climate in ice cores from Greenland and Antarctica. I am Sweden's representative in all the major international deep drilling projects in Greenland, such as NorthGRIP, NEEM, and EastGRIP, as well as EPICA and Beyond EPICA in Antarctica.

The projects involve drilling several kilometers down through the ice sheet, reaching back hundreds of thousands of years in time, to gather information about past climates and environments with the aim of understanding how our complex climate system works.