The Mesospheric Sodium Layer as a Remotely, Optically Pumped Magnetometer for Investigation of Birkeland Currents

Magnar Gullikstad Johnsen1, Juergen Matzka2, Ulf-Peter Hoppe1 and Alessandra Serrano1, (1)The Arctic University of Norway, Tromsø, Norway, (2)GFZ German Research Centre for Geosciences, Potsdam, Germany