Earth system mass transport mission (e.motion): A concept for future Earth gravity field measurements from space

Panet, I.; Flury, J.; Biancale, R.; Gruber, T.; Johannessen, J.; van den Broeke, M.; van Dam, T.; Gegout, P.; Hughes, C.; Ramillien, G.; Sasgen, I.; Seoane, L.; Thomas, M. 2013 Earth system mass transport mission (e.motion): A concept for future Earth gravity field measurements from space. Surveys in Geophysics, 34 (2). 141-163. https://doi.org/10.1007/s10712-012-9209-8