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We have determined the ice mass evolution of the Antarctic and Greenland ice sheets (AIS and GIS) and Gulf of Alaska (GOA) glaciers from a new GRACE global solution of equal-area surface massâ€¦ (More)

- Nils Olsen, Hermann LÃ¼hr, +4 authors Sungchan Choi
- 2006

S U M M A R Y We have derived a model of the near-Earth magnetic field (up to spherical harmonic degree n = 50 for the static field, and up to n = 18 for the first time derivative) using more thanâ€¦ (More)

- Nils Olsen, Hermann LÃ¼hr, +4 authors Lars TÃ¸ffner-Clausen
- 2014

Nils Olsen,1,âˆ— Hermann LÃ¼hr,2 Christopher C. Finlay,1 Terence J. Sabaka,3 Ingo Michaelis,2 Jan Rauberg2 and Lars TÃ¸ffner-Clausen1 1DTU Space, National Space Institute, Technical University ofâ€¦ (More)

- Nils Olsen, Roger Haagmans, +6 authors Mioara Mandea
- 2006

1Danish National Space Center, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark 2Directorate of Earth Observation Programmes, ESTEC/ESA, Postbus 299, NL-2200 AG Noordwijk ZH, The Netherlandsâ€¦ (More)

- V. Voorhies, Terence J. Sabaka, Michael Purucker

When astrophysicists measure light from a distant star, they can break up the starlight into its component colors, creating a spectrum from long wavelength red to short wavelength blue, by beamingâ€¦ (More)

- Frank G. R. Lemoine, Sander J. Goossens, +8 authors Maria T. Zuber
- Geophysical research letters
- 2014

We have derived a gravity field solution in spherical harmonics to degree and order 900, GRGM900C, from the tracking data of the Gravity Recovery and Interior Laboratory (GRAIL) Primary (1 March toâ€¦ (More)

The highly magnetic (field magnitudes of 50 nT at 18 km altitude) Reiner Gamma albedo feature on the near side of the moon has been explained in terms of differential space weathering of an oldâ€¦ (More)

We have derived a model of the near-Earthâ€™s magnetic field using more than 10 years of highprecision geomagnetic measurements from the three satellites Ã˜rsted, CHAMP and SAC-C. This model is anâ€¦ (More)

- Gregory A. Neumann, Maria T. Zuber, +19 authors Walter S. Kiefer
- Science Advances
- 2015

Observations from the Gravity Recovery and Interior Laboratory (GRAIL) mission indicate a marked change in the gravitational signature of lunar impact structures at the morphological transition, withâ€¦ (More)

When deriving spherical harmonic models of the Earthâ€™s magnetic field, low-degree external field contributions are traditionally considered by assuming that their expansion coefficient q0 1 variesâ€¦ (More)