Earth Planets Space, Vol. 65 (No. 11), pp. 1189-1200, 2013
Nils Olsen1, Eigil Friis-Christensen1, Rune Floberghagen2, Patrick Alken3,4, Ciaran D. Beggan5, Arnaud Chulliat3, Eelco Doornbos6, João Teixeira da Encarnação6, Brian Hamilton5, Gauthier Hulot3, Jose van den IJssel6, Alexey Kuvshinov7, Vincent Lesur8, Hermann Lühr8, Susan Macmillan5, Stefan Maus4, Max Noja8, Poul Erik H. Olsen1, Jaeheung Park8, Gernot Plank9, Christoph Püthe7, Jan Rauberg8, Patricia Ritter8, Martin Rother8, Terence J. Sabaka10, Reyko Schachtschneider8, Olivier Sirol3, Claudia Stolle1,8, Erwan Thébault3, Alan W. P. Thomson5, Lars Tøffner-Clausen1, Jakub Velímský11, Pierre Vigneron3, and Pieter N. Visser6
1DTU Space, Technical University of Denmark, Elektrovej, DK-2800 Kgs. Lyngby, Denmark
2Directorate of Earth Observation Programmes, ESRIN, via Galileo Galilei, 2, 00044 Frascati, Italy
3Institut de Physique du Globe de Paris, France
4National Geophysical Data Center, NOAA, USA
5British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, Scotland
6Delft University of Technology, The Netherlands
7ETH Zurich, Switzerland
8Helmholtz-Zentrum Potsdam, Deutsches Geo-Forschungs-Zentrum, 14473 Potsdam, Germany
9ESTEC, The Netherlands
10Planetary Geodynamics Laboratory, GSFC/NASA, Greenbelt, MD 20771, USA
11Department of Geophysics, Faculty of Mathematics and Physics, Charles University in Prague, Czech Republic
(Received March 30, 2013; Revised June 30, 2013; Accepted July 1, 2013; Online published November 22, 2013)
Swarm, a three-satellite constellation to study the dynamics of the
Earth's magnetic field and its interactions with the Earth system,
is expected to be launched in late
2013. The objective of the Swarm mission is to provide the best ever
survey of the geomagnetic field and its temporal evolution, in order
to gain new insights into the Earth system by improving our
understanding of the Earth's interior and environment.
In order to derive advanced models of the geomagnetic field (and other higher-level data products)
it is necessary to take explicit advantage of the constellation aspect of Swarm. The
Swarm SCARF (Satellite Constellation Application and
Research Facility) has been established with the goal of deriving Level-2 products by combination of data from the three satellites, and of the various instruments.
The present paper describes the Swarm input data products (Level-1b and auxiliary data)
used by SCARF, the various processing chains of SCARF, and the Level-2 output
data products determined by SCARF.
Key words: Earth's magnetic field, core field, lithosphere, ionosphere, magnetosphere, electromagnetic induction, comprehensive inversion, Swarm satellites.