Earth Planets Space, Vol. 65 (No. 11), pp. 1345-1353, 2013
Ciarán D. Beggan, Susan Macmillan, Brian Hamilton, and Alan W. P. Thomson
British Geological Survey, Murchison House, Edinburgh, EH9 3LA U.K.
(Received December 19, 2012; Revised August 14, 2013; Accepted August 21, 2013; Online published November 22, 2013)
Magnetic field models are produced on behalf of the
European Space Agency (ESA) by an independent scientific consortium
known as the Swarm Satellite Constellation Application and Research
Facility (SCARF), through the Level 2 Processor (L2PS). The
consortium primarily produces magnetic field models for the core,
lithosphere, ionosphere and magnetosphere. Typically, for each
magnetic product, two magnetic field models are produced in
separate chains using complementary data selection and processing
techniques. Hence, the magnetic field models from the complementary
processing chains will be similar but not identical. The final step
in the overall L2PS therefore involves inspection and validation of
the magnetic field models against each other and against data from
(semi-) independent sources (e.g. ground observatories). We
describe the validation steps for each magnetic field product and
the comparison against independent datasets, and we show examples
of the output of the validation. In addition, the L2PS also
produces a daily set of `Quick Look' output graphics and statistics
to monitor the overall quality of Level 1b data issued by ESA. We
describe the outputs of the `Quick Look' chain.
Key words: Swarm, validation, quick look, magnetic modelling.