TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 65 (No. 11), pp. 1295-1308, 2013

Rapid modelling of the large-scale magnetospheric field from Swarm satellite data

Brian Hamilton

British Geological Survey (NERC), West Mains Road, Edinburgh, EH9 3LA, UK

(Received December 30, 2012; Revised August 13, 2013; Accepted September 5, 2013; Online published November 22, 2013)

Abstract: As part of the European Space Agency (ESA) Swarm mission, ESA has commissioned an independent scientific consortium known as the Swarm satellite Constellation Application and Research Facility (SCARF) to develop and operate the Level 2 Processor (L2PS). Its purpose is to derive high quality scientific products from the mission's data. One such product is the Fast-Track Magnetospheric Model (FTMM), which is a model of the large scale vector magnetospheric field and its induced counterpart. This model is generated once per satellite orbit, in near real-time by a robust, autonomous algorithm. Its intended use is similar to that of the Disturbance storm time Index (Dst): characterising the rapidly varying magnetospheric field, as an input to other global field models, and for the space weather community. In this paper we describe in detail the FTMM algorithm and assess its ability to recover the magnetospheric component from the consortium's test satellite data set as well as real data from the CHAMP satellite.
Key words: Swarm, magnetosphere, magnetic modelling.

Corresponding author E-mail: bham@bgs.ac.uk

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