A Comprehensive Model of Earth's Magnetic Field Determined from 4 Years of Swarm Satellite Observations

The European Space Agency's three-satellite constellation Swarm, launched in November 2013, has provided unprecedented monitoring of Earth's magnetic field via a unique set of gradiometric and multi-satellite measurements from low Earth orbit. In order to exploit these measurements, an adv...

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Vydané v:Earth, planets, and space Ročník 70; číslo 1; s. 1 - 26
Hlavní autori: Sabaka, Terence J., Toeffner-Clausen, Lars, Olsen, Nils, Finlay, Christopher C.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Goddard Space Flight Center Springer 10.08.2018
Springer Berlin Heidelberg
Springer Nature B.V
SpringerOpen
Predmet:
1. Geomagnetism
Algorithms
Diurnal variations
Earth
Earth and Environmental Science
Earth orbits
Earth Sciences
Field modeling
Geology
Geomagnetic fields
Geomagnetism
Geophysics
Geophysics/Geodesy
Low earth orbits
Magnetic fields
Magnetic measurement
Magnetic properties
Magnetospheres
Observations
Observatories
Orbits (Astrophysics)
Satellite observation
Satellites
Satellites (Spacecraft)
Space missions
Surveys
Swarm satellites
Tides
Field Modeling
Swarm Satellites
satellites
Geomagnetism
Field modeling
Tides
Swarm satellites
ISSN:1343-8832, 1880-5981, 1880-5981
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Popis
Shrnutí:The European Space Agency's three-satellite constellation Swarm, launched in November 2013, has provided unprecedented monitoring of Earth's magnetic field via a unique set of gradiometric and multi-satellite measurements from low Earth orbit. In order to exploit these measurements, an advanced "Comprehensive Inversion" (CI) algorithm has been developed to optimally separate the various major magnetic field sources in the near-Earth regime. The CI algorithm is used to determine Swarm Level-2 (L2) magnetic field data products that include the core, lithospheric, ionospheric, magnetospheric, and associated induced sources. In addition, it has become apparent that the CI is capable of extracting the magnetic signal associated with the oceanic principal lunar semi-diurnal tidal constituent M(sub 2) to such an extent that it has been added to the L2 data product line. This paper presents the parent model of the Swarm L2 CI products derived with measurements from the first four years of the Swarm mission and from ground observatories, denoted as "CIY4", including the new product describing the magnetic signal of the M(sub 2) oceanic tide.
Bibliografia:GSFC
ISSN: 1343-8832
Report Number: GSFC-E-DAA-TN60433
E-ISSN: 1880-5981
GSFC-E-DAA-TN60433
Goddard Space Flight Center
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1343-8832
1880-5981
1880-5981
DOI:10.1186/s40623-018-0896-3