Comparative testing of four ionospheric models driven with GPS measurements
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hdl:2117/13481
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Data publicació2011-07-28
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Abstract
In the context of the European Space Agency/European Space Operations Centre
funded Study “GNSS Contribution to Next Generation Global Ionospheric Monitoring,”
four ionospheric models based on GNSS data (the Electron Density Assimilative
Model, EDAM; the Ionosphere Monitoring Facility, IONMON v2; the Tomographic
Ionosphere model, TOMION; and the Neustrelitz TEC Models, NTCM) have been run
using a controlled set of input data. Each model output has been tested against differential
slant TEC (dSTEC) truth data for high (May 2002) and low (December 2006) sunspot
periods. Three of the models (EDAM, TOMION, and NTCM) produce dSTEC standard
deviation results that are broadly consistent with each other and with standard deviation
spreads of ∼1 TECu for December 2006 and ∼1.5 TECu for May 2002. The lowest
reported standard deviation across all models and all stations was 0.99 TECu (EDAM,
TLSE station for December 2006 night). However, the model with the best overall dSTEC
performance was TOMION which has the lowest standard deviation in 28 out of 52 test
cases (13 stations, two test periods, day and night). This is probably related to the
interpolation techniques used in TOMION exploiting the spatial stationarity of vertical
TEC error decorrelation.
CitacióFeltens, J. [et al.]. Comparative testing of four ionospheric models driven with GPS measurements. "Radio science", 28 Juliol 2011, vol. 46, núm. RS0D12, p. 1-11.
ISSN0048-6604
Versió de l'editorhttp://www.agu.org/pubs/crossref/2011/2010RS004584.shtml
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