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| Titel |
Simultaneous global radio observations of the ionosphere for assessment of forces from below and above |
| VerfasserIn |
Bodo W. Reinisch, Ivan Galkin |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250049950
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| Zusammenfassung |
| To accurately assess the global impact on the ionosphere of forces from below and above the
ionosphere requires simultaneous measurements around the globe. The network of Digisonde
ionospheric sounders operating at 80+ locations in the world represents a Global Ionospheric
Radio Observatory (GIRO) with simultaneous measurements every 15 minutes or at some
stations 7.5 minutes. Today GIRO provides public access to 30+ million records of
ionospheric measurements collected at 64 locations, of which 42 provide real-time feeds,
publishing their measurement data within several minutes from their completion.
GIRO databases holding ionogram and Doppler skymap records of HF ionospheric
soundings have registered connections from 123 organizations in 33 countries. Easy
access to the global state of the ionospheric plasma distribution given in accurate and
fine detail by the ionosonde measurements has inspired a number of studies of the
ionospheric response to space weather events [Zong et al., 2009; Paznukhov et al.,
2009]
GIRO is comprised of three components: (1) the network of Digisonde stations providing
online and offline data recorded at the same time [Reinisch et al. ; (2) two master GIRO
databases, the Digital Ionogram Data Base (DIDBase) and the DriftBase for skymap/drift
measurements; and (3) associated software capable of automatic and interactive data analysis
and the derivation of higher order data products for end user applications. [Galkin et al.,
2008; Khmyrov et al., 2008]. The greatest operational impact of GIRO has come through the
single-point availability of the global network’s real-time and retrospective data to
both scientists and computer algorithms, free from handling tapes, cartridges, CDs,
etc.
Availability of GIRO data with minimal latency allows for the assimilation of the
ionogram-derived data in real-time models such as the real-time extension planned for the
International Reference Ionosphere (IRI), and the GAIM model.
Galkin, I. A. et al. (2008), The ARTIST 5, in Radio Sounding and Plasma Physics, AIP
Conf. Proc. 974, 150-159.
Khmyrov, G. M. et al. (2008), Exploring digisonde ionogram data with SAO-X and
DIDBase, in Radio Sounding and Plasma Physics, AIP Conf. Proc. 974, 175-185.
Paznukhov, V. V. et al. (2009), Experimental evidence for the role of the neutral wind in
the development of ionospheric storms in midlatitudes, J. Geophys. Res., 114, A12319,
doi:10.1029/2009JA014479.
Reinisch, B. W. et al. (2009), The New Digisonde for Research and Monitoring
Applications, Radio Sci.,44:p RS0A24, doi:10.1029/2008RS004115.
Zong, Q.-G. et al. (2009) Dayside ionospheric response to the intense interplanetary
shocks/solar wind discontinuities: Observations from the digisonde global ionospheric
radio observatory, J. Geophys. Res., 115, A06304, doi:10.1029/2009JA014796. |
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