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Spatial variability in the ionosphere measured with GNSS networks
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
2013 (English)In: Radio Science, Vol. 48, p. 646–652-Article in journal (Refereed)
Abstract [en]

Travelling Ionospheric Disturbances (TIDs) appear as Medium-Scale TIDs at mid-latitudes and as polar cap patches at high latitudes. Both can have a negative impact on GNSS measurements although the amplitude is of tenths of a TECU. Due to their spatial extension they affect GNSS measurements using receivers separated with distances up to ~1000 km. We present statistical measures of the ionospheric spatial variability as functions of time in solar cycle, annual season, and time of day for different geographical locations in Europe. In order to perform this spatial characterization of the ionosphere, we have used archived GPS data from a thirteen year period, 1999-2011, covering a complete solar cycle. We find that the ionospheric spatial variability is larger for the northern areas than for the southern areas. This is especially pronounced at solar maximum. For the more northern areas, the ionospheric variability is greater during night time than during day time, while for central Europe the variability is larger during day time. At solar maximum, the variability is larger during the months October and November and smaller in June and July.

Place, publisher, year, edition, pages
2013. Vol. 48, p. 646–652-
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6490Local ID: 15779OAI: oai:DiVA.org:ri-6490DiVA, id: diva2:964328
Note
Travelling Ionospheric Disturbances (TIDs) appear as Medium-Scale TIDs at mid-latitudes and as polar cap patches at high latitudes. Both can have a negative impact on GNSS measurements although the amplitude is of tenths of a TECU. Due to their spatial exAvailable from: 2016-09-08 Created: 2016-09-08Bibliographically approved

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