GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations

Details GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ap%26ss.tmp...13k&link_type=abstract

Astrophysics and Space Science, Online First

Astronomy and Astrophysics

Astrophysics

Gps, Ionospheric Total Electron Contents, Geomagnetic Storm, Iri Model

Scientific paper

The paper is based on the ionospheric variations in terms of vertical total electron content (VTEC) for the low solar activity period from May 2007 to April 2009 based on the analysis of dual frequency signals from the Global Positioning System (GPS) satellites recorded at ground stations Varanasi (Geographic latitude 25°16' N, Longitude 82°59' E), situated near the equatorial ionization anomaly crest and other two International GNSS Service (IGS) stations Hyderabad (Geographic latitude 17°20' N, longitude 78°30' E) and Bangalore (Geographic latitude 12°58' N, longitude 77°33' E) in India. We describe the diurnal and seasonal variations of total electron content (TEC), and the effects of a space weather related event i.e. a geomagnetic storm on TEC. The mean diurnal variation during different seasons is brought out. It is found that TEC at all the three stations is maximum during equinoctial months (March, April, September and October), and minimum during the winter months (November, December, January and February), while obtaining intermediate values during summer months (May, June, July and August). TEC shows a semi-annual variation. TEC variation during geomagnetic quiet as well as disturbed days of each month and hence for each season from May 2007 to April 2008 at Varanasi is examined and is found to be more during disturbed period compared to that in the quiet period. Monthly, seasonal and annual variability of GPS-TEC has been compared with those derived from International Reference Ionosphere (IRI)-2007 with three different options of topside electron density, NeQuick, IRI01-corr and IRI 2001. A good agreement is found between the GPS-TEC and IRI model TEC at all the three stations.

Affiliated with

Also associated with

No associations

Rating

GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GPS-TEC variations during low solar activity period (2007-2009) at Indian low latitude stations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-750446