Articles | Volume 32, issue 7
Ann. Geophys., 32, 773–791, 2014

Special issue: C/NOFS results and equatorial ionospheric dynamics

Ann. Geophys., 32, 773–791, 2014

Regular paper 14 Jul 2014

Regular paper | 14 Jul 2014

Statistical analysis of C/NOFS planar Langmuir probe data

E. Costa1, P. A. Roddy2, and J. O. Ballenthin2 E. Costa et al.
  • 1Centro de Estudos em Telecomunicações (CETUC) Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rua Marquês de São Vicente 225 Gávea, 22451-900 Rio de Janeiro, RJ, Brasil
  • 2Space Vehicles Directorate, Air Force Research Laboratory Kirtland Air Force Base, NM, USA

Abstract. The planar Langmuir probe (PLP) onboard the Communication/Navigation Outage Forecasting System (C/NOFS) satellite has been monitoring ionospheric plasma densities and their irregularities with high resolution almost seamlessly since May 2008. Considering the recent changes in status of the C/NOFS mission, it may be interesting to summarize some statistical results from these measurements. PLP data from 2 different years (1 October 2008–30 September 2009 and 1 January 2012–31 December 2012) were selected for analysis. The first data set corresponds to solar minimum conditions and the second one is as close to solar maximum conditions of solar cycle 24 as possible at the time of the analysis. The results from the analysis show how the values of the standard deviation of the ion density which are greater than specified thresholds are statistically distributed as functions of several combinations of the following geophysical parameters: (i) solar activity, (ii) altitude range, (iii) longitude sector, (iv) local time interval, (v) geomagnetic latitude interval, and (vi) season.