Global observations of e region plasma density morphology and variability

摘要: [1] The global morphology and variability of the ionospheric E region plasma density are estimated from satellite-based radio occultation total electron content (ROTEC) measurements. Vertical profiles using inversion technique recently proposed by Nicolls et al. (2009). In this technique, F-region contribution to each ROTEC measurement is removed an assimilative model ionosphere in order mitigate effects gradients estimation profiles. The applied observations made GPS receivers onboard COSMIC satellites aided specification provided Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm. Global estimates hmE, NmE, (TEC) presented for two different months: April 2007 January 2008. Results our analysis show that measurements such as those constellation can produce reasonable valuable parameters on a scale when properly treated effect gradients. agreement between α-Chapman theory ionization recombination demonstrated. Reasonable also be specified dependence latitude quantified presented.