A High Latitude Model for the E Layer Dominated Ionosphere

Under certain conditions, the ionization of E layer can dominate over that F2 layer. This phenomenon is called dominated ionosphere (ELDI) and occurs mainly in auroral regions. In present work, we model variation ELDI for Northern Southern Hemispheres. Our proposed Neustrelitz Event Model (NEEM) an empirical, climatological describes characteristics by means four submodels selected observables, considering dependencies on appropriate drivers. The observables include occurrence probability events typical parameters are important to describe propagation medium High Frequency (HF) radio waves. drivers geomagnetic latitude, local time, day year, solar activity convection electric field. During our investigation, found clear trends depending drivers, which be well represented parametric functions. this regard, submodel NEEM-N characterizes peak electron density NmE layer, while NEEM-H NEEM-W corresponding height hmE vertical width wvE profile, respectively. Furthermore, NEEM-P specifies %ELDI. dataset underlying studies contains more than two million profiles covering a period almost 13 years. These were derived from ionospheric GPS occultation observations board six COSMIC/FORMOSAT-3 satellites (Constellation Observing System Meteorology, Ionosphere Climate/Formosa Satellite Mission 3). We divided into modeling determining coefficients test subsequent validation. normalized root mean square deviation (NRMS) between original predicted yields similar values across both datasets hemispheres. For NEEM-N, obtain NRMS varying 36.1% 47.1% NEEM-H, 6.1% 6.3%. case NEEM-W, varies 38.5% 41.1%, it 56.5% 60.3% NEEM-P. summary, NEEM utilizes primary relationships with geophysical wind useful describing occurrences associated changes properties. manner, paves way future prediction its technical applications, especially fields telecommunications navigation.