NeQuick topside formulation over Nicosia

Using topside electron density measurements recorded by different techniques over Nicosia, Cyprus (geographical coordinates: 35.14°N, 33.2°E) we investigate the behaviour of a topside electron density formulation of the NeQuick model with an extension recently proposed, called NeQuick -corr. The selected topside electron density dataset employed in this study is primarily based on Radio Occultation (RO) topside electron density profiles on board low Earth orbit (LEO) satellites from the COSMIC/FORMOSAT-3 mission. The results are also examined based on in-situ Langmuir probe data on board European Space Agency (ESA) Swarm satellites, in the vicinity Nicosia. Our investigation demonstrates that a measurable NeQuick topside representation improvement can be achieved in the topside F region near the peak, if a key parameter (g), that regulates the altitudinal scale height variation, is adjusted to a value of 0.15 (compared to a currently adopted value of 0.125).