NEDM

The NEDM2020 (Neustrelitz Electron Density Model) is an empirical ionosphere model that provides 3D electron density distributions for ionosphere and plasmasphere. It combines separate F and E-layer electron density models, providing insights into the spatial and temporal variations of key ionospheric parameters. This model captures fluctuations based on local time, geographic or geomagnetic location, solar irradiation, and solar activity, offering a detailed understanding of ionospheric dynamics.The ionosphere is the ionized part of the Earth's atmosphere, ranging from about 60 km up to several Earth radii, whereas the upper part above about 1000 km height up to the Plasmapause is usually called the plasmasphere. The Neustrelitz Electron Density Model NEDM2020 can provide electron concentration at any given location and time in the ionosphere for trans-ionospheric applications (altitude range 80 – 20,000 km). It is the superposition of the Neustrelitz Plasmasphere Model (NPSM) and ionosphere models composed of separate F and E-layer distributions. As such, the three-dimensional model covers the whole ionosphere to support space weather services and mitigate propagation errors for trans-ionospheric signals up to GNSS orbit height.

To describe the spatial and temporal variability of the key parameters as a function of local time, geographic/geomagnetic location, solar irradiation, and activity, the Neustrelitz TEC model (NTCM), Neustrelitz Peak Density Model (NPDM), and the Neustrelitz Peak Height Model (NPHM) are utilised for deriving Chapman layer parameters such as the total electron content (TEC), peak ionization, and peak height information. It is used as a background model for IMPC services in data assimilation (electron density Ne, TEC).

The driving parameter is F10.7, and user can input latitude, longitude, height, day of year, and universal time. There is no interpolation and hence no limit to spatial or temporal resolution. The obtained distributions are continuous and smooth. Users can operate the model interactively for Ne computation along any receiver-satellite link.

Read more:

https://doi.org/10.1051/swsc/2021044

https://esc.pithia.eu/data-collections/DataCollection_NEDM2020/api/