CCMC Metadata Registry (CMR)

Go to:

• About
• View Metadata
• Login

NEDM2020 (1)

Neustrelitz Electron Density Model

Model Description

The Neustrelitz Electron Density Model (NEDM2020) is a three-dimensional electron density model developed at German Aerospace Center (DLR) for supporting space weather services and mitigation of propagation errors for trans-ionospheric signals. The 3D electron density distribution is modelled by combining a Chapman layer representing the ionospheric F-layer, an E-layer model and a plasmasphere model. The topside ionosphere and plasmasphere is modelled by superposing the Neustrelitz Plasmasphere Model (NPSM) to the F-layer and E-layer models. The combined model describes the ionosphere and plasmasphere up to GNSS orbit height of about 20,000 km. Knowing the F10.7 in advance NEDM2020 can predict the electron concentration at any given location and time in the ionosphere for trans-ionospheric applications. Use of a limited number of model coefficients (< 100) and no interpolation for model parameters makes NEDM2020 a fast running model and suitable for operational purpose.

Model Figure(s) :

Model Inputs Description

lat_deg: geographic latitude in degrees between -90 to 90
lon_deg: geographic longitude in degrees between -180 to 180
altm: altitudes of the profile in meters
epoch: date and time
F10p7: solar radio flux in SFU with range between 67 to 250 SFU

Model Outputs Description

NetCDF file containing electron density profiles [el/m**3] or total electron content [TECU]

Model Caveats

Change Log

AS of August 11, 2025, NEDM2020 is available to the community through the CCMC instant-Run (IR) service and Runs-On-Request (ROR) Service

Model Acknowledgement/Publication Policy (if any)

Model Domains:

Space Weather Impacts:

Phenomena :

Simulation Type(s):

Temporal Dependence Possible? (whether the code results depend on physical time?)

Model is available at?

Source code of the model is publicly available?

CCMC Model Status (e.g. onboarding, use in production, retired, only hosting output, only source is available):

Code Language:

Regions (this is automatically mapped based on model domain):

Contacts :

Acknowledgement/Institution :

Relevant Links :

Publications :

Model Access Information :

Linked to Other Spase Resource(s) (example: another SimulationModel) :

Curator: Chiu Wiegand | NASA Official: Dr. Masha Kuznetsova | Privacy and Security Notices | Accessibility | CCMC Data Collection Consent Agreement