21/30403764 DC

This standard 21/30403764 DC BS ISO 16457. Space environment (natural and artificial). The Earth's ionosphere model. International reference ionosphere (IRI) model and extensions to the plasmasphere is classified in these ICS categories:

• 17.060 Measurement of volume, mass, density, viscosity
• 49.140 Space systems and operations
• 07.060 Geology. Meteorology. Hydrology

This document provides guidance to potential users for the specification of the global distribution of ionosphere densities and temperatures, as well as the total content of electrons in the height interval from 50 km to 1500 km. It includes and explains several options for a plasmaspheric extension of the model, embracing the geographical area between latitudes of 80°S and 80°N and longitudes of 0°E to 360°E, for any time of day, any day of year, and various solar and magnetic activity conditions.