Solar-terrestrial conditions during Sundial-86 and empirical modelling of the global-scale ionospheric response

Details Solar-terrestrial conditions during Sundial-86 and empirical modelling of the global-scale ionospheric response Solar-terrestrial conditions during Sundial-86 and empirical modelling of the global-scale ionospheric response

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..387s&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 8, June 1990, p. 387-398.

Mathematics

Logic

10

Auroral Zones, Ionospheric Disturbances, Solar Terrestrial Interactions, Solar Wind, Atmospheric Models, Earth Ionosphere, Equatorial Regions, Polar Caps

Scientific paper

Covering the period from September 22 through October 4, 1986, the Sundial-86 Solar-Minimum Equinoctial Campaign studied the behavior of the global-scale ionosphere. The period covered the most quiet (Q1) and second most disturbed (D2) days of the entire month of September, with the disturbed conditions triggered by a high-speed solar wind stream. Ionospheric responses were monitored by the Sundial network of nearly 70 stations distributed approximately in three longitudinal domains; and global maps of f0F2 results were compared with the 'predictions' of the International Reference Ionosphere modified to include an empirical specification of auroral oval boundaries and associated high-latitude morphological domains. Comparisons that included regions in the polar cap, diffuse auroral oval, mid-latitude trough, equatorial anomaly, and the sunrise/sunset terminator showed good agreement between the hourly 8-day-averaged ionospheric observations and the model.

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