Morphology of the D- and E-regions at high latitudes in the northern hemisphere during the DYANA campaign in 1990

Details Morphology of the D- and E-regions at high latitudes in the northern hemisphere during the DYANA campaign in 1990 Morphology of the D- and E-regions at high latitudes in the northern hemisphere during the DYANA campaign in 1990

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56.1933r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 13-14, p. 1,933-1,945

Computer Science

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3

D Region, E Region, Electromagnetic Absorption, Electron Density Profiles, Middle Atmosphere, Morphology, Northern Hemisphere, Polar Regions, Stratospheric Warming, Sunspots, Anomalies, Autumn, Eiscat Radar System (Europe), Riometers, Solar Cycles, Sounding Rockets, Winter

Scientific paper

The morphology of the D- and E-regions in the northern hemisphere at latitudes above 60 deg N during the DYnamics Adapted Network for the Atmosphere (DYANA) campaign from 11 January to 16 March 1990 is described on the basis of riometer, rocket and EISCAT measurements. The campaign was carried out during the sunspot maximum year of solar cycle 22 and was aimed at studies of the middle atmosphere. During the winter anomaly days of the campaign period an increased ionospheric absorption measured by a riometer was seen on only one winter anomaly day, and only at the southernmost station of the riometer network at latitude 63 deg N. The ionospheric absorption did not increase during a stratospheric warming in early February. Both winter and autumn anomalies in the ionospheric absorption occured during 1990. The substorm events observed during the campaign period are discussed and electron density profiles in the D- and E-regions are presented for different substorm phases.

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