Vol. 16, issue 01, article # 13
pdf Taran V. I., Grigorenko E. I. Investigation of hydrogen ion behavior by the incoherent scattering (IS) method. Comparison of Kharkov IS radar results with Arecibo and Millstone Hill radar observations, Atmosphere Explorer space data, and FLIP model calculations . // Atmospheric and oceanic optics. 2003. V. 16. No. 01. P. 64-71.Copy the reference to clipboard
Abstract:
Kharkov, Arecibo, and Millstone Hill radar measurements of the H+ ion concentration in the ionosphere (up to the altitudes of 1000-1300 km) are compared for winter and summer conditions, as well as for minimum and maximum solar activity. The altitude and diurnal H+ ion variations in the ionosphere over the Eastern and Western Hemispheres are shown to be principally similar. A considerable longitudinal effect is found in the relative H+ ion concentration for the midlatitude Kharkov and Millstone Hill radars. The effect is explained by different L parameters and magnetic flux tube volumes caused by non-coincidence of the Earth's geographic and geomagnetic poles. The Kharkov radar data are also compared with the Atmosphere Explorer (AE) satellite data and FLIP model calculations for the midlatitude region, day and night local conditions, and minimum solar activity. The comparison demonstrates a similar character of the altitude distribution of H+ ions and conditions of ionosphere-plasmasphere interaction. At the same time, the Kharkov radar data exceed the AE findings and model calculations. This discrepancy is explained by different heliogeophysical conditions.