Computer Science
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ge%26ae..48..220d&link_type=abstract
Geomagnetism and Aeronomy, Volume 48, Issue 2, pp.220-231
Computer Science
4
4.20.Ji
Scientific paper
A series of important aspects of the time and spatial variations in the critical frequency ratio fo(night)/ fo(day) considered by one of the authors [Danilov, 2007, 2008] is specified. The list of the Eastern-Hemisphere stations, for which an analysis of the above indicated ratio was performed, is completed. The available stations of the Western Hemisphere are considered. It is shown that the character of the variations in the fo(night)/ fo(day) ratio is independent of limitations imposed on the Ap index of magnetic activity for the analyzed days. The consideration of the long-term variations in geomagnetic activity using the annual mean value of the Ap index does not influence the principal conclusions of the study, although in some cases changes statistical characteristics of the obtained behavior of the fo(night)/ fo(day) ratio after 1980. A comparison of the results, based on the interpretation of the trends of the fo(night)/ fo(day) value with the changes in the stratosphere-ionosphere coupling from the 1980s to the 1990s obtained by the authors earlier, confirms the assumption that there occurs a systematic change in the zonal wind in the upper atmosphere.
Danilov Aleksei Dmitrievich
Vanina-Dart L. B.
No associations
LandOfFree
Spatial and time variations in the foF2 (night)/ foF2 (day) ratio: Specification of some effects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spatial and time variations in the foF2 (night)/ foF2 (day) ratio: Specification of some effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial and time variations in the foF2 (night)/ foF2 (day) ratio: Specification of some effects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1341702