NDLI: A topside equatorial ionospheric density and composition climatology during and after extreme solar minimum

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A topside equatorial ionospheric density and composition climatology during and after extreme solar minimum

Content Provider	NASA Technical Reports Server (NTRS)
Author	Pfaff, R. F. Simoes, F. Bilitza, D. Ivanov, S. Heelis, R. A. Rowland, D. E. Klenzing, J. H.
Copyright Year	2011
Description	During the recent solar minimum, solar activity reached the lowest levels observed during the space age. This extremely low solar activity has accompanied a number of unexpected observations in the Earth's ionosphere and thermosphere when compared to previous solar minima. Among these are the fact that the ionosphere is significantly contracted beyond expectations based on empirical models. Climatological altitude profiles of ion density and composition measurements near the magnetic dip equator are constructed from the C/NOFS satellite to characterize the shape of the top side ionosphere during the recent solar minimum and into the new solar cycle. The variation of the profiles with respect to local time, season, and solar activity are compared to the IRI-2007 model. Building on initial results reported by Heelis et al. [2009], here we describe the extent of the contracted ionosphere, which is found to persist throughout 2009. The shape of the ionosphere during 2010 is found to be consistent with observations from previous solar minima.
File Size	1202683
Page Count	34
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20120002636
Archival Resource Key	ark:/13960/t43r5vf0g
Language	English
Publisher Date	2011-09-06
Access Restriction	Open
Subject Keyword	Solar Physics Ion Density Concentration Solar Activity Climatology Density Measurement Vertical Distribution Solar Activity Effects Ionospheric Composition Earth Ionosphere Minima Solar Cycles Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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