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Global Morphology of Night-time NmF2 Enhancements : Volume 20, Issue 11 (30/11/-0001)

By Farelo, A. F.

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Book Id: WPLBN0004001006
Format Type: PDF Article :
File Size: Pages 12
Reproduction Date: 2015

Title: Global Morphology of Night-time NmF2 Enhancements : Volume 20, Issue 11 (30/11/-0001)  
Author: Farelo, A. F.
Volume: Vol. 20, Issue 11
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Mikhailov, A. V., Herraiz, M., & Farelo, A. F. (-0001). Global Morphology of Night-time NmF2 Enhancements : Volume 20, Issue 11 (30/11/-0001). Retrieved from

Description: Department of Geophysics and Meteorology, Faculty of Physics, Complutense University, E-28040 Madrid, Spain. An overall statistical study of night-time enhancements of NmF2 has been carried out. All available foF2 observations since 1955 at 53 ionosonde stations distributed worldwide in the latitude range fgeom = 15° - 60° were used in the analysis. More than 200 000 station-nights of data were analysed. This large data base allowed us to study seasonal, solar cycle and spatial variations of the NmF2 nighttime enhancements. Both pre-midnight and post-midnight NmF2 peaks demonstrate distinct variations with geophysical conditions, indicating different physical mechanisms responsible for their formation.

Key words. Ionosphere (mid-latitude ionosphere, ionosphere-magnetosphere interactions) Radio science (ionospheric physics)

Global morphology of night-time NmF2 enhancements


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