Open AccessLong-term variations in the neutral gas composition of the thermosphere over Norilsk (2003–2013)
Author(s) -
Г. П. Кушнаренко,
Г. П. Кушнаренко,
Ольга Яковлева,
Olga Yakovleva,
Г. М. Кузнецова,
Г. М. Кузнецова
Publication year - 2017
Publication title -
solar-terrestrial physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.11
H-Index - 2
ISSN - 2500-0535
DOI - 10.12737/24278
Subject(s) - thermosphere , earth's magnetic field , quiet , atmospheric sciences , environmental science , ionosphere , term (time) , geology , physics , geophysics , magnetic field , astronomy , quantum mechanics
Seasonal variations in relative values of the main gas components of the thermosphere [O]/[N2] and [O2]/[O] were obtained at the station Norilsk during the period 2003–2013. Estimates were made using a technique we devel-oped and data from the Norilsk digisonde (69° N, 88° E) for heights below the ionospheric F1-layer peak height under quiet and disturbed geomagnetic conditions in different seasons. We established that the [O2]/[O] ratio under quiet and disturbed geomagnetic conditions in all seasons by the end of 2013 decreased from 10 to 20 % relative to the values of 2003. The [O]/[N2] ratio for the same conditions increased to 17 %.