A measurement of the N2 number density and the N2 vibrational rotational temperature in the lower thermosphere - Instrumentation and preliminary results

T. Kawashima, Oyama Koichiro, K. Suzuki, N. Iwagami, S. Teii

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4 Citations (Scopus)

Abstract

The vibrational temperature (Tv) and the rotational temperature (TR) of atmospheric molecular nitrogen were measured in situ by a sounding rocket S-310-24 in the lower thermosphere, 100-160 km above Uchinoura, Kagoshima, Japan (31.1°N, 131.3°E), at 20:00 JST on February 11, 1996. Molecular nitrogen was first ionized using an electron gun (1 keV, 2 mA) and the emission of the 1st Negative Band (1NG) of the ionized N2 was measured by a sensitive spectrometer. Preliminary analysis shows that the rotational temperature nearly follows the MSIS86 atmospheric model, but shows a peak at a height of 120 km that is 100 K hotter than MSIS86.

Original languageEnglish
Pages (from-to)663-666
Number of pages4
JournalAdvances in Space Research
Volume19
Issue number4
DOIs
Publication statusPublished - 1997 Jan 1

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

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