Molecular Radiation of the Upper Atmosphere in the 3–8-μ Spectral Region

M. N. Markov

doi:10.1364/AO.8.000887

Applied Optics
Vol. 8,
Issue 5,
pp. 887-891
(1969)
•https://doi.org/10.1364/AO.8.000887

Molecular Radiation of the Upper Atmosphere in the 3–8-μ Spectral Region

M. N. Markov

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M. N. Markov, "Molecular Radiation of the Upper Atmosphere in the 3–8-μ Spectral Region," Appl. Opt. 8, 887-891 (1969)

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Abstract

The upper atmosphere ir radiation has been investigated by rockets and satellites. The upper atmosphere radiation has a layer structure, its maximum intensity being observed at altitudes of 150 km, 280 km, 430 km, and 500 km. The radiation energy density in the layers reaches 10⁻⁴ erg/cm³ sec, increasing to 10⁻³ erg/cm³ sec during a magnetic storm. The character of spectral distribution (with maximum in the region of 4.5–8.5 μ) corresponds to radiation of the rotation-vibration bands of diatomic molecules, apparently NO, OH, and CO.

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Experiment	Time of experiment (Moscow time)	Layer height (km)	Radiation flux (W/m²)	Instrument spectral region (μ)	K_p
RJZ–I geophysical probe of the U.S.S.R. Academy of Sciences	27 August 1958	290	690	0.8–40	5.0
RJZ–I geophysical probe of the U.S.S.R. Academy of Sciences	27 August 1958	425	650
RJZ–5 geophysical probe of the U.S.S.R. Academy of Sciences	18 October 1962	240	150	0.8–40	4.0
	11^b30^m	430	180
		495	160
	6 June 1963	320	<20	2.5–40	0
	4^h36^m	400	—
		—	—
	18 June 1963	280	250	2.5–40	4
	4^h20^m	420	220
		505	220
MR–I geophysical probe of the U.S.S.R. Academy of Sciences	18 October 1962	—		4.5–8.5	4.0
	11^b30^m	400	150
	6 June 1963	320	<20	4.5–8.5	0
	4^h36^m	—	—
MS–2 satellite Cosmos–45	13 September 1964	280	100	4.5–8.5	1–2
MS–2 satellite Cosmos–45	17^h–l9^h		25	0.8–4.5
MS–2 satellite Cosmos–65	17 April 1965	150	30	4.5–8.5	0
	13^h–18^h	320	<10	4.5–8.5
	18^h–22^h	250	<10	4.5–8.5	4.0
		320	20
RJZ–10 geophysical probe of the U.S.S.R. Academy of Sciences	1 October 1965	250–300	<10	0.8–40	0
	6^h57^m	400	<10
		500	<10

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Applied Optics