Abstract
Radiometric measurement of the brightness temperature of the mean solar disk has been made in the wavelength range from 238 μ to 312 μ (42.1 cm-1 to 32.1 cm-1), using a Michelson interferometer of resolution 0.25 cm-1, carried on the NASA research aircraft at altitude 12.6 km. A mean temperature 4370 ± 260 K is obtained. The result is compared with other measurements of the solar minimum temperature and with the prediction of the BCA Model.
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The National Center for Atmospheric Research is sponsored by the National Science Foundation.
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Eddy, J.A., Léna, P.J. & MacQueen, R.M. Far infrared measurement of the solar minimum temperature. Sol Phys 10, 330–341 (1969). https://doi.org/10.1007/BF00145521
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DOI: https://doi.org/10.1007/BF00145521