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  • 1
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    Identification of new solar OH lines in the 10-12 micron region (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: High-resolution (0.02/cm) infrared solar spectra obtained with a balloon-borne interferometer reveal new solar absorption features, which appear as regularly spaced quartets, in the 825-960/cm region. The lines are interpreted as high N-double-prime (25-33) pure rotation lines of solar OH. An effective amount of approximately 8 x 10 to the 15th molecules/sq cm of OH is estimated from the spectra.
    Keywords: SOLAR PHYSICS
    Type: Astrophysical Journal; vol. 248
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    New atlas of IR solar spectra (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Over 4500 absorption lines have been marked on the spectra and the corresponding line positions tabulated. The associated absorbing telluric or solar species for more than 90% of these lines have been identified and only a fraction of the unidentified lines have peak absorptions greater than a few percent. The high resolution and the low Sun spectra greatly enhance the sensitivity limits for identification of trace constituents.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-163499
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Analysis of solar spectra in the middle ultraviolet and visible for atmospheric trace constituents measurements (1980)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Individual spectral line parameters including line positions, strengths, and intensities were generated for the sq Alpha Sigma - sq Chi Pi (0,0) band of OH, applicable to atmospheric and high temperatures. Energy levels and transition frequencies are calculated by numerically diagonalizing the Hamiltonian. Line strengths are calculated using the dipole matrix and eigenvectors derived from energy matrix diagonalization. The line strengths are compared to those calculated from previously published algebraic line strength formulas. Tables of line parameters are presented for 240 K and 4600 K.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-163150
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Solar extinction radiometry (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Work on the spectral line parameters of hydroxyl radical band was completed. The UV-visible data obtained during 1977 balloon flights were used for zone quantification. The region between from 3100 A to 3500 A appears to be the best region to use for determining ozone columns with the three wavelength method. Ozone volume mixing ratios determined for the 1977 data were compared with standard middle latitude ozone profiles. Numerous high and low Sun scans were obtained during ascent and from float altitude (1981 balloon flight) at 0.003 A resolution in the 3068 A to 3089 A region. The spectra are being studied for OH identification and quantification.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-164290
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Theoretical simulation of solar spectra in the middle ultraviolet and visible for atmospheric trace constituent measurements (1979)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The data compiled during the study allowed a detailed examination of the attenuation of the solar radiance by the combined effect of the atmospheric trace gases and the SAGE filters. The case of the 0.44 microns channel is presented. The amounts of NO2, NO2, O3 and the airmass were chosen to closely simulate a low sun spectral scan from a 9 February 1977 balloon flight. The solar radiance outside the earth's atmosphere was determined from the AFGL Sacramento Peak Observatory spectral data tape degraded to 2.0A resolution and normalized to Thekaekara's absolute intensities. The spectral absorption coefficients used for NO2 and O3 were tabulated previously.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-158584
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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