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  • SPACE SCIENCES  (7)
  • SPACECRAFT INSTRUMENTATION  (3)
  • 1
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    Standard values for the solar constant and its spectral components (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Solar constant and spectral energy distribution standard values by high altitude aircraft, balloon and spacecraft measurements
    Keywords: SPACE SCIENCES
    Type: ; VUE SCIENTIFIQUE ET
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Proposed standard values of the solar constant and the solar spectrum (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Solar constant and zero air mass spectrum, discussing new standard values
    Keywords: SPACE SCIENCES
    Type: ; UGREVUE(
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Rocket calibration of the Nimbus 6 solar constant measurements (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A sounding rocket experiment was performed in June 1976, in which the solar constant was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers (the Primary Absolute Cavity Radiometer and two Active Cavity Radiometers, Type IV) and duplicates of Nimbus 6 ERB/ESP (Earth Radiation Budget/Eclectic Satellite Pyrheliometer) solar channels. The preliminary average solar constant result from the cavity radiometers is 1367 W/sq m with an uncertainty of less than plus or minus 0.5% in SI units. The duplicate ERB channel 3 on the rocket gave a value of 1389 W/sq m, which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Applied Optics; 16; Oct. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Extraterrestrial solar spectrum, 3000-6100 A at 1-A intervals (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Standard values of the solar constant and extraterrestrial solar spectrum are reviewed. In the visible and near UV, this listing of average irradiance over 100-A bandwidths at 50-A intervals was found to be inadequate for many applications. A more detailed spectrum obtained from solar scans with a Perkin-Elmer, Model 112 monochromator was found to give sufficient detail. A normalization program was developed to make the Perkin-Elmer curve agree with the standard curve. Values of extraterrestrial solar spectral irradiance at 1-A intervals in the range 3000-6100 A have been derived. The results are presented in tabular form and as spectral charts.
    Keywords: SPACE SCIENCES
    Type: Applied Optics; 13; Mar. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Solar irradiance measurements from a research aircraft. (1969)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Solar constant and spectral irradiance curve for zero air mass obtained from aircraft measurements
    Keywords: SPACE SCIENCES
    Type: ; DIOTEKHNIKA (
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Solar energy outside the earth's atmosphere. (1973)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Spectral irradiance measurements at high altitude were made using a variety of monochromators and filter radiometers. The results of all recent high-altitude measurements have been critically examined by an ad hoc committee on 'Solar Electromagnetic Radiation.' The committee has proposed standard values for engineering use for the solar constant and the solar spectrum. These values are presented and also the reasons for recommending their acceptance. Detailed comparisons are made between the revised spectral irradiance values and those which had been widely accepted in earlier years. New values are computed for frequently cited astrophysical quantities which are derived from the solar constant and the solar spectrum. The spectrum is extended to 10 A in the X-ray range and to 10 m in the microwave range. The revised value of the solar constant is 1.94 cal per sq cm per min. The proposed standard solar spectrum shows significant differences from other curves throughout the spectral range.
    Keywords: SPACE SCIENCES
    Type: Solar Energy; 14; Jan. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Revised standards for the solar constant and the solar spectrum (1972)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The values of the solar constant and solar spectrum are presented which are proposed as revised standards for science and technology. A solar constant value of 1.94 cal/sq cm min or 135.3 mW/sq cm was proposed. A detailed spectral irradiance table is given for the range of 0.12 to 1000 microns.
    Keywords: SPACE SCIENCES
    Type: Significant Accomplishments in Technol., GSFC, 1970; p 133-137
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    The solar constant and the solar spectrum measured from a research aircraft (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Solar constant and solar spectrum measured from research aircraft
    Keywords: SPACE SCIENCES
    Type: NASA-TR-R-351 , G-991
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Rocket calibration of the Nimbus 6 solar constant measurements (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Total solar irradiance was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers and duplicates of four of the Nimbus 6 Earth Radiation Budget (ERB) solar channels in a June 1976 sounding rocket experiment. The preliminary average solar constant result from the cavity radiometers is 1367 Wm (-2) with an uncertainty of less than + or - 0.5% in S.I. units. The duplicate ERB channel 3 on the rocket gave a value of 1389 Wm (-2) which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: NASA-TM-X-71305 , X-942-77-66
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Solar Energy Monitor In Space (SEMIS) (1974)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Measurements made at high altitudes from aircraft have resulted in the establishment of standard values of the solar constant and extraterrestrial solar spectral irradiance. These standard values and other solar spectral curves are described. The problem of possible variations of the solar constant and solar spectrum and their influence on the earth-atmosphere system and weather related phenomena is examined. It is shown that the solar energy input parameters should be determined with considerably greater accuracy and precision than has been possible. An instrument package designed as a compact, low weight solar energy monitor in space (SEMIS) is described.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: NASA-TM-X-70623 , X-912-74-78 , Symp. on Solar Radiation Meas. and Instrumentation; Nov 13, 1973 - Nov 15, 1973; Rockville, MD; United States
    Format: application/pdf
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