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  • 1
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    Temperature retrievals from satellite radiance measurements - An empirical method (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: This paper presents a method for using satellite measurements to interpolate vertical temperature soundings between radiosonde stations. The calculations presented show that especially in the 1000-800 mb layer, where linear methods of temperature retrieval usually contain large errors, the proposed method reduces the errors substantially. The method finds a set of coefficients, which when multiplied by corresponding measured radiance quantities, yield zero temperature error at a radiosonde station. This derived set of coefficients is then applied to satellite radiance measurements at places between the radiosonde stations. The computations show, for example, that the average absolute error in the layer 1000-800 mb is only 0.3 K when the corresponding 'minimum-information' method error was 2.9 K. The method may be most applicable to measurements from geostationary satellites, but should also be applicable to measurements from polar orbiting satellites under certain conditions.
    Keywords: GEOPHYSICS
    Type: Journal of Applied Meteorology; 16; Feb. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Temperature distribution from radiosonde and satellite measurements (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Since air temperatures derived from satellite radiance measurements often contain large errors, a method is suggested for combining radiosonde and satellite measurements to achieve better accuracy. In particular, when geostationary satellite radiances become available, it would be possible to use the satellite measurements to interpolate geographically between the radiosonde stations, and also to extrapolate in time from one radiosonde launch time until the next launch time. Simulated radiance data were used to test this method in a region of possible severe local storm development, and the accuracy obtained by using real scanning microwave spectrometer data was determined.
    Keywords: GEOPHYSICS
    Type: Plenary Meeting; Jun 07, 1977 - Jun 18, 1977; Tel Aviv; Israel
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Investigations with satellite data temperature retrievals (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A method is presented for using satellite measurements to interpolate vertical temperature soundings between radiosonde stations. The method finds a set of coefficients, which when multiplied by corresponding measured radiance quantities, yield zero temperature error at a radiosonde station. This derived set of coefficients is then applied to satellite radiance measurements at places between radiosonde stations. The computations show, for example, that the average absolute error in the layer 1000-800 mbs is only 0.3K when the corresponding 'minimum-information' method error was 2.9K. The method may be most applicable to measurements from geostationary satellites, but should also be applicable to measurements from polar orbiting satellites under certain conditions.
    Keywords: GEOPHYSICS
    Type: NASA-CR-148811 , PUBL-76-158
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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