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  • 1
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    Effect of partially-clouded scenes on the determination of ozone (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Differences in wavelength pair ozone values determined from Backscattered Ultraviolet (BUV) instrument measurements are directly correlated with scene reflectivity which, in turn, is a function of scene cloudiness. At low solar zenith angles (overhead sun), maximum discrepancies between pair values of 2 to 3 percent. These discrepancies are believed to be due to algorithmic behavior and imply a mean error in the final derived ozone of approximately 5 percent for cases of 50 percent reflectivity. Results using a new algorithm show a significant decrease in pair discrepancy and, therefore, in the error of the final derived ozone.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Ozone in the Troposphere and Stratosphere, Part 2; p 919-922
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Profile shape dependence in backscattered ultraviolet satellite retrievals of total ozone (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Total ozone operational algorithms use climatological mean ozone profiles. When the actual ozone profiles have significantly different shapes versus the climatology and the solar zenith angles are large, retrieved total ozone will have an error. Recalibrated SBUV profiles are used to estimate this error. Preliminary results suggest that, on the average, the change and variation in significant profiles shapes can to a large degree be estimated by the SBUV derived profiles. Preliminary results suggest the average error in the report algorithm ozone trend (trend in reported ozone) from profile shape is relatively small during the north hemisphere winter (less than 2 percent) for solar zenith angles less than 82 degrees (for 60 degrees North Latitude).
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Ozone in the Troposphere and Stratosphere, Part 2; p 907-910
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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