Intercomparison of preliminary MFR, SBUV, TOMS, and TOVS total ozone data
A comparative study of total ozone data derived from various satellite instruments is being conducted. The instruments included in the study are the DMSP Multichannel Filter Radiometer (MFR), the NASA Solar Backscatter Ultraviolet Ozone Experiment (SBUV), the NASA Total Ozone Mapping Spectrometer (TOMS), and the NOAA Tiros Operational Vertical Sounder (TOVS). The two periods chosen for data intercomparison are January 1 to February 15, 1979 and June 1 to 30, 1979. These two data periods cover summer and winter regimes in both hemispheres. The January 1 to February 15, 1979 period includes a significant stratospheric warming event that began about January 15. Preliminary data from each of the instruments were processed for the first data period. The total ozone data have been made available for analysis with the understanding that they may be changed at a later date. The data do not represent the final data products, but they are useful for determining the characteristics of the data retrieval schemes, and early intercomparison of the data may lead to improvements in the ozone retrieval methodology. Results indicate that each of the satellite instruments has its own strengths and weaknesses. No instrument is universally better than or worse than any other in terms of accuracy, although they appear to have definite biases in certain geographical areas. The differences between the satellite systems is greatest at high latitudes where cloudiness and ozone variabilities are greatest. The Dobson data show a bias and differing degrees of ozone variability between nearby Dobson stations, which indicates there may be problems with using the Dobson data as a standard for comparison.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore National Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5267713
- Report Number(s):
- UCID-18739
- Country of Publication:
- United States
- Language:
- English
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