CALCULATION OF UPDATED COEFFICIENTS FOR ATMOSPHERIC TEMPERATURE RETRIEVAL

In older to calculate updated coefficients for atmospheric temperature retrieval from satellite sounding data and radiosonde data, it is necessary to form statistical samples of real radiance and radiosonde data match-ups. A procedure is presented here for the data matchups. And a method of eigenvectors of statistical covariance matrices is used to produce updated coefficients for atmospheric temperature retrieval. The updated coefficients produced are tested using radiance observations from NOAA-7 satellite. Comparisons of these real-time retrieved data with radiosonde data show that the atmospheric temperature profiles retrieved have an accu-racy of RMS 2－3 degrees (oC). In addition, the error sources are also discussed.