Figure 1. (Click on figure to enlarge.)
Example of analysis procedure for GEOPROF-2B radar reflectivity granule (#01132, July 15, 2006, 01:52:00Z to 03:31:00Z). Panel A shows raw reflectivity from CloudSat for the entire granule, which consists of around 37,000 profiles with a vertical resolution of 240 m. Panel B zooms in on convective clouds observed in W Pacific (5N-5S, ~165W) near 02:40Z. The section bounded by the dashed lines contains 100 profiles. Panel C shows the level-to-level correlation matrix calculated for this section. We retain 75 levels of radar reflectivity, from near mean sea-level to around 18,000 m altitude, for the calculation. The resulting matrix is 75x75 and symmetric, with values along the diagonal of exactly 1.00.
In panels D and E we illustrate the two-sided Gaussian fit that is performed to estimate an upward and downward correlation scale from each vertical level. The dashed vertical lines in (D) are placed at 3300 m an d14100 m. The corresponding correlation profiles are shown by the solid lines in (E). The dashed lines in (E) show best-fit one parameter Gaussians at these levels.
