Using Rapid Scan or Super Rapid Scan Visible Imagery, Part I

  The GOES include operational capabilities to optionally perform 2 modes of special, rapid-interval imaging.   During Rapid Scan Operations (RSO) and Super Rapid Scan Operations (SRSO), imagery is collected over increasingly reduced-area sectors at 7.5-minute intervals (RSO) and at either 1-minute or at 30-second intervals (SRSO).   The 1- minute SRSO offers 22 images an hour, with 2 segments of 1-minute interval images, allowing for regularly scheduled 15-minute interval operational scans.

  This SRSO Visible loop shows GOES-9 imagery of Huricane Luis on 6 September 1995, when the storm was near peak intensity.   SRSO imagery allows one to make detailed analyses of cloud top features and their continuity may be more easily monitored.   The rapid interval offers a uniquely detailed look at the structure of many different weather systems, in this case a hurricane.   One can measure the cyclonic outflow in the upper-level clouds outside the eyewall, as well as be able to see clear evidence of the convergence of cloud-top air flowing inward at the top edge of the eyewall.

  Compare this with a coincident GOES infrared (IR) imagery loop (channel 4, 10.7 µm).   [Click on the hypertext, "visible imagery", within the IR loop display page to return to this page.]