
	NOAA Aeronomy Laboratory and Environmental Technology Laboratory

Analysis of Event #1

23:00, 30 July - 04:00, 31 July

Event Description

The S-band profiler observations for this event are shown in the three different modes:

The SPOL reflectivity observations near the profiler site are shown in this QuickTime animation. The animation contains both PPI and RHI scans.

SPOL observations near the profiler

Calibration of the S-Band Profiler Using SPOL

The SPOL reflectivity directly over the profiler site is shown in the following three figures. The top panel shows the S-band reflectivity at the original 60 meter vertical resolution. The middle panel shows the S-band reflectivity reduced to the SPOL resolution of 775 meters. While the SPOL make instantaneous observations over the profiler site, the three figures show the SPOL observations with 1, 5, and 12 minute durations to aid in the visual comparisons between the profiler and the scanning radar.

SPOL reflectivity over profiler - 1 min

SPOL reflectivity over the profiler - 5 min

SPOL reflectivity over the profiler - 12 min

Time series of SPOL reflectivity over the profiler along with the the S-band profiler reflectivity are show for each 1 km interval in this QuickTime animation:

Time Series of SPOL and S-band profiler reflectivity

The scatter plot of individual SPOL reflectivity observations and the closest in time and altitude S-band profiler reflectivity observation is shown below. The S-band profiler reflectivity was adjusted so yield the shown mean bias. Thus, the S-band profiler was calibrated to the SPOL reflectivity.
Scatter plot of SPOL and S-band reflectivity

Scatter plot of SPOL and S-band reflectivity

Observations of the Out Flow Boundary

The following QuickTime animation shows the SPOL reflectivity during the low elevation scans.

SPOL reflectivity during low elevation scans

At the beginning of the event, there is an out flow boundary that propagates away from a convective cell and passes over the profiler site neat 00:30 UTC. The SPOL reflectivity scan is shown below:
SPOL reflectivity at 00:28:28

The wind speed, temperature and humidity observed at the Profiler site is shown below:
wind, temp, and humdity at Profiler site

ASCII Data Files

ASCII data files for this event will be placed here when the quality control process is complete.