nopeda Posted September 4, 2012 Share Posted September 4, 2012 There's a pretty good number of little blue dots that always seem to be in the base reflectivity image just south of Atlanta, and then a few individuals scattered out in various places. Can someone tell me what they are? They seem to be there all the time. Link to comment Share on other sites More sharing options...
LithiaWx Posted September 4, 2012 Share Posted September 4, 2012 Pretty sure youre asking about ground clutter. The radar beam starts out at the ground and slowly increases in elevation as it travels away from the radar site. FFC the radar site that covers Atlanta is located in peachtree city. Link to comment Share on other sites More sharing options...
Shawn Posted September 5, 2012 Share Posted September 5, 2012 As MariettaWx said, most likely it is ground clutter. Here's an excerpt from NOAA on what it is: Echoes from surface targets appear in almost all radar reflectivity images. In the immediate area of the radar, "ground clutter" generally appears within a radius of 20 nm. This appears as a roughly circular region with echoes that show little spatial continuity. It results from radio energy reflected back to the radar from outside the central radar beam, from the earth's surface or buildings. Also, here is a site that can explain more about radar that I copied that excerpt from: http://weather.noaa.gov/radar/radinfo/radinfo.html Link to comment Share on other sites More sharing options...
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