As I watch only a few very large rain drops falling (20:30) I wonder
if this is going to show up as heavy rain or light rain on the radar.
Is it rate that matter or will drop size make a difference?

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simon sheaf
sheffield south yorkshire
http://www.anycities.com/user/yorkshireweather
(new photos July 03)

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The equation says that radar reflectivity is relative to sum of N
times D in power of six, where D is drop diameter and N number of
drops of that size in measurement volume.

Thus, one drop 2mm in diameter gives you as big reflectivity as 64
drops of 1 mm.

Elena



(Simon S) wrote in message m...
As I watch only a few very large rain drops falling (20:30) I wonder
if this is going to show up as heavy rain or light rain on the radar.
Is it rate that matter or will drop size make a difference?

================================================
simon sheaf
sheffield south yorkshire
http://www.anycities.com/user/yorkshireweather
(new photos July 03)

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