WSR-88D

• Scanning Strategy: Fixed VCPs
• *Sometimes miss cloud/precipitation tops in VCP 21
• Sawtooth trends (especially height)
• *Scan sometimes above low altitude boundaries and Lake Effect Snow

• The Nature of Radar
• Beam spreading: *Resolution changes radically with range

Range (nm)	Pulse Volume(nm^3)	Beam Diameter(nm)
30	0.05	0.5
60	0.21	1.0
120	0.86	2.0
180	1.93	3.0
240	3.43	4.0

• *Range ambiguity
• Hydrometeor distribution, shape, phase affects return
• Atmospheric refraction not always "standard"
• *Algorithms imperfect, sometimes dependent on range

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