Fine line

From Glossary of Meteorology
Revision as of 18:01, 26 January 2012 by imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == fine line == </div> <div class="definition"><div class="short_definition">A narrow [[radar ...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



fine line

A narrow radar echo indicating a boundary (such as a frontal boundary, gust front, or dryline) across which a density or moisture discontinuity exists.

The reflectivity is apparently explained by scattering from the refractive index gradients across the discontinuity and from insects and insect-eating birds that are concentrated along the line.
See clear-air echo.