Details:

Personal Author:
Gossard, Earl E. ; Strauch, Richard
Gossard, Earl E. ; Strauch, Richard Less -
Corporate Authors:
Wave Propagation Laboratory
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research)
Description:
There are occasions when radar return from a volume of cloud is unexpectedly large if it is presumed to be caused by the classical mechanism of incoherent scatter from individual cloud droplets. Such a mechanism predicts the scattered power to be proportional to the inverse 4th power of the wavelength. The observed weaker wavelength dependence could result from Bragg-coherent scatter from the ensemble of droplets or it could result from an enhancement by the cloud of inhomogeneities in the dielectric constant of the gaseous medium within the cloud.

Both mechanisms are discussed and compared with data acquired in a forward scatter mode by the WPL 3 cm radar system. Observed differences between the in-cloud and out-of-cloud refractive index spectra are discussed.


Keywords:
[+]
Clouds
Radar Meteorology
Refractive Index

Series:
NOAA technical memorandum ERL WPL ; 44
Document Type:
Technical memorandum
Rights Information:
Public domain
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:b28cf3616576e1523480400207a3c10cb4bc38743544f59b5e0e36718e0d999f
File Type:

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