On the peculiar shape of sporadic-Eclouds

R. From W. and Whitehead J.D. (1978) On the peculiar shape of sporadic-Eclouds. Journal of Atmospheric and Terrestrial Physics, 40 9: 1025-1028. doi:10.1016/0021-9169(78)90006-5


Author R. From W.
Whitehead J.D.
Title On the peculiar shape of sporadic-Eclouds
Journal name Journal of Atmospheric and Terrestrial Physics
ISSN 0021-9169
Publication date 1978-01-01
Sub-type Article (original research)
DOI 10.1016/0021-9169(78)90006-5
Open Access Status Not yet assessed
Volume 40
Issue 9
Start page 1025
End page 1028
Total pages 4
Subject 1902 Film, Television and Digital Media
1908 Geophysics
Abstract Theoretical and experimental evidence is presented that sporadic-E clouds are often curved concavely on their lower side so as to focus a radio echo to the ground. The horizontal extreme of observed clouds appears to be ~ 40 km with a central core of very high electron density about 5 km across. To model the observations, a wind shear pattern with a horizontal scale of S km is required. Because of their shape which leads to the angle of arrival of echoes changing rapidly the clouds are often difficult to track across the sky using a h.f. radar system. Individual clouds are often observed to be tilted about 10° from the horizontal.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 28 Jun 2016, 13:01:59 EST by System User