On fine structure of dot echoes as observed by acoustic sounder
作者:
A. K. DE,
S. TRIPATHY,
J. DAS,
期刊:
International Journal of Remote Sensing
(Taylor Available online 1994)
卷期:
Volume 15,
issue 11
页码: 2157-2165
ISSN:0143-1161
年代: 1994
DOI:10.1080/01431169408954235
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Sometimes in the lower atmospheric boundary layer, depending upon the prevailing micro-/meso-scale meteorological condition, ‘dot’ (also known as ‘lump’) type echo structures appear generally during night-time with light wind and stable stratifications. They are associated often with disturbed atmospheric boundary layer conditions like the occurrence of thunderstorms and/or of precipitation. Digitization and scanning of individual dot/lump echo structure can indicate a cluster of points with varying echo intensity levels. In the coastal region of Calcutta they are found to be spreading vertically and the size of the cluster depends on the vertical height of occurrence. Using image processing technique fine structures of these echoes have been processed, their statisticalnature has been analysed and reported in this paper.
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