NDLI: Observations of rain drop size distribution and rain attenuation of a satellite signal at a tropical location

Content Provider	IEEE Xplore Digital Library
Author	Chakravarty, K. Maitra, A.
Copyright Year	2009
Description	Author affiliation: S.K.Mitra Centre for Research in Space Environment, Institite of Radio Physics and Electronics, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata 700 009, INDIA (Chakravarty, K.; Maitra, A.)
Abstract	Measurement of rain drop size distribution (DSD) along with rain attenuation have been carried out at Kolkata (22.65°N, 88.45°E), India, a tropical location since 2004. On analyzing the rain event, it has been noted that the distribution of the larger drops have been found to dominate the growing phase of the event in comparison to the later part for identical rain rates. At the same time, the analysis of monthly variation of rain DSD spectrum shows that the number density of larger drops are greater for the pre-monsoon months in comparison to the monsoon period for similar rain rates. The seasonal variation of rain attenuation at Ku-band indicates the larger attenuation values in the pre-monsoon months than in the monsoon period for identical rain rates during the years, 2005–2007. This is basically due to the convective nature of the rainfall, accompanying thunderstorm that occur mostly in the pre-monsoon period. The convective process increases the rain height, which in turn results in high attenuation values in the pre-monsoon months of the year.
Starting Page	1
Ending Page	4
File Size	3297958
Page Count	4
File Format	PDF
ISBN	9781424448180
DOI	10.1109/AEMC.2009.5430570
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-14
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rain Satellite broadcasting Optical attenuators Open systems Attenuation measurement Size measurement Extraterrestrial measurements Sampling methods Optical sensors Physics
Content Type	Text
Resource Type	Article

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