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IJRSP Vol.39(3) [June 2010] >


Title: Changes in the surface UV radiation and sferics over Kalyani (West Bengal) during the solar eclipse on 22 July 2009
Authors: Bhattacharya, R
Bhoumick, A
Bhattacharya, A
Pal, S
Bhattacharya, A B
Keywords: UV radiation
Solar eclipse
Ionospheric propagation
Issue Date: Jun-2010
Publisher: CSIR
PACS No.: 95.10.Gi; 94.20.wq
Abstract: The present study was mainly confined to the investigation of the responses of downwelling solar radiation fluxes in ultraviolet wavelengths to the partial solar eclipse event on 22 July 2009 besides an investigation on sferics at 27 kHz. The measurements were done at ground-based station of Kalyani (22°58'N, 88°28'E) where the maximum solar coverage was more than 90%. The optical properties and associated meteorological parameters are simultaneously examined. During the partial solar eclipse, UV components of sunlight reaching the Earth’s surface were found to decrease significantly in addition to luminosity. The surface air temperature was dropped but relative humidity was increased. A characteristic short period fading was also recorded at 27 kHz. The results have been interpreted by considering the impacts of solar eclipse on UV radiation and ionospheric propagation.
Page(s): 132-137
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.39(3) [June 2010]

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