International Journal of Innovative Research and Development

Abstract

The primary energy source of the geomagnetic phenomena is the sun which transfers energy to the earth’s magnetosphere by means of solar wind. As we know that the sun and solar wind form a complex system which can influence the system consisting of earth and magnetosphere with wide variations in their parameters. The response of equatorial and low latitude ionosphere to storms varies from event to event and from place to place, studies on geomagnetic storms and space weather research got wide recognition in the scientific community. As the storms offer an excellent opportunity to study plasma dynamics as well as ionosphere – thermosphere coupling, we proposed to make a comprehensive study on the severe magnetic storms and retrieve the most salient ionospheric effects of the geomagnetic storms. The observations of solar wind variances are imperative for human activity; hence a statistical study of solar wind parameters, solar indices and ionospheric parameters which play an important role in the prediction of geomagnetic storms have been presented for a period of 2006 – 07, a solar minimum year.

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Abstract

Bangalore is the third most populous cities of India with a total population of over 11.5 million. This city has witnessed a huge growth in its population between years 2001 (5.1 million)   to 2016(11.5 million). Bangalore lies approximately at a height of 3000 ft. above sea level and positioned at 12.96⁰N, 77.56⁰E latitude and longitude. Because of its elevation it enjoys cool climatic conditions yearlong when compared to other stations in India. However huge increase in population enhances urbanization which leads to severe anthropogenic activity in this station. Keeping this in view an attempt was made to study the incoming solar ultraviolet radiation for the period 2006-2015 and its impact if any on this station. It is observed that the UV Index at Bangalore has a minimum value of 9.15 and a maximum value of 13.4 for this decade 2006-2015. This indicates that the city is receiving maximum ultraviolet radiation with high to very high risk. Keeping this in view measures need to be taken for safeguarding the people of Bangalore from ultraviolet radiation. 

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