The effect of 27-day solar rotation on earth magnetosphere

In this paper we present the results of an investigation of the sequence of events from the Sun to the Earth that ultimately led to the geomagnetic activity. We observed from that the good correlation between geomagnetic index Dst and B x V has been observed to be 0.77. The long-term variation of 27 day has shown average correlation between interplanetary and geomagnetic parameters for cycles 22, 23 and 24. The correlation coefficient between solar wind speed with geomagnetic indices Kp, Ap and Dst for the cycles 22, 23 and 24 is found to be 0.69, 0.65 and 0.57 respectively. The origins and outcome of life on Earth are intimately connected to the way the Earth responds to the Sun's variations. The solar activity and the space magnetic storms affect in various ways earth's magnetosphere. Solar conditions are constructive for the progress of electromagnetic disturbances in geospace, which can effectively influence the performance and reliability of space and ground-based technological systems. As the sphere of the human environment and exploration continues to expand towards space, understanding the effects of our active Sun, becomes day after day more important. This paper studied present understanding of the dynamics of the solar-terrestrial environment and its impacts on the earth's magnetosphere.