Department of Physics, S.G.S Govt. P.G. Sidhi (MP) India

Email:subhas1236@rediffmail.com

The potential role of solar variations in modulating recent climate has been debated for many decades. Before the satellite period solar variability had been scaled from proxy data. So, the large uncertainty exists about potential role of solar variations in modulating recent climate. Recently, satellite observation/data and number of newly investigated solar features changes the old concepts. The Sun has a strong influence on climate. Important sources are cosmic rays which come from outer space and from the surface of the Sun, terrestrial radio-nuclides which occur in the earth's crust in various geological formations in soils, rocks, building materials, plants, water, food, air and in the human body itself. With the increasing use of radiation in health facilities, scientific research, industry and agriculture, the study of impact of low-level ionizing radiation on environment and possible health effects on future generations has been a cause of concern in recent years. The long-term trends in solar irradiance appear more plausible and produced modeled climates in better agreement. Solar activity varies on shorter-time scales, including the 11-year sunspot cycle and longer-term as Milankovitch cycle. The cyclical nature of the Sun's energy output is not yet fully understood; it differs from the very slow change that is happening within the Sun as it ages and evolves. In the present work, we have discussed effect of various solar influences to increase in greenhouse gases as well as climate change in the light of various latest studies.