Climate change and global warming

The Sun is the continuous source of the energy that causes the motion of the atmosphere and thereby controls weather and climate. Any change in the energy from the Sun received at the Earth’s surface will therefore affect our climate. The Earth’s climate has warmed over the last century. It is very likely that the primary cause of this global warming is the emission of greenhouse gases due to a range of human activities and the resulting increase in the concentrations of greenhouse gases in the atmosphere. Climate models indicate that the global warming and other climate changes will continue and accelerate through the coming century if emissions of greenhouse gases continue to increase. There are two well-known causes that affect the global warming and other climate changes. One of them is solar variation (mainly TSI) and other is increase in greenhouse gases (mainly increases of carbon dioxide, Co2 after industrial revolution). Solar impact on the Earth’s climate in the upper atmosphere interacts most directly with the radiation, particles and magnetic fields emitted by the Sun. Solar activities follow the approximately 11-year solar activity cycle. We have analysed long-term correlative behaviour of total solar irradiance (TSI), sunspot number (SSN), global surface temperature (GSTemp) and emission greenhouses gases (mainly Co2) during 1900 onwards. It is social need to awareness of maintain emission of greenhouse gases in present time; otherwise our future is very dangerous. Adverse impacts of climate change and challenges in near future along with perspective roll of above activities on recent climate change have also been discussed.

Rahul Shrivastava and Subhash Chand Dubey
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