Global atmospheric changes versus the Indian rainfall variation

Abstract

Apropos the asymmetry in temperature at the surface as well as in the vertical atmospheric layers above the Earth’s surface is quite germane to the vantage point of societal and human impacts. They are also generally regarded as an important indicator of human-induced climate change. Even the cause of a global climate change is regarded due to the increase in temperature of the Earth’s atmosphere. This in turn also affects the Indian rainfall. Furthermore, it negatively influences the Indian climate, by increasing floods, hurricanes, and storms. So, analyzing the variation in global temperature change has become an integral part to further study the Indian rainfall variation. According to Sir Gilbert Walker, the Indian rainfall (summer monsoon) is a global phenomenon. There are many factors like jet streams, Tibetan Plateau, El Nino, Indian Ocean Dipole, monsoon trough, cyclonic storms, and mid troposphere cyclones which influence the monsoon. Despite an increase in temperature, the monsoon rainfall has shown a decreasing trend. Even, in recent years, extreme rain events (flood, drought) have increased. Thus, to enhance the Indian rainfall variation (especially monsoon rain), it is important to explore the global atmospheric changes and observe its relationship with the Indian rainfall.