Global warming- India may lose south west monsoon in next 150 years

A study says, India may lose one of its crucial lifelines the south west monsoon, which brings rains across the country during the summers, in the next 150 years. Researchers say, the phenomenon is the result of global warming which has led to increase in the rate of temperature rise over Arabian Sea. A new study by Indian Institute of Tropical Meteorology warns that this rise is reducing temperature difference between land and sea, known as Temperature Gradient, responsible for attracting rain causing winds from Arabian Sea towards Indian mainland. It says, once the gradient becomes zero, the monsoon winds will be replaced by dry easterly winds thus disturbing the flow of south-west monsoon. The Indian Meteorology Department has shown a 23 per cent reduced rain activity during the present season, which may be an indication of this phenomenon. Global warming, which is increasing the average temperature across the planet, is also behind the increasing temperature over the Arabian sea, the study says.