...Bangalore: The southwest monsoon, responsible for 80 per cent of the country’s annual rainfall and the basis of Indian agriculture, has substantially reduced in the last 50 years, shrinking in duration, spatial distribution and quantum.
The quantum of pre-monsoon rainfall (May 15 to 31) has decreased by 59 percent, and post monsoon rainfall (September 15 to October 10) by 39 per cent in the last 50 years, according to a research paper published in Geophysical Research Letters by K. V. Ramesh and P. Goswami from the Centre for Mathematical Modelling and Computer Simulation on December 5.
While the all India monsoon (June to September) itself does not show any significant decline in quantum, there has been a 30 per cent reduction in the spatial coverage of the monsoon. These trends were arrived at through the analysis of daily rainfall data with the Indian Meteorological Department, between 1951 and 2003....
The quantum of pre-monsoon rainfall (May 15 to 31) has decreased by 59 percent, and post monsoon rainfall (September 15 to October 10) by 39 per cent in the last 50 years, according to a research paper published in Geophysical Research Letters by K. V. Ramesh and P. Goswami from the Centre for Mathematical Modelling and Computer Simulation on December 5.
While the all India monsoon (June to September) itself does not show any significant decline in quantum, there has been a 30 per cent reduction in the spatial coverage of the monsoon. These trends were arrived at through the analysis of daily rainfall data with the Indian Meteorological Department, between 1951 and 2003....
