Will the South Asian monsoon overturning circulation stabilize any further?

Understanding the response of the South Asian Monsoon (SAM) system to global climate change is an interesting scientific problem that has enormous implications from the societal viewpoint. There is now a growing recognition that the rapid increase of moisture in a warming climate can potentially enhance the stability of large-scale tropical circulations. In this work, the authors have examined the stability of the SAM system based on climate datasets over the past half century; and addressed the issue of likely future changes in the SAM in response to global warming. Results suggest a significant weakening of the monsoon flows in the last 50 years, corroborated by a decrease in the frequency of moderate-to-heavy monsoon rainfall days and related climatic observations over the Western Ghats.