India's monsoons more variable than thought

2019-02-27 04:20:01

INDIA’s monsoon may be much more variable than previously thought. A study of a cave stalagmite shows that in the past the rains have declined drastically for periods lasting up to 30 years, causing severe droughts. The monsoon supplies nearly 80 per cent of south-east Asia’s rainfall, and is vital for agriculture. Instrumental records going back 150 years show that the monsoon has occasionally failed for several years at a time. To study changes over longer time periods, Ashish Sinha of California State University in Carson,