An erratic shift in the Indian Ocean Dipole / Indian Summer Monsoon Rainfall relationship and periodicity during the last 200 years

Pushpendra Pandey1,2, Mayank Shekhar1, Parminder S Ranhotra1 and Anupam Sharma1, (1)Birbal Sahni Institute of Palaeosciences, Lucknow, India, (2)Academy of Scientific & Innovative Research, Ghaziabad, India