Long-term trend and multidecadal variability of Madden Julian Oscillation phase speed modulated by horizontal moisture gradient

Panini Dasgupta1,2, Roxy Mathew Koll1, A.G. Prajeesh1, J S Saranya3 and Chennu Venkateswara Naidu4, (1)Indian Institute of Tropical Meteorology, Pune, India, (2)Andhra University, Department of Meteorology and Oceanography, Visakhapatnam, India, (3)Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South), (4)Andhra University, Department of Meteorology and Oceanography, Vishakhapatnam, India