Explanation:

 1.  During El Nino years, the entire Pacific is warmer than usual. And that can take Asia’s breath away during the summer. A hotter Pacific Ocean can effectively compete with the hot Asian landmass, so that no cool, moist air is drawn landward, and ultimately, the monsoons fail over India.  http://mit.whoi.edu/student-research?tid=1423&cid=53506

The sea surface temperature in the Indian Ocean is a mirror image of the Pacific; it is warm in the east and cool in the west. The Indian Ocean has its own seesaw behavior, the Indian Ocean Dipole. During a so-called positive Indian Ocean Dipole event, warm waters in the east spread toward the west, somewhat like in an El Nino. The winds that blow along the equator also switch directions and blow toward the west. These westward-blowing equatorial winds enhance monsoon winds and create a more powerful monsoon. India’s largest rainfall in the past 150 years occurred during a positive Indian Ocean Dipole event.

2.  Second statement is related to Indian Ocean Dipole event.  The Indian Ocean has its own seesaw behavior, the Indian Ocean Dipole. During a so-called positive phase, warmer-than-usual water temperatures in the western Indian Ocean bring heavy rains to East Africa and India and colder-than-usual waters bring drought to Southeast Asia. In the negative phase, ocean and monsoonal conditions reverse.