Question

Used to collect data to predict an El Niño

Answer 1

There are several advanced technologies have been used to in collecting data to predict El Niño. Radiosondes are used to monitor global weather and climate patterns. Satellites are also used to provide data on wind, tropical rainfall, and ocean temperature patterns. To monitor the sea-surface and upper ocean temperatures they used Ocean buoys. And to gather data of the weather around the world, Super Computers are used. 

Answer 2

Answer

Weather buoys

Explanation

NOAA or National Oceanic and Atmospheric Administration is an American  scientific agency within the United States Department of Commerce that focuses on the conditions of the oceans, major waterways, and the atmosphere. NOAA uses Weather buoys   to collect data to predict an El Niño.  EL Nino  is the cycle of warm and cold temperatures, as measured by sea surface temperature and it is accompanied by high air pressure in the western Pacific and low air pressure in the eastern Pacific.

Weather buoys are instruments which collect weather and ocean data within the world's oceans, as well as aid during emergency response to chemical spills, legal proceedings, and engineering design