CLIMATE OF INDIA
EL NINO AND SOUTHERN OSCILLATIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Cooler ocean water and drought
|
|
|
Warmer ocean water and increased rain
|
|
|
Cooler ocean water and increased rain
|
|
|
Warmer ocean water and drought
|
Detailed explanation-1: -Rain clouds normally form over warm ocean water. La Niña blows all of this warm water to the western Pacific. This means that places like Indonesia and Australia can get much more rain than usual. However, the cold water in the eastern Pacific causes less rain clouds to form there.
Detailed explanation-2: -The normal easterly trade winds weaken and sometimes, the winds will switch and blow from the west to the east! The result is drier weather conditions over the Western Pacific which can impact food and water availability, like taro. Mostly, El Niño conditions linger for a year, but sometimes longer.
Detailed explanation-3: -When the trade winds are stronger than normal during La Niña, the winds push more surface water to the western half of the Pacific basin. The pool of warm water grows deeper, storing excess heat at depth, and allowing for colder, deeper water to rise to the surface in the eastern half of the Pacific basin.
Detailed explanation-4: -La Niña is characterized by unusually cold ocean temperatures in the Equatorial Pacific, compared to El Niño, which is characterized by unusually warm ocean temperatures in the Equatorial Pacific.