CURRENT AFFAIRS

2023

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An increase in La Nina patterns will have which effect on Australia?
A
More droughts in Eastern Australia.
B
More floods in Western Australia.
C
Higher levels of rainfall and more floods in Eastern Australia.
D
Fewer droughts across Australia.
Explanation: 

Detailed explanation-1: -The increased rainfall and cloudiness in the western Pacific associated with La Niña usually means above-average winter–spring rainfall for Australia, particularly across the east and north. The six wettest winter–spring periods on record for eastern Australia occurred during La Niña years.

Detailed explanation-2: -La Niña years tend to see cooler than average daytime temperatures across most of mainland Australia south of the tropics, particularly during the second half of the year. Due to increased cloud cover and hence warmer nights, regions of southern New South Wales and northern Victoria can experience less frost days.

Detailed explanation-3: -La Niña’s Impact on Australia The chance of widespread flooding increases, especially on the east coast which is usually less affected by La Niña during Winter, but will have wet and flooding Spring and Summers. So ensure you have a plan in place if you live in an area prone to floods.

Detailed explanation-4: -With La Nina, sea surface temperatures in the eastern Pacific Ocean are cooler than normal while waters in the western tropical Pacific are warmer than normal, generating moisture that brings rain to eastern and central Australia.

Detailed explanation-5: -Effects of La Niña La Niña is characterized by lower-than-normal air pressure over the western Pacific. These low-pressure zones contribute to increased rainfall. Rainfall associated with the summer monsoon in Southeast Asia tends to be greater than normal, especially in northwest India and Bangladesh.

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