Consider the following statements with reference to Indian Ocean Basin-Wide (IOBW) index:1. It indicates the average sea-surface temperature variations across the tropical Indian Ocean.2. It has a stronger association with the Northern Hemisphere than the Southern Hemisphere of Earth.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?

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Consider the following statements with reference to Indian Ocean Basin-Wide (IOBW) index:

1. It indicates the average sea-surface temperature variations across the tropical Indian Ocean.

2. It has a stronger association with the Northern Hemisphere than the Southern Hemisphere of Earth.

Which of the statements given above is/are correct?

a)
1 only
b)
2 only
c)
Both 1 and 2
d)
Neither 1 nor 2

Correct answer is option 'A'. Can you explain this answer?

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Daily Current Affairs MCQ- May 14, 2024

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Consider the following statements with reference to Indian Ocean Basin...

According to the study Indian Ocean basin-wide (IOBW) index exhibits a close association with dengue outbreaks in both the Northern and Southern hemispheres.

It represents the average sea-surface temperature variations across the tropical Indian Ocean.
It has emerged as a key indicator for predicting the magnitude and timing of dengue epidemics in each country.
IOBW index’s association with the Southern Hemisphere is stronger than that with the Northern Hemisphere.
The index has a more pronounced impact on temperatures in tropical regions. Brazil, for example, bears a higher burden of dengue in the Southern Hemisphere.
The Northern Hemisphere witnesses a peak dengue epidemic period between July and October and the Southern Hemisphere in February and April, both in the summers.
Further, the amplitude of dengue incidence was high when the index was positive and low when it was negative.
The link between the Indian Ocean’s temperature and dengue incidence is likely due to its influence on regional temperatures through teleconnections, large-scale atmospheric patterns that can transfer heat and moisture across vast distances.

Key facts about Dengue

It is caused by the dengue virus (DENV)
Transmission: It is transmitted to humans through the bites of infected female mosquitoes, primarily the Aedes aegypti mosquito.
The severe form of dengue fever, also called dengue hemorrhagic fever, can cause serious bleeding, a sudden drop in blood pressure (shock) and death.
It is more common in tropical and subtropical climates.
Symptoms: The most common symptoms are high fever, headache, body aches, nausea and rash.

Hence only statement 1 is correct.

Answered by Notes Wala · View profile

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Consider the following statements with reference to Indian Ocean Basin-Wide (IOBW) index:1. It indicates the average sea-surface temperature variations across the tropical Indian Ocean.2. It has a stronger association with the Northern Hemisphere than the Southern Hemisphere of Earth.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?

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