DAILY NEWS ANALYSIS

13 August, 2022
6 Min Read

Indian Ocean Dipole (IOD)

The likelihood of above-average rainfall over much of Australia has increased due to a negative Indian Ocean dipole event that has been proclaimed.

What is the Indian Ocean Dipole (IOD)?

It is an atmosphere-ocean coupled phenomenon in the tropical Indian Ocean (like the El Nino is in the tropical Pacific), characterized by a difference in sea-surface temperatures.
A ‘positive IOD’ — or simply ‘IOD’ — is associated with cooler than normal sea-surface temperatures in the eastern equatorial Indian Ocean and warmer than normal sea-surface temperatures in the western tropical Indian Ocean.
The opposite phenomenon is called a ‘negative IOD’, and is characterised by warmer than normal SSTs in the eastern equatorial Indian Ocean and cooler than normal SSTs in the western tropical Indian Ocean

More About Indian Ocean Dipole (IOD)

The difference in sea surface temperature between two regions (or poles, hence a dipole) — a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia — defines it.
According to science, the IOD is an ENSO-like coupled ocean-atmosphere event that occurs in the equatorial Indian Ocean.
It is believed that the IOD and ENSO occurrences are connected by the Walker Circulation's westward expansion and its related Indonesian throughflow (the flow of warm tropical ocean water from the Pacific into the Indian Ocean).
The IOD significantly contributes to the variability of rainfall in this area and has an impact on the climate of Australia and other nations that border the Indian Ocean Basin.

The positive event linked to it

Less cloud cover to Australia's northwest, warmer sea surface temperatures in the western Indian Ocean compared to the east, easterly wind anomalies across the Indian Ocean, and less rainfall over southern Australia and the Top End

Negative event:

Winds turn more westward, increasing cloud cover in Australia's northwest and increasing rainfall in the Top End and southern Australia due to cooler sea surface temperatures in the western Indian Ocean compared to the east.

Source: The Indian Express

Join Our Telegram

Voice clone-AI

Pradhan Mantri Suryodaya Yojana

06 Feb, 24
SHARE

Recently, Prime Minister announced Pradhan Mantri Suryodaya Yojana under which 1 crore households will get rooftop solar power systems. India’s Status of Current Solar Capacity India currently stands at 4th place globally in solar power capacity. As per Ministry of New an

Foreign Contribution Regulation Act (FCRA)- NGO

06 Feb, 24
SHARE

The Foreign Contribution Regulation Act, 2010 (FCRA) registration of two prominent non-governmental organisations (NGOs) — Centre for Policy Research (CPR) and World Vision India (WVI) have been cancelled this month. What is FCRA? Key provisions of FCRA, 2010 Key aspects Description

Voice clone-AI

06 Feb, 24
SHARE

Voice clone fraud has been on the rise in India. AI voice cloning – It is the process of creating a synthetic replica of a person’s voice through machine learning and speech synthesis technology.It is called as voice deepfakesor audio deepfakes. Objective – To achieve a high level of na

Science communication- how to promote

06 Feb, 24
SHARE

Steps taken by India to promote Science Communication Publications and Information Directorate (PID) - An organisation under Council of Science and Industrial Research (CSIR) established in 1951 for publishing and disseminating scientific information in India. National science magazines- The PI

Universal Basic Income (UBI)- Analysis

05 Feb, 24
SHARE

Universal Basic Income (UBI) can strengthen welfare architecture and unlock the nation’s latent demographic potential. UBI - It is an income support mechanism typically intended to reach all or a very large portion of the population regardless of their earnings or employment status. Objective- To provide enough to co

Quick Links Testimonials FAQ

Crash Course

Regular Modules 2024

Mains

Optional

Indian Ocean Dipole (IOD)

Indian Ocean Dipole (IOD)

Pradhan Mantri Suryodaya Yojana

Foreign Contribution Regulation Act (FCRA)- NGO

Voice clone-AI

Science communication- how to promote

Universal Basic Income (UBI)- Analysis

DNA

06 Feb,2024

GS-III

PT Pickups

Toppers

Search By Date

Top Editorials

UPSC Courses

Saarthi Mentorship Programme

Important Tags

Articles:Geography And Environment

Articles: History Culture Society

Articles: Governance & National Issues

Articles: IR & IO

Articles: Economic Development & Economic Issues

Articles: S&T Internal Security

Articles: Ethics & Others

Articles: Others

Newsletter Subscription

SMS Alerts

Important Links