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

World bank logistic performance index 2023

World bank logistic performance index 2023

28 Apr, 23
SHARE

India is now ranked 38th out of 139 nations in the Logistic Performance Index (LPI) 2023 of the World Bank. From its previous rankings of 44th in 2018 and 54th in 2014, this is a notable improvement. Earlier, the Logistics Ease Across Different States (LEADS) Report 2022 was published by the Ministry of Commerce and Industry. About Logi

Smuggling of Gold

28 Apr, 23
SHARE

Airports discovered more than 63% of this illegal gold. The Department of Revenue Intelligence recently conducted the Golden Dawn Operation across India, seizing 101.7 kg of illegal gold valued at Rs 51 crore. Despite the fact that India receives a legal import of about 800-1,000 tonnes of gold each year, the illicit market is thought to be

India-Thailand Relations

27 Apr, 23
SHARE

Both parties expressed satisfaction with the ongoing bilateral defence cooperation at the 8th India-Thailand Defence Dialogue, which was held in Bangkok, Thailand. Cultural ties and mutual cooperation that have been shaped by thousands of years of lasting historical and cultural ties characterise India and Thailand relations. Highlight

Translocation of Elephants

27 Apr, 23
SHARE

The Kerala government's appeal of the order of the Kerala High Court is rejected by the Supreme Court. The Kerala government's appeal against the Kerala High Court's directive to move Arikomban (Wild Elephant), the "rice tusker" of Munnar, to the Parambikulam tiger reserve was recently dismissed by the Supreme Court.

Global Buddhist Summit

26 Apr, 23
SHARE

Global Buddhist Summit In order to improve diplomatic and cultural ties with other nations, the Ministry of Culture recently organised the First Global Buddhist Summit 2023 in collaboration with the International Buddhist Confederation (IBC). About the summit "Responses to Contemporary Challenges: Philosophy to Praxis" is