Recently, Australian Bureau of Meteorology has reported a shift in the Indian Ocean Dipole (IOD) index in recent days.
The IOD index has increased from +0.34°C to +0.79°C, surpassing the positive IOD threshold of +0.4°C.
Last Positive IOD event occurred in 2019.
About Indian Ocean Dipole (IOD):
IOD signifies the fluctuation in sea-surface temperatures from warm to cool in the Indian Ocean area south of Sri Lanka.
The IOD is defined by the difference in sea surface temperature between western Indian Ocean and eastern Indian Ocean south of Indonesia.
The IOD affects the climate of Australia and other countries that surround the Indian Ocean Basin, and is a significant contributor to rainfall variability in this region.
About IOD index:
IOD index is defined as the difference between the mean sea surface temperature in the western Indian Ocean and mean sea surface temperature in the eastern Indian Ocean.
When the IOD index is positive, the phenomenon is referred to as the positive IOD and when it is negative, it is referred to as the negative IOD.
Positive IOD
Negative IOD
Warmer sea surface temperatures in the western Indian Ocean relative to the east.
Indonesia and Australia tend to be drier than normal, which increases the chances of bushfires, while eastern Africa tends to be wetter than normal, increasing the likelihood of floods.
It helps rainfall along the African coastline and also over the Indian subcontinent.
Positive IOD event is known to help the South-West monsoon.
Cooler sea surface temperatures in the western Indian Ocean relative to the east.
Winds become more westerly, bringing increased cloudiness to Australia’s northwest.
Indonesia and Australia tend to be wetter than normal, while eastern Africa tends to be drier than normal.
Physics Wallah is an Indian online education platform, that provides accessible & comprehensive learning experiences to students of classes 6 to 12 and those preparing for JEE and NEET exams. We also provide extensive NCERT solutions, sample papers, NEET, JEE Mains, BITSAT previous year papers, which makes us a one-stop solution for all resources. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app.
We Stand Out because
We successfully provide students with intensive courses by India's qualified & experienced faculties. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We believe in empowering every single student who couldn't dream of a good career in engineering and medical field earlier.
Our Key Focus Areas
Physics Wallah’s main focus is to create accessible learning experiences for students all over India. With courses like Lakshya, Udaan, Arjuna & many others, we have been able to provide a ready solution for lakhs of aspirants. From providing Chemistry, Maths, Physics formulae to giving e-books of eminent authors, PW aims to provide reliable solutions for student prep.
What Makes Us Different
Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others.
Comprehensive coverage with a concise format Integration of PYQ within the booklet Designed as per recent trends of Prelims questions हिंदी में भी उपलब्ध
Quick Revise Now ! UDAAN PRELIMS WALLAH
Comprehensive coverage with a concise format Integration of PYQ within the booklet Designed as per recent trends of Prelims questions हिंदी में भी उपलब्ध
<div class="new-fform">
</div>
Subscribe our Newsletter
Sign up now for our exclusive newsletter and be the first to know about our latest Initiatives, Quality Content, and much more.