What is meant by Indian Ocean dipole?
The Indian Ocean Dipole (IOD) is defined by the difference in sea surface temperature between two areas (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.
What years were La Nina years?
Since the start of the 20th century, La Niña events have occurred during the following years:
- 1903–04.
- 1906–07.
- 1909–11.
- 1916–18.
- 1924–25.
- 1928–30.
- 1938–39.
- 1942–43.
What is Indian Ocean dipole for kids?
The Indian Ocean Dipole, or IOD, is a natural climate phenomenon that influences rainfall patterns around the Indian Ocean, including Australia. During a negative phase, waters in the eastern Indian Ocean (near Indonesia) are warmer than normal, and the western Indian Ocean (near Africa) are cooler than normal.
Is this La Niña year?
La Niña conditions have officially developed and are expected to remain in place through the entirety of winter 2021-2022. Per NOAA, La Niña is defined as cooler than normal sea-surface temperatures in the central and eastern tropical Pacific Ocean that impact global weather patterns.
When was the most recent Indian Ocean dipole negative phase?
2016
The last time a negative dipole event was declared was in 2016, between June and September.
Who discovered the Indian Ocean dipole?
IOD (Indian Ocean Dipole) A climatic phenomenon was discovered in 1999 by Dr. Toshio Yamagata (Director of climate variations research program, University of Tokyo), Dr. Saji Hameed and other staff and named the IOD (Indian Ocean Dipole).
Is this year an El Nina year?
This La Nina is expected to last through the early spring 2022. For the upcoming winter season, which extends from December 2021 through February 2022, there is an 87% chance of La Nina. Previous La Ninas occurred during the winter of 2020-2021 and 2017-2018, and an El Nino developed in 2018-2019.