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A positive IOD index often negates the effect of ENSO, resulting in increased monsoon rains in years such as 1983, 1994, and 1997. [28] Further, the two poles of the IOD – the eastern pole (around Indonesia) and the western pole (off the African coast) — independently and cumulatively affect the quantity of monsoon rains. [28]
As the year began, a tropical low was over Australia, [4] and Cyclone Ula was moving toward Tonga. [5] Ula was followed by another 16 tropical cyclones, [6] [7] including Cyclone Winston, which was the most intense tropical cyclone in the Southern Hemisphere on record, with 10 minute sustained winds of 280 km/h (175 mph), and a minimum pressure of 884 mbar (26.1 inHg).
Roxy Mathew Koll is a climate scientist at the Indian Institute of Tropical Meteorology (IITM), Pune. [1] [2] His research focuses on climate change and extreme weather events in the Indo-Pacific region, with significant contributions to the understanding of Indian Ocean warming, monsoon dynamics, heatwaves, and tropical cyclones.
Heavy rain triggered floods and mudslides and downed trees in many parts of Sri Lanka, killing at least six people and forcing authorities to close schools in some areas, officials said Friday.
In the south of the country, rain was so rare that the region had its driest monsoon season since 1901, the IMD said. The government of Karnataka in southern India declared drought conditions in ...
The Indian Meteorological Department had predicted good rainfall from the monsoon clouds earlier this year, but extreme heat in northern India stalled the rain's progress. The agency revised its ...
The Indian Ocean and its surrounding atmosphere still hold their heat, causing cold wind to sweep down from the Himalayas and Indo-Gangetic Plain towards the vast spans of the Indian Ocean south of the Deccan peninsula. This is known as the Northeast Monsoon or Retreating Monsoon.
Three years of failed monsoon in 2016, 2017, and 2018. The 2018 monsoon season was one of the driest ever recorded in Chennai, as only 343.7 mm of rain had fallen compared to an average of 757.6 mm, which was a 55% rainfall deficit. Additionally, the entire state of Tamil Nadu had recorded a 23% rainfall deficit in that season. [11]