What is it about?
Observations reveal that strong moisture-induced heatwaves are associated with midlatitude Rossby waves intruding over the Indian region through a Europe–Middle East–Indian Ocean pathway. The current study reveals how moisture-driven heatwaves in India are intensified by the superposition of extratropical waves and the regional heat source over Bay of Bengal.
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Why is it important?
In a warming world, heatwaves over India have become increasingly intense, causing severe health impacts. Especially, moisture-driven heatwaves are extremely lethal. Understanding the process of moist-heatwave intensification is extremely important. The current analysis provides observation-based evidence and model simulation results to understand the intensification.
Perspectives
The article is the culmination of extensive work aimed at improving our understanding of heatwaves. The work is reported as a PhD work of the first author. Publishing a paper on Rossby Waves in the theme "Waves to Weather" in the Journal of Atmospheric Sciences is an extremely satisfying experience.
Rajib Chattopadhyay
Indian Institute of Tropical Meteorology
Read the Original
This page is a summary of: Dynamics of Heatwave Intensification over the Indian Region, Journal of the Atmospheric Sciences, December 2025, American Meteorological Society,
DOI: 10.1175/jas-d-24-0093.1.
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