Work

Decadal Variability of Tropical Cyclone Genesis Factors over the Arabian Sea During Post-Monsoon Season

Year: 2025

Type: article

Abstract: Arabian Sea (AS) and Bay of Bengal (BoB) cyclones around the Indian subcontinent cause widespread floods and other natural hazards. There is no single convincing answer to this puzzle in the era of global warming. The warming of the western and central Indian Ocean is one of the few prominent features of local warming. The availability of moisture in the atmosphere in the last decade is an important factor in the rapid intensification and strengthening of tropical cyclones (TCs) before landfall. Essentially, the AS basin has shown an upward trend in the number and intensity of very severe cyclones during the period of 2009–2019. The decadal variation (1991–2001, 2002–2011, and 2012–2021) in SST, vorticity, wind shear, and moisture is primarily responsible for the genesis and intensification of cyclones during the post-monsoon season (October–November–December) over the AS. The results showed that slight changes in wind conditions, such as increased wind shear and the northward shift of the Asian Jet Stream over the region, facilitate TC formation.

Source: Meteorology

DOI: 10.3390/meteorology4020008

Authors: Prabodha Kumar Pradhan, Vinay Kumar, Akhilesh Kumar Mishra, Lokesh Kumar Pandey, Nagarjuna Rao Dabbugottu

Institutions: National Centre for Medium Range Weather Forecasting, Ministry of Earth Sciences, Trident Academy of Technology, University of the Incarnate Word

Language: English

Topic: Tropical and Extratropical Cyclones Research

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDG: Climate action

Open Access status: gold

Estimated APC paid: $1,207