Indian Institute of Technology (IIT), Kharagpur, researchers developed Early Cyclone Detection Technique to strengthening of tropical cyclones in the atmospheric column prior to satellites over ocean surface in the North Indian Ocean region.
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Researchers have devised a novel method using Eddy detection technique to investigate the formative stages and advance detection time of tropical cyclogenesis in the region.
Early detection of tropical cyclones has wide socio-economic implications. So far, remote sensing techniques have detected them the earliest. However, this detection was possible only after system developed as a well-marked low-pressure system over the warm ocean surface.
The method aims to identify initial traces of pre-cyclonic eddy vortices in the atmospheric column and track its spatio-temporal evolution. They used a coarser grid resolution of 27 kilometers for identification and a finer resolution of nine km to evaluate the characteristics of eddy vortices.
The study was conducted with cases of four post-monsoon severe cyclones — Phailin (2013), Vardah (2013), Gaja (2018), Madi (2013), and two pre-monsoon cyclones Mora (2017) and Aila (2009) that developed over North Indian Ocean.
