Amir Mohsen
متخصص بخش هواشناسی
Abstract: Tropical cyclones are the most hazardous weather systems, that form over warm ocean waters.
The frequencies of tropical cyclones show variabilities over all the oceanic basins, during the El‐Niño and El‐
Niño Modoki years. Recent studies have shown significant impact of air‐sea interaction processes like El‐Niño
and El‐Niño Modoki, on the cyclone activity over different ocean basins. The results suggest in most cases,
El‐Niño events suppresses the formation of cyclones over various basins. A recent study indicated that
concurrent occurrence of El‐Niño Modoki and positive Indian Ocean Dipole (IOD) events can generate more
cyclones over north‐west pacific. We propose to study the impact of El‐Niño Modoki events on the formation
of tropical cyclones over north Indian Ocean. Our present study suggests that the cyclogenesis formation
over the north Indian Ocean is a complex phenomena, as it is influenced by several coupled ocean
atmospheric phenomena such as ElNino, ElNino Modki, Indian Ocean Dipole and Madden Julian Oscillation. .
The frequencies of tropical cyclones show variabilities over all the oceanic basins, during the El‐Niño and El‐
Niño Modoki years. Recent studies have shown significant impact of air‐sea interaction processes like El‐Niño
and El‐Niño Modoki, on the cyclone activity over different ocean basins. The results suggest in most cases,
El‐Niño events suppresses the formation of cyclones over various basins. A recent study indicated that
concurrent occurrence of El‐Niño Modoki and positive Indian Ocean Dipole (IOD) events can generate more
cyclones over north‐west pacific. We propose to study the impact of El‐Niño Modoki events on the formation
of tropical cyclones over north Indian Ocean. Our present study suggests that the cyclogenesis formation
over the north Indian Ocean is a complex phenomena, as it is influenced by several coupled ocean
atmospheric phenomena such as ElNino, ElNino Modki, Indian Ocean Dipole and Madden Julian Oscillation. .
