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Rovere, Alessio
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Rovere, Alessio
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- PublicationOpen AccessFingerprinting Mediterranean hurricanes using pre-event thermal drops in seawater temperature(2024-04-05)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ;Extreme atmospheric-marine events, known as medicanes (short for "Mediterranean hurricanes"), have affected the Mediterranean basin in recent years, resulting in extensive coastal flooding and storm surges, and have occasionally been responsible for several casualties. Considering that the development mechanism of these events is similar to tropical cyclones, it is plausible that these phenomena are strongly affected by sea surface temperatures (SSTs) during their development period (winter and autumn seasons). In this study, we compared satellite data and the numerical reanalysis of SSTs from 1969 to 2023 with in situ data from dataloggers installed at different depths off the coast of southeastern Sicily as well as from data available on Argo floats on the Mediterranean basin. A spectral analysis was performed using a continuous wavelet transform (CWT) for each SST time series to highlight the changes in SSTs prior to the occurrence of Mediterranean Hurricanes as well as the energy content of the various frequencies of the SST signal. The results revealed that decreases in SST occurred prior to the formation of each Mediterranean hurricane, and that this thermal drop phenomenon was not observed in intense extra-tropical systems. The spectral analyses revealed that high CWT coefficients representing high SST energy contents were observed before the occurrence of a Mediterranean hurricane. This information may provide a useful fingerprint for distinguishing Mediterranean hurricanes from common seasonal storms at the onset of these events.35 4 - PublicationRestrictedReply to comment by Evelpidu N., and Pirazzoli P. on “Tidal notches in the Mediterranean sea: A comprehensive analysis”(2016)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ; ; ; ; ; ; ; ; ;We take the chance offered by the comment of Evelpidou and Pirazzoli (2015a) to our paper (Antonioli et al., 2015) to clarify some aspects of our work. We reinforce our statement that a present-day tidal notch is almost continuously developed along much of the central Mediterranean coast.129 3