Multi-Sensor Data Analysis of an Intense Weather Event: The July 2021 Lake Como Case Study
Author:
Mascitelli AlessandraORCID, Petracca Marco, Puca Silvia, Realini EugenioORCID, Gatti AndreaORCID, Biondi Riccardo, Anesiadou Aikaterini, Brocca LucaORCID, Vulpiani Gianfranco, Torcasio Rosa ClaudiaORCID, Federico StefanoORCID, Oriente Antonio, Dietrich StefanoORCID
Abstract
A comprehensive analysis of the July 2021 event that occurred on Lake Como (Italy), during which heavy hailstorms and floods affected the surroundings of Lake, is presented. The study provides a detailed analysis of the event using different observation sources currently available. The employed techniques include both conventional (rain gauges, radar, atmospheric sounding) and non-conventional (satellite-based Earth observation products, GNSS, and lightning detection network) observations for hydro-meteorological analysis. The study is split in three main topics: event description by satellite-based observations; long-term analysis by the ERA5 model and ASCAT soil water index; and short-term analysis by lightning data, GNSS delays and radar-VIL. The added value of the work is the near-real-time analysis of some of the datasets used, which opens up the potential for use in alerting systems, showing considerable application possibilities in NWP modeling, where it can also be useful for the implementation of early warning systems. The results highlight the validity of the different techniques and the consistency among the observations. This result, therefore, leads to the conclusion that a joint use of the innovative techniques with the operational ones can bring reliability in the description of events.
Subject
Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry
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