Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events

Different giant and very large hail events have occurred in Catalonia (NE of the Iberian Peninsula) in the last three years, with stones ranging between 8 and more than 10 cm in diameter. These sizes have not occurred in this area in at least thirty years. This research analyzed all those events wit...

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Main Authors: Tomeu Rigo, Carme Farnell
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Atmosphere
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Online Access:https://www.mdpi.com/2073-4433/16/1/33
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author Tomeu Rigo
Carme Farnell
author_facet Tomeu Rigo
Carme Farnell
author_sort Tomeu Rigo
collection DOAJ
description Different giant and very large hail events have occurred in Catalonia (NE of the Iberian Peninsula) in the last three years, with stones ranging between 8 and more than 10 cm in diameter. These sizes have not occurred in this area in at least thirty years. This research analyzed all those events with at least one severe hail register (more than 2 cm diameter) in the region for 2013–2023. The present study considered large volumes of high reflectivity in weather radar 3D fields at high tropospheric levels (more than 10 km). The goal was to determine if high reflectivity cores (over 55 dBZ) occurred at those levels before or during the hail-fall. The main question was whether this radar signature could reveal the occurrence of very large or giant hail. The 55 dBZ volumes occurred and were maintained over 10 km between six and sixty minutes in a high percentage of large-hail cases. However, giant hail cases did not present the maximum duration of high reflectivity at high levels as was initially expected.
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institution Kabale University
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publishDate 2024-12-01
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series Atmosphere
spelling doaj-art-4d6ce0c76aed4f1d8b7f6801fbca840a2025-01-24T13:21:46ZengMDPI AGAtmosphere2073-44332024-12-011613310.3390/atmos16010033Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail EventsTomeu Rigo0Carme Farnell1Servei Meteorològic de Catalunya, 8017 Barcelona, SpainServei Meteorològic de Catalunya, 8017 Barcelona, SpainDifferent giant and very large hail events have occurred in Catalonia (NE of the Iberian Peninsula) in the last three years, with stones ranging between 8 and more than 10 cm in diameter. These sizes have not occurred in this area in at least thirty years. This research analyzed all those events with at least one severe hail register (more than 2 cm diameter) in the region for 2013–2023. The present study considered large volumes of high reflectivity in weather radar 3D fields at high tropospheric levels (more than 10 km). The goal was to determine if high reflectivity cores (over 55 dBZ) occurred at those levels before or during the hail-fall. The main question was whether this radar signature could reveal the occurrence of very large or giant hail. The 55 dBZ volumes occurred and were maintained over 10 km between six and sixty minutes in a high percentage of large-hail cases. However, giant hail cases did not present the maximum duration of high reflectivity at high levels as was initially expected.https://www.mdpi.com/2073-4433/16/1/33hailthunderstormradarhigh levelsreflectivity
spellingShingle Tomeu Rigo
Carme Farnell
Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
Atmosphere
hail
thunderstorm
radar
high levels
reflectivity
title Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
title_full Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
title_fullStr Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
title_full_unstemmed Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
title_short Detection of High Radar Reflectivity Volumes at High Tropospheric Levels in Large Hail Events
title_sort detection of high radar reflectivity volumes at high tropospheric levels in large hail events
topic hail
thunderstorm
radar
high levels
reflectivity
url https://www.mdpi.com/2073-4433/16/1/33
work_keys_str_mv AT tomeurigo detectionofhighradarreflectivityvolumesathightroposphericlevelsinlargehailevents
AT carmefarnell detectionofhighradarreflectivityvolumesathightroposphericlevelsinlargehailevents