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Observational Analysis of a Wind Gust Event during the Merging of a Bow Echo and Mini-Supercell in Southeastern China
- Source :
- Atmosphere, Vol 12, Iss 11, p 1511 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- The merging of a fast-moving bow echo with a convective cell of a hook-echo signature was studied by using polarimetric radar detections. Gusts with wind speeds near 35 m s−1 were recorded by the surface station, which caused significant damage. A convective cell with a mesovortex signature, which is hereafter referred to as a mini-supercell, was observed over the northeast of the bow echo before the convective merging. It was found that the mesovortex possessed cyclonic circulation and resembled a supercell-like feature. The merging of the bow echo and the mini-supercell strengthened the updraft near the apex of the bow echo. The enhanced updraft was also demonstrated by the appearance of a differential reflectivity (ZDR) column with a topmost height of 4 km above the melting layer (~4 km). The bow was separated into northern and southern sectors after merging with the mini-supercell, leading to the gusty wind over the surface of the south sector.
Details
- Language :
- English
- ISSN :
- 12111511 and 20734433
- Volume :
- 12
- Issue :
- 11
- Database :
- Directory of Open Access Journals
- Journal :
- Atmosphere
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.5d92c04cf87c4310b34f857b666ab8f9
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/atmos12111511