DOI: 10.1002/joc.5805
Scopus记录号: 2-s2.0-85052822134
论文题名: A radar-based study of severe hail outbreaks over the contiguous United States for 2000–2011
作者: Schlie E.E.-J. ; Wuebbles D. ; Stevens S. ; Trapp R. ; Jewett B.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 1 起始页码: 278
结束页码: 291
语种: 英语
英文关键词: climatology
; hail
; hail proxy
; MESH
; radar
; severe hail
; severe hail outbreaks
Scopus关键词: Climatology
; Mesh generation
; Meteorological radar
; Quality control
; Radar
; Control measures
; High resolution
; Linear relationships
; Major axis lengths
; MESH
; Next generation weather radars
; Radar based studies
; severe hail outbreaks
; Precipitation (meteorology)
; algorithm
; climate change
; climatology
; hail
; NEXRAD
; quality control
; severe weather
; United States
英文摘要: A radar-based hail climatology, with broad coverage and high resolution, is possible using the Next-Generation Weather Radar (NEXRAD) Reanalysis through application of the multiradar multisensor (MRMS) algorithm and maximum expected size of hail (MESH). Using 12 years of MESH data, we define a “severe hail outbreak day” and analyse the characteristics and frequency of severe hail and severe hail outbreaks, including an analysis of hail swaths. Thresholds are set to signify severe hail in terms of MESH, and automated quality control measures are implemented. When comparing severe hail days in MESH to reports, we find a linear relationship between MESH and reports. Several case studies are also included to highlight the utility of MESH when studying outbreaks of severe hail, specifically regarding outbreak events that occur in low-population areas. With the caveat that this is a relatively short-time period, we find that severe hail days decrease while severe hail outbreak days increase over the period 2000–2011. The increase in outbreaks is happening primarily in the month of June, where the number of severe hail days stays fairly constant over the 12 years. This suggests that the increase in outbreaks is mainly taking place on days when severe hail already occurs. When examining hail swath characteristics, we find that there are a greater number of hail swaths (with a major-axis-length [MAL] of at least 15 km) on outbreak versus nonoutbreak days. Additionally, hail swaths with the largest MALs occur on outbreak days. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116671
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Cooperative Institute for Climate and Satellites-North Carolina, Asheville, NC, United States
Recommended Citation:
Schlie E.E.-J.,Wuebbles D.,Stevens S.,et al. A radar-based study of severe hail outbreaks over the contiguous United States for 2000–2011[J]. International Journal of Climatology,2019-01-01,39(1)