| DOI: | 10.1175/JCLI-D-18-0559.1
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| Scopus记录号: | 2-s2.0-85061814227
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| 论文题名: | A radar-based climatology of mesoscale convective systems in the United States |
| 作者: | Haberlie A.M.; Ashley W.S.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2019
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| 卷: | 32, 期:5 | | 起始页码: | 1591
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| 结束页码: | 1606
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| 语种: | 英语
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| 英文关键词: | Climate variability
; Climatology
; Convective storms
; Mesoscale systems
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| Scopus关键词: | Aquifers
; Climatology
; Image segmentation
; Land use
; Landforms
; Rain
; Recharging (underground waters)
; Tracking radar
; Agricultural land use
; Climate variability
; Convective storms
; Meso-scale systems
; Mesoscale Convective System
; Radar reflectivities
; Seasonal and interannual variability
; Warm season rainfall
; Storms
; Zea mays
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| 英文摘要: | This research applies an automated mesoscale convective system (MCS) segmentation, classification, and tracking approach to composite radar reflectivity mosaic images that cover the contiguous United States (CONUS) and span a relatively long study period of 22 years (1996-2017). These data afford a novel assessment of the seasonal and interannual variability of MCSs. Additionally, hourly precipitation data from 16 of those years (2002-17) are used to systematically examine rainfall associated with radar-derived MCS events. The attributes and occurrence of MCSs that pass over portions of the CONUS east of the Continental Divide (ECONUS), as well as five author-defined subregions-North Plains, High Plains, Corn Belt, Northeast, and Mid-South-are also examined. The results illustrate two preferred regions for MCS activity in the ECONUS: 1) the Mid-South and Gulf Coast and 2) the Central Plains and Midwest. MCS occurrence and MCS rainfall display a marked seasonal cycle, with most of the regions experiencing these events primarily during the warm season (May-August). Additionally, MCS rainfall was responsible for over 50% of annual and seasonal rainfall for many locations in the ECONUS. Of particular importance, the majority of warm-season rainfall for regions with high agricultural land use (Corn Belt) and important aquifer recharge properties (High Plains) is attributable to MCSs. These results reaffirm that MCSs are a significant aspect of the ECONUS hydroclimate. © 2019, American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/117191
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Haberlie A.M.,Ashley W.S.. A radar-based climatology of mesoscale convective systems in the United States[J]. Journal of Climate,2019-01-01,32(5)
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