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DOI10.1175/JHM-D-19-0004.1
Climatology and Trends in Hourly Precipitation for the Southeast United States
Brown, Vincent M.1; Keim, Barry D.1; Black, Alan W.2
发表日期2019
ISSN1525-755X
EISSN1525-7541
卷号20期号:8页码:1737-1755
英文摘要

This research introduces a climatology of hourly precipitation characteristics, investigates trends in precipitation hours (PH) and hourly accumulation, and uses four different time series to determine if precipitation intensity is changing across the southeastern United States from 1960 to 2017. Results indicate hourly intensity significantly increased at 44% (22/50) of the stations, accompanied by an increase in average hourly accumulation at 40% of the sites analyzed (20/50). The average duration of precipitation events decreased at 82% (41/50) of the stations. However, the frequency of 90th percentile hourly events and events above station-specific average hourly totals did not show a broad increase similar to hourly intensity. It seems hourly events are becoming heavier on average, while the duration of the average precipitation event is decreasing. Geographically, heavy hourly events are more frequent along the Gulf Coast and decrease inland. PH significantly decreased across South Carolina, Georgia, and northern Florida, mainly due to significant decreases in winter (DJF) and spring (MAM). Decreases in PH during spring were contained to Georgia and South Carolina and were accompanied by a decrease in accumulation. Decreases in PH during winter were more widespread and did not exhibit a broad decrease in accumulation, suggesting winter precipitation across that portion of the region is becoming more intense.


WOS研究方向Meteorology & Atmospheric Sciences
来源期刊JOURNAL OF HYDROMETEOROLOGY
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/101282
作者单位1.Louisiana State Univ, Dept Geog & Anthropol, Baton Rouge, LA 70803 USA;
2.Southern Illinois Univ Edwardsville, Dept Geog, Edwardsville, IL USA
推荐引用方式
GB/T 7714
Brown, Vincent M.,Keim, Barry D.,Black, Alan W.. Climatology and Trends in Hourly Precipitation for the Southeast United States[J],2019,20(8):1737-1755.
APA Brown, Vincent M.,Keim, Barry D.,&Black, Alan W..(2019).Climatology and Trends in Hourly Precipitation for the Southeast United States.JOURNAL OF HYDROMETEOROLOGY,20(8),1737-1755.
MLA Brown, Vincent M.,et al."Climatology and Trends in Hourly Precipitation for the Southeast United States".JOURNAL OF HYDROMETEOROLOGY 20.8(2019):1737-1755.
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