气候变化领域集成服务门户(CCPortal): A hydrometeorological assessment of the historic 2019 flood of Nebraska, Iowa, and South Dakota

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DOI	10.1175/BAMS-D-19-0101.1
	A hydrometeorological assessment of the historic 2019 flood of Nebraska, Iowa, and South Dakota
	Flanagan P.X.; Mahmood R.; Umphlett N.A.; Haacker E.; Ray C.; Sorensen W.; Shulski M.; Stiles C.J.; Pearson D.; Fajman P.
发表日期	2020
ISSN	00030007
起始页码	E817
结束页码	E829
卷号	101 期号:6
英文摘要	During early 2019, a series of events set the stage for devastating floods in eastern Nebraska, western Iowa, and southeastern South Dakota. When the floodwaters hit, dams and levees failed, cutting off towns while destroying roads, bridges, and rail lines, further exacerbating the crisis. Lives were lost and thousands of cattle were stranded. Estimates indicate that the cost of the flooding has topped $3 billion as of August 2019, with this number expected to rise. After a warm and wet start to winter, eastern Nebraska, western Iowa, and southeastern South Dakota endured anomalously low temperatures and record-breaking snowfall. By March 2019, rivers were frozen, frost depths were 60–90 cm, and the water equivalent of the snowpack was 30–100 mm. With these conditions in place, a record-breaking surface cyclone rapidly developed in Colorado and moved eastward, producing heavy rain toward the east and blizzard conditions toward the west. In areas of eastern Nebraska, western Iowa, and southeastern South Dakota, rapid melting of the snowpack due to this rain-on-snow event quickly led to excessive runoff that overwhelmed rivers and streams. These conditions brought the region to a standstill. In this paper, we provide an analysis of the antecedent conditions in eastern Nebraska, western Iowa, and southeastern South Dakota and the development of the surface cyclone that triggered the historic flooding, along with a look into the forecast and communication of flood impacts prior to the flood. The study used multiple datasets, including in situ observations and reanalysis data. Understanding the events that led to the flooding could aid in future forecasting efforts. © 2020 American Meteorological Society.
语种	英语
scopus关键词	Rain; Rivers; Snow; Storms; In-situ observations; Low temperatures; Multiple data sets; Rain-on-snow; Rivers and streams; South dakotas; Surface cyclone; Water equivalent; Floods
来源期刊	Bulletin of the American Meteorological Society
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177872
作者单位	High Plains Regional Climate Center, School of Natural Resources, University of Nebraska–Lincoln, Lincoln, NE, United States; Department of Earth and Atmospheric Sciences, University of Nebraska–Lincoln, Lincoln, NE, United States; Nebraska Water Center, University of Nebraska–Lincoln, Lincoln, NE, United States; School of Natural Resources, University of Nebraska–Lincoln, Lincoln, NE, United States; National Weather Service, Omaha, NE, United States
推荐引用方式 GB/T 7714	Flanagan P.X.,Mahmood R.,Umphlett N.A.,et al. A hydrometeorological assessment of the historic 2019 flood of Nebraska, Iowa, and South Dakota[J],2020,101(6).
APA	Flanagan P.X..,Mahmood R..,Umphlett N.A..,Haacker E..,Ray C..,...&Fajman P..(2020).A hydrometeorological assessment of the historic 2019 flood of Nebraska, Iowa, and South Dakota.Bulletin of the American Meteorological Society,101(6).
MLA	Flanagan P.X.,et al."A hydrometeorological assessment of the historic 2019 flood of Nebraska, Iowa, and South Dakota".Bulletin of the American Meteorological Society 101.6(2020).