气候变化领域集成服务门户(CCPortal): The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics

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DOI	10.1029/2019GL086933
	The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics
	Pal S.; Lee T.R.; Clark N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	In spring 2019, a catastrophic flood occurred along the Missouri and Mississippi River basins in the United States, which was characterized as the longest lasting flood since the Great Flood of 1927. The 2019 flooding resulted in extremely wet soils for 3–4 months over the Great Plains. Using rawinsonde-derived atmospheric boundary layer depths (BLDs) and in situ soil moisture (SM) data sets at 10 sites located meridionally across the two river-valleys, we investigated the SM controls on regional-scale BLDs during spring 2019. The impact of spring flooding on atmospheric boundary layer dynamics is reported via regression analyses between daily SM and BLDs yielding statistically significant negative r (p < 0.0012) with substantial spatial variability (r: −0.25 to −0.70). Results suggest (1) the strengthening of the negative SM-BLD relationship in the wake of extreme flooding and (2) positive SM anomalies of 0.05–0.12 m3 m−3 resulted in negative BLD anomalies (−100 to −400 m) compared to 8-year means, confirming the impact of perturbed land atmosphere feedback processes (LAFP). These results offer a test bed for developing better numerical models with advanced representations of LAFP. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Feedback; Floods; Oil well flooding; Radiosondes; Regression analysis; Rivers; Soil moisture; Atmospheric boundary layer depths; Boundary layer features; Catastrophic floods; Feedback process; Mississippi River Basin; Missouri rivers; rawinsonde; Spatial variability; Atmospheric boundary layer; boundary layer; catastrophic event; flood; flooding; soil moisture; spatial variation; Great Plains; Mississippi; Mississippi River; Missouri River; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170539
作者单位	Department of Geosciences, Atmospheric Science Division, Texas Tech University, Lubbock, TX, United States; Cooperative Institute for Mesoscale Meteorological Studies (CIMMS), Norman, OK, United States; NOAA Air Resources Laboratory Atmospheric Turbulence and Diffusion Division, Oak Ridge, TN, United States
推荐引用方式 GB/T 7714	Pal S.,Lee T.R.,Clark N.. The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics[J],2020,47(6).
APA	Pal S.,Lee T.R.,&Clark N..(2020).The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics.Geophysical Research Letters,47(6).
MLA	Pal S.,et al."The 2019 Mississippi and Missouri River Flooding and Its Impact on Atmospheric Boundary Layer Dynamics".Geophysical Research Letters 47.6(2020).