气候变化领域集成服务门户(CCPortal): Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?

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DOI	10.1029/2019JC015469
	Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?
	Androsov A.; Boebel O.; Schröter J.; Danilov S.; Macrander A.; Ivanciu I.
发表日期	2020
ISSN	21699275
卷号	125 期号:3
英文摘要	Ocean bottom pressure (OBP) variability serves as a proxy of ocean mass variability, the knowledge of which is needed in geophysical applications. The question of how well it can be modeled by the present general ocean circulation models on time scales in excess of 1 day is addressed here by comparing the simulated OBP variability with the observed one. To this end, a new multiyear data set is used, obtained with an array of bottom pressure gauges deployed deeply along a transect across the Southern Ocean. We present a brief description of OBP data and show large-scale correlations over several thousand kilometers at all time scales using daily and monthly averaged data. Annual and semiannual cycles are weak. Close to the Agulhas Retroflection, signals of up to 30 cm equivalent water height are detected. Further south, signals are mostly intermittent and noisy. It is shown that the models simulate consistent patterns of bottom pressure variability on monthly and longer scales except for areas with high mesoscale eddy activity, where high resolution is needed to capture the variability due to eddies. Furthermore, despite good agreement in the amplitude of variability, the in situ and simulated OBP show only modest correlation. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	atmospheric loading; daily and monthly scales; in situ ocean bottom pressure; modeling OBP variability; pressure inverted echo sounder PIES
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186959
作者单位	Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; Shirshov Institute of Oceanology, Moscow, Russian Federation; A. M. Obukhov Institute of Atmospheric Physics, Moscow, Russian Federation; Department of Mathematics and Logistics, Jacobs University, Bremen, Germany; Marine and Freshwater Research Institute, Reykjavik, Iceland; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
推荐引用方式 GB/T 7714	Androsov A.,Boebel O.,Schröter J.,et al. Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?[J],2020,125(3).
APA	Androsov A.,Boebel O.,Schröter J.,Danilov S.,Macrander A.,&Ivanciu I..(2020).Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?.Journal of Geophysical Research: Oceans,125(3).
MLA	Androsov A.,et al."Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?".Journal of Geophysical Research: Oceans 125.3(2020).