DOI: 10.1002/2017JC013363
Scopus记录号: 2-s2.0-85040720176
论文题名: Surface Connectivity and Interocean Exchanges From Drifter-Based Transition Matrices
作者: McAdam R. ; van Sebille E.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 1 起始页码: 514
结束页码: 532
语种: 英语
英文关键词: interocean exchange
; surface transport
; transition matrix
; transport barriers
Scopus关键词: ageostrophic flow
; connectivity
; drifter
; geostrophic flow
; gyre
; mapping
; Markov chain
; matrix
; methodology
; oceanography
; parameter estimation
; probability
; sea surface
; sensitivity analysis
; timescale
; tracking
; transport process
; water exchange
; water mass
; western boundary current
; Agulhas Current
; Atlantic Ocean
; Atlantic Ocean (North)
; Indian Ocean
英文摘要: Global surface transport in the ocean can be represented by using the observed trajectories of drifters to calculate probability distribution functions. The oceanographic applications of the Markov Chain approach to modeling include tracking of floating debris and water masses, globally and on yearly-to-centennial time scales. Here we analyze the error inherent with mapping trajectories onto a grid and the consequences for ocean transport modeling and detection of accumulation structures. A sensitivity analysis of Markov Chain parameters is performed in an idealized Stommel gyre and western boundary current as well as with observed ocean drifters, complementing previous studies on widespread floating debris accumulation. Focusing on two key areas of interocean exchange—the Agulhas system and the North Atlantic intergyre transport barrier—we assess the capacity of the Markov Chain methodology to detect surface connectivity and dynamic transport barriers. Finally, we extend the methodology's functionality to separate the geostrophic and nongeostrophic contributions to interocean exchange in these key regions. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114853
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Grantham Institute-Climate Change and the Environment, Imperial College London, London, United Kingdom; Department of Physics, Imperial College London, London, United Kingdom; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
Recommended Citation:
McAdam R.,van Sebille E.. Surface Connectivity and Interocean Exchanges From Drifter-Based Transition Matrices[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(1)