Brian Powell
University of Hawaii
52 Papers
315 Citations
Brian Powell is an academic researcher from University of Hawaii. The author has contributed to research in topics: Data assimilation & Regional Ocean Modeling System. The author has an hindex of 19, co-authored 47 publications. Previous affiliations of Brian Powell include University of California, Santa Cruz & University of Hawaii at Manoa.
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Papers
The Regional Ocean Modeling System (ROMS) 4-dimensional variational data assimilation systems Part I - System overview and formulation
Andrew M. Moore,Hernan G. Arango,Gregoire Broquet,Brian Powell,Anthony T. Weaver,Javier Zavala-Garay +5 more
TL;DR: Several powerful 4D-Var diagnostic tools are discussed, namely computation of posterior errors, eigenvector analysis of the posterior error covariance, observation impact, and observation sensitivity.
319
The Regional Ocean Modeling System (ROMS) 4-dimensional variational data assimilation systems: Part II – Performance and application to the California Current System
Andrew M. Moore,Hernan G. Arango,Gregoire Broquet,Christopher A. Edwards,Milena Veneziani,Brian Powell,D. G. Foley,James D. Doyle,Daniel P. Costa,Patrick W. Robinson +9 more
TL;DR: A comparison of three approaches to 4D-Var, namely: the primal formulation of the incremental strong constraint approach; the dual formulation “physical-space statistical analysis system”; and the dual formulations indirect representer approach are presented.
192
4DVAR data assimilation in the Intra-Americas Sea with the Regional Ocean Modeling System (ROMS)
Brian Powell,Hernan G. Arango,Andrew M. Moore,E. Di Lorenzo,Ralph F. Milliff,D. G. Foley,D. G. Foley +6 more
TL;DR: In this article, the authors present the background, development, and preparation of a state-of-the-art 4D variational (4DVAR) data assimilation system in the Regional Ocean Modeling System (ROMS) with an application in the Intra-Americas Sea (IAS).
117
Application of 4D-Variational data assimilation to the California Current System
Gregoire Broquet,Christopher A. Edwards,Andrew M. Moore,Brian Powell,Milena Veneziani,James D. Doyle +5 more
TL;DR: In this article, the Incremental Strong Constraint 4D-Variational (IS4DVAR) data assimilation system of the Regional Ocean Model System (ROMS) is used to study the controllability of a realistic, high resolution configuration of the California Current System.
98
Effects of Remote Generation Sites on Model Estimates ofM2Internal Tides in the Philippine Sea
TL;DR: In this paper, the impact of remotely generated internal tides on model estimates of barotropic to baroclinic tidal conversion for two generation sites bounding the Philippine Sea: the Luzon Strait and the Mariana Island Arc.
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