Publication:
Lagrangian flow in the California Undercurrent, an observation and model comparison

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Authors
Garfield, Newell
Maltrud, Mathew E.
Collins, Curtis A,
Rago, Thomas A.
Paquette, Robert G.
Subjects
Lagrangian flow
California Undercurrent
eddy field
Advisors
Date of Issue
2001
Date
Publisher
Elsevier
Language
Abstract
During the period 1992-1998, 38 isobaric RAFOS floats wre deployed to sample the subsurface flow of the California Undercurrent. The deployments, released over the California contintenal slope west of San Francisco, have sampled robust year-round poleward subsurface associated with the Undercurrent most seasons and the combined inshore current and Undercurrent in winter. Two other types of flow have been seen: a region of weak flow with little net displacement just west of the California Undercurrent, and an active westward propagating eddy field. This eddy field appears to be the primary mechanism for moving floats ffrom the Undercurrent into the ocean interior. The observations and statistics from the RAFOS floats are compared with Lagrangian estimates of particles tracked in a global high resolution ocean simulation in order to evaluate the fidelity of the model along an eastern boundary. The results show that the model reproduces the general character of the flow reasonably well, but underestimates both the mean and eddy energies by a substantial amount.
Type
Article
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Journal of Marine Systems, 29, (2001, pp. 201-220
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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