The role of the turbulent stress divergence in the equatorial Pacific zonal momentum balance Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/tt44pp265

Copyrighted by American Geophysical Union.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • From a comprehensive set of upper ocean measurements made during a moderate El Niño in boreal spring 1987, we reassess the role of turbulence in transporting momentum vertically at the equator. An examination of the terms in the vertically integrated zonal momentum equations indicates that on short time scales the zonal pressure gradient is not balanced by the surface wind stress despite an apparent balance of these terms on longer (seasonal) time scales. The vertical redistribution of zonal momentum is complex. The strength of the wind determines both the magnitude and, likely, the mechanisms of momentum transport between the surface and the core of the undercurrent. During low wind conditions in April 1987 the turbulent stress divergence was significantly different in magnitude and vertical structure from that found during strong winds in November 1984. In November 1984 the turbulent stress divergence was much too large above 40 m to balance the residual term in the zonal momentum budget of Bryden and Brady (1985, 1989) and decayed exponentially with depth from the wind stress value at the surface. In April 1987 the turbulent stress divergence was smaller than that required by Bryden and Brady and decayed linearly from the surface wind stress. For a proper comparison with Bryden and Brady’s zonal momentum balance, it is necessary to determine the annual average turbulent stress divergence.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Hebert, D., J. Moum, C. Paulson, D. Caldwell, T. Chereskin, and M. McPhaden (1991), The Role of the Turbulent Stress Divergence in the Equatorial Pacific Zonal Momentum Balance, J. Geophys. Res., 96(C4), 7127-7136, doi:10.1029/91JC00271.
Series
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Digital Production(digitalproduc@gmail.com) on 2010-08-17T18:36:52Z (GMT) No. of bitstreams: 1 Hebert_et_al_JGR_1991.pdf: 1293085 bytes, checksum: 82d6997c73f067da062ef332690ec998 (MD5)
  • description.provenance : Submitted by David Moynihan (dmscanner@gmail.com) on 2010-08-16T19:09:01Z No. of bitstreams: 1 Hebert_et_al_JGR_1991.pdf: 1293085 bytes, checksum: 82d6997c73f067da062ef332690ec998 (MD5)
  • description.provenance : Made available in DSpace on 2010-08-17T18:36:52Z (GMT). No. of bitstreams: 1 Hebert_et_al_JGR_1991.pdf: 1293085 bytes, checksum: 82d6997c73f067da062ef332690ec998 (MD5) Previous issue date: 1991-04-15
ISSN
  • 0148-0227

Relationships

In Administrative Set:
Last modified: 07/24/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items