Show simple item record

dc.contributor.authorKirincich, Anthony R.  Concept link
dc.contributor.authorLentz, Steven J.  Concept link
dc.contributor.authorGerbi, Gregory P.  Concept link
dc.date.accessioned2010-10-19T15:20:21Z
dc.date.available2010-11-01T08:21:58Z
dc.date.issued2010-05
dc.identifier.citationJournal of Atmospheric and Oceanic Technology 27 (2010): 889-907en_US
dc.identifier.urihttps://hdl.handle.net/1912/3953
dc.descriptionAuthor Posting. © American Meteorological Society, 2010. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Atmospheric and Oceanic Technology 27 (2010): 889-907, doi:10.1175/2009JTECHO682.1.en_US
dc.description.abstractRecently, the velocity observations of acoustic Doppler current profilers (ADCPs) have been successfully used to estimate turbulent Reynolds stresses in estuaries and tidal channels. However, the presence of surface gravity waves can significantly bias stress estimates, limiting application of the technique in the coastal ocean. This work describes a new approach to estimate Reynolds stresses from ADCP velocities obtained in the presence of waves. The method fits an established semiempirical model of boundary layer turbulence to the measured turbulent cospectra at frequencies below those of surface gravity waves to estimate the stress. Applied to ADCP observations made in weakly stratified waters and variable significant wave heights, estimated near-bottom and near-surface stresses using this method compared well with independent estimates of the boundary stresses in contrast to previous methods. Additionally, the vertical structure of tidal stress estimated using the new approach matched that inferred from a linear momentum balance at stress levels below the estimated stress uncertainties. Because the method makes an estimate of the horizontal turbulent length scales present as part of the model fit, these results can also enable a direct correction for the mean bias errors resulting from instrument tilt, if these scales are long relative to the beam separation.en_US
dc.description.sponsorshipAK acknowledges support from the WHOI Coastal Ocean Institute, and SL acknowledges support from NSF Ocean Science Grant OCE-0548961.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/2009JTECHO682.1
dc.subjectGravity Wavesen_US
dc.subjectSurface layeren_US
dc.subjectAcoustic measurementsen_US
dc.titleCalculating Reynolds stresses from ADCP measurements in the presence of surface gravity waves using the cospectra-fit methoden_US
dc.typeArticleen_US
dc.identifier.doi10.1175/2009JTECHO682.1


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record