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dc.contributor.authorCho, John Y. N.
dc.contributor.authorAnderson, Bruce E.
dc.contributor.authorBarrick, John D. W.
dc.contributor.authorThornhill, K. Lee
dc.date.accessioned2017-08-18T15:20:47Z
dc.date.available2017-08-18T15:20:47Z
dc.date.issued2001-12
dc.date.submitted2000-08
dc.identifier.issn2169-8996
dc.identifier.issn2169-897X
dc.identifier.urihttp://hdl.handle.net/1721.1/110979
dc.description.abstractWe analyze boundary layer velocity and temperature measurements acquired by aircraft at 22 Hz. The calculated longitudinal velocity third-order structure function yields approximate agreement with Kolmogorov's four-fifths law for the scale range ∼10–100 m with a downscale energy flux of ∼4×10⁻⁵ m² s⁻³. For scales greater than ∼10 km the sign is reversed, implying an inverse energy cascade with an estimated flux of ∼10⁻⁵ m⁻² s⁻³ associated with two-dimensional stratified turbulence. The mixed structure function of longitudinal velocity and squared temperature increment follows Yaglom's four-thirds law in the same scale range, yielding an estimated downscale temperature variance flux of ∼5×10⁻⁷ K² s⁻¹. Analysis of higher-order structure functions yields anomalous scaling for both velocity and temperature. The scaling also reveals second-order multifractal phase transitions for both velocity and temperature data. Above the transition moments, asymptotes varying with the number of realizations argue against the log-Poisson model. The log-Levy model is better able to explain the observed characteristics.en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Grant NAG1-2173)en_US
dc.language.isoen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1029/2001JD900079en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceChoen_US
dc.titleAircraft observations of boundary layer turbulence: Intermittency and the cascade of energy and passive scalar varianceen_US
dc.typeArticleen_US
dc.identifier.citationCho, John Y. N. et al. “Aircraft Observations of Boundary Layer Turbulence: Intermittency and the Cascade of Energy and Passive Scalar Variance.” Journal of Geophysical Research: Atmospheres 106, D23 (December 2001): 32469–32479 © 2001 American Geophysical Unionen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.approverCho, John Y. N.en_US
dc.contributor.mitauthorCho, John Y. N.
dc.relation.journalJournal of Geophysical Research: Atmospheresen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsCho, John Y. N.; Anderson, Bruce E.; Barrick, John D. W.; Thornhill, K. Leeen_US
dspace.embargo.termsNen_US
mit.licensePUBLISHER_POLICYen_US


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