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Investigation of non-equilibrium turbulence decay in the atmospheric boundary layer using Doppler lidar measurements

cris.lastimport.scopus2025-10-23T06:56:26Z
dc.abstract.enThis work concerns analysis of turbulence in the atmospheric boundary layer (ABL) shortly before and after sunset. Based on a large set of Doppler lidar measurements at rural and urban sites, we analyze frequency spectra of vertical wind at different heights and show that they increasingly deviate from Kolmogorov's -5/3 prediction in the measured low-wavenumber part of the inertial range. We find that before sunset, the integral length scales tend to decrease with time. These findings contrast with a classical model of equilibrium decay of isotropic turbulence, which predicts that the scaling exponent should remain constant and equal to-5/3 and the integral length scale should increase in time. We explain the observations using recent theories of non-equilibrium turbulence. The presence of non-equilibrium suggests that classical parametrization schemes fail to predict turbulence statistics shortly before sunset. By comparing the classical and the non-equilibrium models, we conclude that the former may underestimate the dissipation rate of turbulence kinetic energy in the initial stages of decay.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliation.instituteKatedra Ekologii i Ochrony Środowiska
dc.contributor.authorKarasewicz, Maciej
dc.contributor.authorWacławczyk, Marta
dc.contributor.authorOrtiz-Amezcua, Pablo
dc.contributor.authorJanicka, Łucja
dc.contributor.authorPoczta, Patryk
dc.contributor.authorKassar Borges, Camilla
dc.contributor.authorStachlewska, Iwona S.
dc.date.access2025-04-24
dc.date.accessioned2025-04-24T10:21:24Z
dc.date.available2025-04-24T10:21:24Z
dc.date.copyright2024-11-29
dc.date.issued2024
dc.description.abstract<jats:p>Abstract. This work concerns analysis of turbulence in the atmospheric boundary layer (ABL) shortly before and after sunset. Based on a large set of Doppler lidar measurements at rural and urban sites, we analyze frequency spectra of vertical wind at different heights and show that they increasingly deviate from Kolmogorov's -5/3 prediction in the measured low-wavenumber part of the inertial range. We find that before sunset, the integral length scales tend to decrease with time. These findings contrast with a classical model of equilibrium decay of isotropic turbulence, which predicts that the scaling exponent should remain constant and equal to -5/3 and the integral length scale should increase in time. We explain the observations using recent theories of non-equilibrium turbulence. The presence of non-equilibrium suggests that classical parametrization schemes fail to predict turbulence statistics shortly before sunset. By comparing the classical and the non-equilibrium models, we conclude that the former may underestimate the dissipation rate of turbulence kinetic energy in the initial stages of decay. </jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if5,1
dc.description.number23
dc.description.points140
dc.description.versionfinal_published
dc.description.volume24
dc.identifier.doi10.5194/acp-24-13231-2024
dc.identifier.eissn1680-7324
dc.identifier.issn1680-7316
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/2700
dc.identifier.weblinkhttps://acp.copernicus.org/articles/24/13231/2024/
dc.languageen
dc.pbn.affiliationenvironmental engineering, mining and energy
dc.relation.ispartofAtmospheric Chemistry and Physics
dc.relation.pages13231-13251
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.titleInvestigation of non-equilibrium turbulence decay in the atmospheric boundary layer using Doppler lidar measurements
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue23
oaire.citation.volume24