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Roll vortices in the planetary boundary layer: A review

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Abstract

Roll vortices may be loosely defined as quasi two-dimensional organized large eddies with their horizontal axis extending through the whole planetary boundary layer (PBL). Their indirect manifestation is most obvious in so-called cloud streets as can be seen in numerous satellite pictures. Although this phenomenon has been known for more than twenty years and has been treated in a review by one of us (R.A.Brown) in 1980, there has been a recent resurgence in interest and information. The interest in ocena/land-atmosphere interactions in the context of climate modeling has led to detailed observational and modeling efforts on this problem. The presence of rolls can have a large impact on flux modelling in the PBL. Hence, we shall review recent advances in our understanding of organized large eddies in the PBL and on their role in vertical transport of momentum, heat, moisture and chemical trace substances within the lowest part of the atmosphere.

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Authors and Affiliations

  1. Institut für Meteorologie und Klimatologie, Universität Hannover, 3000, Hannover 21, Germany

    D. Etling

  2. Dept. of Atmospheric Sciences, University of Washington, Seattle, USA

    R. A. Brown

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  2. R. A. Brown
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initiated by IAMAP/ICDM Working Group on the Atmospheric Boundary Layer and Air-Sea Interaction.

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Etling, D., Brown, R.A. Roll vortices in the planetary boundary layer: A review. Boundary-Layer Meteorol 65, 215–248 (1993). https://doi.org/10.1007/BF00705527

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  • DOI: https://doi.org/10.1007/BF00705527

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