A case study of stably stratified airflow over the pennines using an instrumented glider

I. M. Stromberg, C. S. Mill, T. W. Choularton, M. W. Gallagher

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In this paper we present data gathered during a weak case of the Helm wind, an example of supercritical airflow, in the vicinity of Cross Fell in Northern England. Airborne measurements have been made using an instrumented glider with simultaneous ground-based measurements both on a hill summit and on the valley floor downwind of the hill. It is found that the major features of the airflow both near the surface and aloft, including the lee-wave activity are well reproduced by the airflow model of Carruthers and Choularton (1982). Secondary features including several higher modes of lee-waves and changes in the valley flow associated with nocturnal cooling were observed which could not be accounted for by the simple model.

    Original languageEnglish
    Pages (from-to)153-168
    Number of pages16
    JournalBoundary-Layer Meteorology
    Volume46
    Issue number1-2
    DOIs
    Publication statusPublished - 1 Jan 1989

    Keywords

    • Simple Model
    • High Mode
    • Valley Floor
    • Secondary Feature
    • Airborne Measurement

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