During January-August 1978, the global atmospheric angular momentum (M) exhibits distinct patterns of short term momentum interchange across latitudes. In the Northern Hemisphere winter-spring season, 30-50 day modulations of M are present in which momentum enhancements at mid-latitudes (20-30 deg) are closely matched by momentum depressions at high latitudes (50-60 deg). During the same interval there are no corresponding variations in M evident in the Southern Hemisphere. Conversely, during Southern Hemisphere fall-winter, similar anti-correlations in monthly scale momentum excursions are evident between mid and high latitudes. In the Northern Hemisphere, the winter-spring momentum signatures are detected throughout the atmosphere, from the lower troposphere to the stratosphere. During the Southern Hemisphere fall-winter, the modulation patterns are not evident at the higher altitudes. Structural details of the momentum signatures indicate that the coupling is sometimes effective on very short time scales, e.g., 1-2 days, or less. The evidence of distinct anti-correlation between large regions has interesting implications for studies of global atmospheric circulation, and also for studies of the excitation of variations in earth rotation in response to short term modulations of M.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Signatures of troposphere-stratosphere momentum coupling Implications for global atmospheric angular momentum and earth rotation budgets


    Contributors:
    Taylor, H. A. (author) / Mayr, H. G. (author) / Hartle, R. E. (author) / Kramer, L. (author) / Stirling, R. (author)

    Published in:

    Publication date :

    1984-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Stratosphere-troposphere exchange: An angular momentum perspective

    Egger, Joseph / Hoinka, Klaus-Peter | German Aerospace Center (DLR) | 2007

    Free access



    Atmospheric remote sensing: Earth’s surface, troposphere, stratosphere and mesosphere

    Burrows, J. P. / Eichmann, K. U. / Llewellyn, E. J. et al. | British Library Conference Proceedings | 2005