A Mechanism for Land–Atmosphere Feedback Involving Planetary Wave Structures

  • Randal D. Koster
    Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland
  • Yehui Chang
    Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, and Goddard Earth Sciences Technology and Research, Morgan State University, Baltimore, Maryland
  • Siegfried D. Schubert
    Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland

書誌事項

公開日
2014-12-10
DOI
  • 10.1175/jcli-d-14-00315.1
公開者
American Meteorological Society

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説明

<jats:title>Abstract</jats:title> <jats:p>While the ability of land surface conditions to influence the atmosphere has been demonstrated in various modeling and observational studies, the precise mechanisms by which land–atmosphere feedback occurs are still largely unknown: particularly the mechanisms that allow land moisture state in one region to affect atmospheric conditions in another. Such remote impacts are examined here in the context of atmospheric general circulation model (AGCM) simulations, leading to the identification of one potential mechanism: the phase locking and amplification of a planetary wave through the imposition of a spatial pattern of soil moisture at the land surface. This mechanism, shown here to be relevant in the AGCM, apparently also operates in nature, as suggested by supporting evidence found in reanalysis data.</jats:p>

収録刊行物

  • Journal of Climate

    Journal of Climate 27 (24), 9290-9301, 2014-12-10

    American Meteorological Society

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