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Interannual Modulation of Northern Hemisphere Winter Storm Tracks by the QBO
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2018
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Source: Geophysical Research Letters 45(6): 2786-2794, 2018
Details:
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Journal Title:Geophysical Research Letters
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Personal Author:
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NOAA Program & Office:
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Description:Storm tracks, defined as the preferred regions of extratropical synoptic‐scale disturbances, have remarkable impacts on global weather and climate systems. Causes of interannual storm track variation have been investigated mostly from a troposphere perspective. As shown in this study, Northern Hemisphere winter storm tracks are significantly modulated by the tropical stratosphere through the quasi‐biennial oscillation (QBO). The North Pacific storm track shifts poleward during the easterly QBO winters associated with a dipole change in the eddy refraction and baroclinicity. The North Atlantic storm track varies vertically with a downward shrinking (upward expansion) in easterly (westerly) QBO winters associated with the change of the tropopause height. These results not only fill the knowledge gap of QBO‐storm track relationship but also suggest a potential route to improve the seasonal prediction of extratropical storm activities owing to the high predictability of the QBO.
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Keywords:
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Source:Geophysical Research Letters 45(6): 2786-2794, 2018
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DOI:
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Document Type:
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Funding:
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Place as Subject:
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Rights Information:Other
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Compliance:Submitted
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Main Document Checksum:urn:sha256:23a441ac0d0b0bbd613a6214b3d2420dc3d43c3ca8d33da9138b003b64d22293
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File Type:[PDF-1.06 MB]
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